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Olaf Gefeller

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Andreas Mayr; Anna Pirkl; Hans-Ulrich Prokosch; Antje Fröhlich; Olaf Gefeller; Martina de Zwaan
Web-based data collection yielded an additional response bias--but had no direct effect on outcome scales.
Wolfgang Uter; Olaf Gefeller; Johannes Geier; Axel Schnuch
Methylchloroisothiazolinone/methylisothiazolinone contact sensitization: diverging trends in subgroups of IVDK patients in a period of 19 years.
Kai-Uwe Eckardt; Frank Eitner; Arif B Ekici; Jürgen Floege; Olaf Gefeller; Hermann Haller; Robert Hilge; Karl F Hilgers; Jan T Kielstein; Anna Köttgen; Vera Krane; Florian Kronenberg; Peter Oefner; Hans-Ulrich Prokosch; André Reis; Elke Schaeffner; Matthias Schmid; Ulla T Schultheiss; Susanne A Seuchter; Thomas Sitter; Claudia Sommerer; Seema Baid-Agrawal; Barbara Bärthlein; Andreas Beck; Martin Busch; Gerd Walz; Christoph Wanner; Gunter Wolf; Martin Zeier; Stephanie Titze
The German Chronic Kidney Disease (GCKD) study: design and methods.

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All Publications

2012: Andreas Mayr; Anna Pirkl; Hans-Ulrich Prokosch; Antje Fröhlich; Olaf Gefeller; Martina de Zwaan
Web-based data collection yielded an additional response bias--but had no direct effect on outcome scales.
Journal of clinical epidemiology 2012;65(9):970-7.
2012: Wolfgang Uter; Olaf Gefeller; Johannes Geier; Axel Schnuch
Methylchloroisothiazolinone/methylisothiazolinone contact sensitization: diverging trends in subgroups of IVDK patients in a period of 19 years.
Contact dermatitis 2012;67(3):125-9.
2012: Kai-Uwe Eckardt; Frank Eitner; Arif B Ekici; Jürgen Floege; Olaf Gefeller; Hermann Haller; Robert Hilge; Karl F Hilgers; Jan T Kielstein; Anna Köttgen; Vera Krane; Florian Kronenberg; Peter Oefner; Hans-Ulrich Prokosch; André Reis; Elke Schaeffner; Matthias Schmid; Ulla T Schultheiss; Susanne A Seuchter; Thomas Sitter; Claudia Sommerer; Seema Baid-Agrawal; Barbara Bärthlein; Andreas Beck; Martin Busch; Gerd Walz; Christoph Wanner; Gunter Wolf; Martin Zeier; Stephanie Titze
The German Chronic Kidney Disease (GCKD) study: design and methods.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2012;27(4):1454-60.
2012: Martina de Zwaan; Hans-Christoph Friederich; Olaf Gefeller; Stephan Herpertz; Tony Lam; Andreas Mayr; Carmen Schade-Brittinger; Frauke Schmidt; Brunna Tuschen-Caffier; Stephan Zipfel; Anja Hilbert
INTERBED: internet-based guided self-help for overweight and obese patients with full or subsyndromal binge eating disorder. A multicenter randomized controlled trial.
Trials 2012;13():220.
2012: Anne Kästner; Kamilla W Miskowiak; Klaus-Armin Nave; Anna Ramin; Dan Rujescu; Derya Sargin; Judith Schwitulla; Swetlana Sperling; Beata Stepniak; Ahmed El-Kordi; Heidi Friedrichs; Olaf Gefeller; Ina Giegling; Sabrina Grube; Kathrin Hannke; Ralf Heinrich; Martin Begemann; Hannelore Ehrenreich
Common variants of the genes encoding erythropoietin and its receptor modulate cognitive performance in schizophrenia.
Molecular medicine (Cambridge, Mass.) 2012;18():1029-40.
2012: M Schmid; Olaf Gefeller; Torsten Hothorn
Boosting into a new terminological era.
Methods of information in medicine 2012;51(2):150-1.
2011: Katja Ribbe; Judith Schwitulla; Inge Sillaber; Swetlana Sperling; Heidi Friedrichs; Olaf Gefeller; Sabrina Grube; Olaf Jahn; Henning Krampe; Sergi Papiol; Verena Ackermann; Martin Begemann; Hannelore Ehrenreich
Prediction of the risk of comorbid alcoholism in schizophrenia by interaction of common genetic variants in the corticotropin-releasing factor system.
Archives of general psychiatry 2011;68(12):1247-56.
2011: Martina de Zwaan; Beate Ditzen; Janna Enderle; Olaf Gefeller; James E Mitchell; Barbara Mühlhans; Sebastian Wagner; Astrid Müller
Anxiety and depression in bariatric surgery patients: a prospective, follow-up study using structured clinical interviews.
Journal of affective disorders 2011;133(1-2):61-8.
2011: Jiang Li; Annette Pfahlberg; Wolfgang Uter; Olaf Gefeller
Parental perspective on sun protection for young children in Bavaria.
Photodermatology, photoimmunology & photomedicine 2011;27(4):196-202.
2011: Matthias Schmid; Thomas Hielscher; Thomas Augustin; Olaf Gefeller
A robust alternative to the schemper-henderson estimator of prediction error.
Biometrics 2011;67(2):524-35.
2011: Annika M Hohnheiser; Olaf Gefeller; Jonas Göhl; Gerold Schuler; Werner Hohenberger; Susanne Merkel
Malignant melanoma of the skin: long-term follow-up and time to first recurrence.
World journal of surgery 2011;35(3):580-9.
2010: Astrid Mueller; James E Mitchell; Ross D Crosby; Olaf Gefeller; Ronald J Faber; Alexandra Martin; Stefan Bleich; Heide Glaesmer; Cornelia Exner; Martina de Zwaan
Estimated prevalence of compulsive buying in Germany and its association with sociodemographic characteristics and depressive symptoms.
Psychiatry research 2010;180(2-3):137-42.
2010: Wolfgang Uter; Janice Hegewald; Annette Pfahlberg; Holger Lessmann; Axel Schnuch; Olaf Gefeller
Contact allergy to thiurams: multifactorial analysis of clinical surveillance data collected by the IVDK network.
International archives of occupational and environmental health 2010;83(6):675-81.
2009: Karla Geiss; Martin Meyer; Martin Radespiel-Tröger; Olaf Gefeller
SURVSOFT-Software for nonparametric survival analysis.
Computer methods and programs in biomedicine 2009;96(1):63-71.
2009: Wolfgang Uter; Peter J Frosch; Detlef Becker; Axel Schnuch; Annette Pfahlberg; Olaf Gefeller
Are we biased when reading a doubtful patch test reaction to a 'clear-cut' allergen such as the thiuram mix?
Contact dermatitis 2009;60(4):234-5.
2009: C Rämsch; Annette Pfahlberg; Olaf Gefeller
Point and interval estimation of partial attributable risks from case-control data using the R-package 'pARccs'.
Computer methods and programs in biomedicine 2009;94(1):88-95.
2009: Lothar Häberle; Annette Pfahlberg; Olaf Gefeller
Assessment of multiple ordinal endpoints.
Biometrical journal. Biometrische Zeitschrift 2009;51(1):217-26.
2009: Olaf Gefeller
Invited commentary: Recall bias in melanoma -- much ado about almost nothing?
American journal of epidemiology 2009;169(3):267-70; discussion 271-2.
2008: Martina de Zwaan; Anja Hilbert; Stephan Herpertz; Stephan Zipfel; Manfred Beutel; Olaf Gefeller; Barbara Muehlhans
Weight loss maintenance in a population-based sample of German adults.
Obesity (Silver Spring, Md.) 2008;16(11):2535-40.
2008: Christian Plank; Veronica Kalb; Bernward Hinkes; Friedhelm Hildebrandt; Olaf Gefeller; Wolfgang Rascher
Cyclosporin A is superior to cyclophosphamide in children with steroid-resistant nephrotic syndrome-a randomized controlled multicentre trial by the Arbeitsgemeinschaft für Pädiatrische Nephrologie.
Pediatric nephrology (Berlin, Germany) 2008;23(9):1483-93.
2008: Janice Hegewald; Wolfgang Uter; Birger Kränke; Axel Schnuch; Annette Pfahlberg; Olaf Gefeller
Meteorological conditions and the diagnosis of occupationally related contact sensitizations.
Scandinavian journal of work, environment & health 2008;34(4):316-21.
2008: Annette Pfahlberg; Olaf Gefeller
Errors in assessing risk factors for melanoma: lack of reproducibility is the minor problem.
Melanoma research 2008;18(4):300-1.
2008: Wolfgang Uter; Olaf Gefeller; Johannes Geier; Axel Schnuch
Changes of the patch test population (MOAHLFA index) in long-term participants of the Information Network of Departments of Dermatology, 1999-2006.
Contact dermatitis 2008;59(1):56-7.
2008: Wolfgang Uter; Janice Hegewald; B Kränke; Axel Schnuch; Olaf Gefeller; Annette Pfahlberg
The impact of meteorological conditions on patch test results with 12 standard series allergens (fragrances, biocides, topical ingredients).
The British journal of dermatology 2008;158(4):734-9.
2008: Janice Hegewald; Wolfgang Uter; Birger Kranke; Axel Schnuch; Olaf Gefeller; Annette Pfahlberg
Patch test results with metals and meteorological conditions.
International archives of allergy and immunology 2008;147(3):235-40.
2008: R Weibbach; A Pfahlberg; Olaf Gefeller
Double-smoothing in kernel hazard rate estimation.
Methods of information in medicine 2008;47(2):167-73.
2008: K T Eckel; Annette Pfahlberg; Olaf Gefeller; Torsten Hothorn
Flexible modeling of malignant melanoma survival.
Methods of information in medicine 2008;47(1):47-55.
2007: Wolfgang Uter; Detlef Becker; Axel Schnuch; Olaf Gefeller; Peter J Frosch
The validity of rating patch test reactions based on digital images.
Contact dermatitis 2007;57(5):337-42.
2007: Frank A Flachskampf; Joachim Gallasch; Olaf Gefeller; Junxue Gan; Juntong Mao; Annette Pfahlberg; Alois Wortmann; Lutz Klinghammer; Wolfgang Pflederer; Werner G Daniel
Randomized trial of acupuncture to lower blood pressure.
Circulation 2007;115(24):3121-9.
2007: Olaf Gefeller; Jasmin Tarantino; Peter Lederer; Wolfgang Uter; Annette Pfahlberg
The relation between patterns of vacation sun exposure and the development of acquired melanocytic nevi in German children 6-7 years of age.
American journal of epidemiology 2007;165(10):1162-9.
2007: Christina Rabe; Andrea Lehnert-Batar; Olaf Gefeller
Generalized approaches to partitioning the attributable risk of interacting risk factors can remedy existing pitfalls.
Journal of clinical epidemiology 2007;60(5):461-8.
2006: J Geier; Wolfgang Uter; A Schnuch; J Brasch; Olaf Gefeller
Both mercaptobenzothiazole and mercapto mix should be part of the standard series.
Contact dermatitis 2006;55(5):314-6; author reply 316.
2006: Martin Radespiel-Tröger; Torsten Hothorn; Annette Pfahlberg; Olaf Gefeller
Re: "Applying recursive partitioning to a prospective study of factors associated with adherence to mammography screening guidelines".
American journal of epidemiology 2006;164(4):400-1; author reply 401-2.
2006: Andrea Lehnert-Batar; Annette Pfahlberg; Olaf Gefeller
Comparison of confidence intervals for adjusted attributable risk estimates under multinomial sampling.
Biometrical journal. Biometrische Zeitschrift 2006;48(5):805-19.
2006: Bernd Rossbach; Mark Buchta; György A Csanády; Johannes G Filser; Wolfgang Hilla; Klaus Windorfer; Joachim Stork; Wolfgang Zschiesche; Olaf Gefeller; Annette Pfahlberg; Karl Heinz Schaller; Ellen Egerer; Luis Carlos Escobar Pinzón; Stephan Letzel
Biological monitoring of welders exposed to aluminium.
Toxicology letters 2006;162(2-3):239-45.
2006: Hermann Stefan; Ying Wang-Tilz; Elisabeth Pauli; Stephanie Dennhöfer; Alexandra Genow; Frank Kerling; Bogdan Lorber; Britta Fraunberger; Petra Halboni; Corinna Koebnick; Olaf Gefeller; Christian Tilz
Onset of action of levetiracetam: a RCT trial using therapeutic intensive seizure analysis (TISA).
Epilepsia 2006;47(3):516-22.
2006: Martin Radespiel-Tröger; Olaf Gefeller; Thomas Rabenstein; Torsten Hothorn
Association between split selection instability and predictive error in survival trees.
Methods of information in medicine 2006;45(5):548-56.
2006: Christina Rabe; Olaf Gefeller
The attributable risk in a multifactorial situation--evaluation of different methods of partitioning.
Methods of information in medicine 2006;45(4):404-8.
2005: Axel Schnuch; Olaf Gefeller; Wolfgang Uter
[A common and insidious side-effect: allergic contact dermatitis caused by bufexamac used in the treatment of dermatitis. Results from the Information Network of Departments of Dermatology (IDVK)].
Deutsche medizinische Wochenschrift (1946) 2005;130(50):2881-6.
2005: Eberhard Kuon; Klaus Empen; Daniel M Robinson; A Pfahlberg; Olaf Gefeller; Johannes B Dahm
Efficiency of a minicourse in radiation reducing techniques: a pilot initiative to encourage less irradiating cardiological interventional techniques (ELICIT).
Heart (British Cardiac Society) 2005;91(9):1221-2.
2005: C Vogel; H Brenner; A Pfahlberg; Olaf Gefeller
The effects of joint misclassification of exposure and disease on the attributable risk.
Statistics in medicine 2005;24(12):1881-96.
2005: Til Stuermer; Olaf Gefeller; H Brenner
A computer program to estimate power and relative efficiency of flexibly matched case-control studies.
Methods of information in medicine 2005;44(5):693-6.
2005: Wolfgang Uter; Annette Pfahlberg; Olaf Gefeller
Nevus density and atopic eczema.
Archives of dermatology 2005;141(1):101-2; author reply 102.
2005: Klaus F Kölmel; John M Grange; Bernd Krone; Giuseppe Mastrangelo; C R Rossi; Beate M Henz; Claus Seebacher; Ivan N Botev; Marianne Niin; Daniel Lambert; Raphael Shafir; Eva-Maria Kokoschka; Ulrich R Kleeberg; Olaf Gefeller; Annette Pfahlberg
Prior immunisation of patients with malignant melanoma with vaccinia or BCG is associated with better survival. An European Organization for Research and Treatment of Cancer cohort study on 542 patients.
European journal of cancer (Oxford, England : 1990) 2005;41(1):118-25.
2004: Hermann Brenner; Volker Arndt; Olaf Gefeller; Timo Hakulinen
An alternative approach to age adjustment of cancer survival rates.
European journal of cancer (Oxford, England : 1990) 2004;40(15):2317-22.
2004: Wolfgang Uter; Axel Schnuch; Olaf Gefeller
Guidelines for the descriptive presentation and statistical analysis of contact allergy data.
Contact dermatitis 2004;51(2):47-56.
2004: Wolfgang Uter; Annette Pfahlberg; Olaf Gefeller
Reproducibility of patch tests.
Contact dermatitis 2004;51(1):43-4; author reply 45-46.
2004: Til Stuermer; Olaf Gefeller; H Brenner
A computer program to estimate power and relative efficiency to assess multiplicative interactions in flexibly matched case-control studies.
Computer methods and programs in biomedicine 2004;74(3):261-5.
2004: Mark Berneburg; Heidi Plettenberg; Kathrin Medve-König; Annette Pfahlberg; H Gers-Barlag; Olaf Gefeller; Jean Krutmann
Induction of the photoaging-associated mitochondrial common deletion in vivo in normal human skin.
The Journal of investigative dermatology 2004;122(5):1277-83.
2004: Annette Pfahlberg; Wolfgang Uter; C Kraus; W R Wienecke; U Reulbach; Klaus F Kölmel; Olaf Gefeller
Monitoring of nevus density in children as a method to detect shifts in melanoma risk in the population.
Preventive medicine 2004;38(4):382-7.
2004: Annette Pfahlberg; Wolfgang Uter; Olaf Gefeller
Population attributable fraction estimates of familial risk in cutaneous melanoma.
The Journal of investigative dermatology 2004;122(3):853-4.
2004: Volker Arndt; M Talbäck; Olaf Gefeller; T Hakulinen; H Brenner
Modification of SAS macros for a more efficient analysis of relative survival rates.
European journal of cancer (Oxford, England : 1990) 2004;40(5):778-9.
2004: Thomas Kraus; Annette Pfahlberg; Petra Zöbelein; Olaf Gefeller; Hans Jürgen Raithel
Lung function among workers in the soft tissue paper-producing industry.
Chest 2004;125(2):731-6.
2004: Hermann Brenner; Olaf Gefeller; Timo Hakulinen
Period analysis for 'up-to-date' cancer survival data: theory, empirical evaluation, computational realisation and applications.
European journal of cancer (Oxford, England : 1990) 2004;40(3):326-35.
2004: Wolfgang Uter; Annette Pfahlberg; B Kalina; Klaus F Kölmel; Olaf Gefeller
Inter-relation between variables determining constitutional UV sensitivity in Caucasian children.
Photodermatology, photoimmunology & photomedicine 2004;20(1):9-13.
2004: Wolfgang Uter; Reinhold Rühl; Annette Pfahlberg; Johannes Geier; Axel Schnuch; Olaf Gefeller
Contact allergy in construction workers: results of a multifactorial analysis.
The Annals of occupational hygiene 2004;48(1):21-7.
2003: Eberhard Kuon; M Schmitt; C Dorn; A Pfahlberg; Olaf Gefeller; Johannes B Dahm
Predialing the number of cinegraphic frames enables an effective patient dose due to coronary angiography of 0.8 mSv.
RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin 2003;175(12):1706-10.
2003: Eberhard Kuon; M Günther; Olaf Gefeller; Johannes B Dahm
Standardization of occupational dose to patient DAP enables reliable assessment of radiation-protection devices in invasive cardiology.
RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin 2003;175(11):1545-50.
2003: Bernd Krone; Klaus F Kölmel; John M Grange; Giuseppe Mastrangelo; Beate M Henz; Ivan N Botev; Marianne Niin; Claus Seebacher; Daniel Lambert; Raphael Shafir; Eva-Maria Kokoschka; Ulrich R Kleeberg; Olaf Gefeller; Annette Pfahlberg
Impact of vaccinations and infectious diseases on the risk of melanoma--evaluation of an EORTC case-control study.
European journal of cancer (Oxford, England : 1990) 2003;39(16):2372-8.
2003: Mark Buchta; Ernst Kiesswetter; A Otto; Karl Heinz Schaller; Andreas Seeber; Wolfgang Hilla; Klaus Windorfer; Joachim Stork; A Kuhlmann; Olaf Gefeller; Stephan Letzel
Longitudinal study examining the neurotoxicity of occupational exposure to aluminium-containing welding fumes.
International archives of occupational and environmental health 2003;76(7):539-48.
2003: Wolfgang Uter; Janice Hegewald; Annette Pfahlberg; Claudia Pirker; Peter J Frosch; Olaf Gefeller
The association between ambient air conditions (temperature and absolute humidity), irritant sodium lauryl sulfate patch test reactions and patch test reactivity to standard allergens.
Contact dermatitis 2003;49(2):97-102.
2003: Frederick Wolfe; Kaleb Michaud; Olaf Gefeller; Hyon K Choi
Predicting mortality in patients with rheumatoid arthritis.
Arthritis and rheumatism 2003;48(6):1530-42.
2003: Eberhard Kuon; Johannes B Dahm; M Schmitt; C Glaser; Olaf Gefeller; A Pfahlberg
Short communication: time of day influences patient radiation exposure from percutaneous cardiac interventions.
The British journal of radiology 2003;76(903):189-91.
2003: Andrea Peters; berthold lausen; Georg Michelson; Olaf Gefeller
Diagnosis of glaucoma by indirect classifiers.
Methods of information in medicine 2003;42(1):99-103.
2003: Wolfgang Uter; Annette Pfahlberg; Olaf Gefeller; Johannes Geier; Axel Schnuch
Risk factors for contact allergy to nickel - results of a multifactorial analysis.
Contact dermatitis 2003;48(1):33-8.
2002: Thomas Kraus; Annette Pfahlberg; Olaf Gefeller; H J Raithel
Respiratory symptoms and diseases among workers in the soft tissue producing industry.
Occupational and environmental medicine 2002;59(12):830-5.
2002: Annette Pfahlberg; Ivan N Botev; Klaus F Kölmel; Olaf Gefeller
Vaccination and melanoma risk.
International journal of cancer. Journal international du cancer 2002;102(1):96-7.
2002: Ute Latza; Annette Pfahlberg; Olaf Gefeller
Impact of repetitive manual materials handling and psychosocial work factors on the future prevalence of chronic low-back pain among construction workers.
Scandinavian journal of work, environment & health 2002;28(5):314-23.
2002: Annette Pfahlberg; Klaus F Kölmel; John M Grange; Giuseppe Mastrangelo; Bernd Krone; Ivan N Botev; Marianne Niin; Claus Seebacher; Daniel Lambert; Raphael Shafir; Daniela Schneider; Eva-Maria Kokoschka; Ulrich R Kleeberg; Wolfgang Uter; Olaf Gefeller
Inverse association between melanoma and previous vaccinations against tuberculosis and smallpox: results of the FEBIM study.
The Journal of investigative dermatology 2002;119(3):570-5.
2002: Hermann Brenner; Timo Hakulinen; Olaf Gefeller
Computational realization of period analysis for monitoring cancer patient survival.
Epidemiology (Cambridge, Mass.) 2002;13(5):611-2.
2002: Hannelore Ehrenreich; Martin Hasselblatt; Christoph Dembowski; Lukas Cepek; Piotr Lewczuk; Michael Stiefel; Hans-Heino Rustenbeck; Norbert Breiter; Sonja Jacob; Friederike Knerlich; Matthias Bohn; Wolfgang Poser; Eckart Rüther; Michael Kochen; Olaf Gefeller; Christoph Gleiter; Thomas C Wessel; Marc De Ryck; Loretta Itri; Hilmar Prange; Anthony Cerami; Michael Brines; Anna-Leena Sirén
Erythropoietin therapy for acute stroke is both safe and beneficial.
Molecular medicine (Cambridge, Mass.) 2002;8(8):495-505.
2002: Axel Schnuch; Wolfgang Uter; Johannes Geier; Olaf Gefeller
Epidemiology of contact allergy: an estimation of morbidity employing the clinical epidemiology and drug-utilization research (CE-DUR) approach.
Contact dermatitis 2002;47(1):32-9.
2002: Olaf Gefeller; Annette Pfahlberg
Sunscreen use and melanoma: a case of evidence-based prevention?
Photodermatology, photoimmunology & photomedicine 2002;18(3):153-6; discussion 156.
2002: Johannes Geier; Peter J Frosch; Axel Schnuch; Monika Agathos; Andrea Bauer; Jochen Brasch; Gisela Gaber; Petra Gottlöber; Jürgen Grabbe; Martin Hartmann; Uta Jappe; Martin Kaatz; Dieter Lübbe; Claudia Pirker; Olaf Gefeller
Patch tests with thiurams at 0.25% pet. and 1% pet. are of equal diagnostic value.
Contact dermatitis 2002;46(5):258-61.
2002: H Brenner; Til Stuermer; Olaf Gefeller
The need for expanding and re-focusing of statistical approaches in diagnostic research.
Journal of epidemiology and community health 2002;56(5):338-9.
2002: Hermann Brenner; Olaf Gefeller; Timo Hakulinen
A computer program for period analysis of cancer patient survival.
European journal of cancer (Oxford, England : 1990) 2002;38(5):690-5.
2002: Wolfgang Uter; Annette Pfahlberg; C Kraus; W R Wienecke; U Reulbach; S Fischer; Olaf Gefeller; Klaus F Kölmel
[Monitoring of naevus density--an approximate marker of previous UV exposure--in children at school enrollment as a method to detect shifts in melanoma risk in the population].
Gesundheitswesen (Bundesverband der Ärzte des Öffentlichen Gesundheitsdienstes (Germany)) 2002;64(3):165-9.
2002: C Vogel; Olaf Gefeller
Implications of nondifferential misclassification on estimates of attributable risk.
Methods of information in medicine 2002;41(4):342-8.
2001: Peter L Kolominsky-Rabas; M Weber; Olaf Gefeller; Bernhard Neundoerfer; Peter U Heuschmann
Epidemiology of ischemic stroke subtypes according to TOAST criteria: incidence, recurrence, and long-term survival in ischemic stroke subtypes: a population-based study.
Stroke; a journal of cerebral circulation 2001;32(12):2735-40.
2001: A Pfahlberg; Olaf Gefeller
Re: "assessing the impact of classical risk factors on myocardial infarction by rate advancement periods".
American journal of epidemiology 2001;154(5):486-8.
2001: Thomas Efferth; Paul Thelen; HG Schulten; ME Bode; Bernd Granzen; AJ Beniers; Rolf Mertens; Rolf-Hermann Ringert; Olaf Gefeller; G Jakse; Laszlo Fuzesi
Differential expression of the multidrug resistance-related protein MRP1 in the histological compartments of nephroblastomas.
International journal of oncology 2001;19(2):367-71.
2001: Thomas Efferth; HG Schulten; Paul Thelen; ME Bode; AJ Beniers; Bernd Granzen; Rolf-Hermann Ringert; Rolf Mertens; Olaf Gefeller; G Jakse; Laszlo Fuzesi
Differential expression of the heat shock protein 70 in the histological compartments of nephroblastomas.
Anticancer research 2001;21(4B):2915-20.
2001: H Brenner; Olaf Gefeller; Christa Stegmaier; Hartwig Ziegler
More up-to-date monitoring of long-term survival rates by cancer registries: an empirical example.
Methods of information in medicine 2001;40(3):248-52.
2001: A Pfahlberg; Olaf Gefeller; Wolfgang Uter
Reporting of attributable risk in epidemiologic studies.
Epidemiology (Cambridge, Mass.) 2001;12(4):474-5.
2001: Thomas Efferth; ME Bode; HG Schulten; Paul Thelen; Bernd Granzen; AJ Beniers; Rolf Mertens; Olaf Gefeller; Rolf-Hermann Ringert; G Jakse; Laszlo Fuzesi
Differential expression of the lung resistance-related protein/major vault protein in the histological compartments of nephroblastomas.
International journal of oncology 2001;19(1):163-8.
2001: M Land; C Vogel; Olaf Gefeller
Partitioning methods for multifactorial risk attribution.
Statistical methods in medical research 2001;10(3):217-30.
2001: Olaf Gefeller
The concept of attributable risk in epidemiology: yesterday, today and tomorrow.
Statistical methods in medical research 2001;10(3):157-8.
2001: Wolfgang Uter; Axel Schnuch; Johannes Geier; Annette Pfahlberg; Olaf Gefeller
Association between occupation and contact allergy to the fragrance mix: a multifactorial analysis of national surveillance data.
Occupational and environmental medicine 2001;58(6):392-8.
2001: Uwe Nixdorff; C Matschke; M Winklmaier; Frank A Flachskampf; J Ludwig; Karsten Pohle; M Land; Olaf Gefeller; Werner G Daniel
Native tissue second harmonic imaging improves endocardial and epicardial border definition in dobutamine stress echocardiography.
European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology 2001;2(1):52-61.
2001: Wolfgang Uter; A Pfahlberg; Olaf Gefeller; Hans Joachim Schwanitz
[Preventing skin damage in beauticians].
Gesundheitswesen (Bundesverband der Ärzte des Öffentlichen Gesundheitsdienstes (Germany)) 2001;63 Suppl 1():S32-4.
2001: Annette Pfahlberg; Klaus F Kölmel; Olaf Gefeller
Timing of excessive ultraviolet radiation and melanoma: epidemiology does not support the existence of a critical period of high susceptibility to solar ultraviolet radiation- induced melanoma.
The British journal of dermatology 2001;144(3):471-5.
2001: Wolfgang Uter; Olaf Gefeller; J Geier; A Schnuch
Limited concordance between "oakmoss" and colophony in clinical patch testing.
The Journal of investigative dermatology 2001;116(3):478-80.
2001: Wolfgang Uter; Johannes Geier; M Land; Annette Pfahlberg; Olaf Gefeller; Axel Schnuch
Another look at seasonal variation in patch test results. A multifactorial analysis of surveillance data of the IVDK. Information Network of Departments of Dermatology.
Contact dermatitis 2001;44(3):146-52.
2001: Wolfgang Uter; Hans Joachim Schwanitz; A Pfahlberg; Olaf Gefeller
Atopic signs and symptoms: assessing the 'atopy score' concept.
Dermatology (Basel, Switzerland) 2001;202(1):4-8.
2000: Johannes Geier; A Schnuch; J Brasch; Olaf Gefeller
Patch testing with methyldibromoglutaronitrile.
American journal of contact dermatitis : official journal of the American Contact Dermatitis Society 2000;11(4):207-12.
2000: Egbert Herting; Olaf Gefeller; M Land; L van Sonderen; Karsten Harms; Bengt Robertson
Surfactant treatment of neonates with respiratory failure and group B streptococcal infection. Members of the Collaborative European Multicenter Study Group.
Pediatrics 2000;106(5):957-64; discussion 1135.
2000: Jochen Brasch; Bo Kreilgård; Tilo Henseler; W Aberer; T Fuchs; R Pflüger; Ulla Hoeck; Olaf Gefeller
Positive nickel patch tests do not intensify positive reactions to adjacent patch tests with dichromate. Results from a double-blind multicentre study of the German Contact Dermatitis Research Group (Deutsche Kontaktallergie-Gruppe, DKG).
Contact dermatitis 2000;43(3):144-9.
2000: Inga Zerr; Walter Schulz-Schaeffer; Armin Giese; Monika Bodemer; Andreas Schröter; Karsten Henkel; Henriette J Tschampa; Otto Windl; A Pfahlberg; Bernhard J Steinhoff; Olaf Gefeller; Hans A Kretzschmar; Sigrid Poser
Current clinical diagnosis in Creutzfeldt-Jakob disease: identification of uncommon variants.
Annals of neurology 2000;48(3):323-9.
2000: G E Eide; Olaf Gefeller
Re: "Attributable risk in practice".
American journal of epidemiology 2000;151(2):208-12.
2000: Annette Pfahlberg; D Schneider; Klaus F Kölmel; Olaf Gefeller
[Ultraviolet exposure in childhood and in adulthood: which life period modifies the risk of melanoma more substantially?].
Sozial- und Präventivmedizin 2000;45(3):119-24.
1999: Wolfgang Uter; A Pfahlberg; Olaf Gefeller; Hans Joachim Schwanitz
Hand dermatitis in a prospectively-followed cohort of hairdressing apprentices: final results of the POSH study. Prevention of occupational skin disease in hairdressers.
Contact dermatitis 1999;41(5):280-6.
1999: Klaus F Kölmel; Annette Pfahlberg; Giuseppe Mastrangelo; Marianne Niin; Ivan N Botev; Claus Seebacher; D Schneider; Daniel Lambert; Raphael Shafir; Eva-Maria Kokoschka; Ulrich R Kleeberg; Beate M Henz; Olaf Gefeller
Infections and melanoma risk: results of a multicentre EORTC case-control study. European Organization for Research and Treatment of Cancer.
Melanoma research 1999;9(5):511-9.
1999: Wolfgang Uter; A Pfahlberg; Olaf Gefeller; Hans Joachim Schwanitz
Risk of hand dermatitis among hairdressers versus office workers.
Scandinavian journal of work, environment & health 1999;25(5):450-6.
1999: C Laske; Olaf Gefeller; A Pfahlberg; Inga Zerr; Andreas Schröter; Sigrid Poser
The effect of stress on the onset and progression of Creutzfeldt-Jakob disease: results of a German pilot case-control study.
European journal of epidemiology 1999;15(7):631-5.
1999: Hayrettin Tumani; M Otto; Olaf Gefeller; Jörg Wiltfang; Gregor Herrendorf; S Mogge; Bernhard J Steinhoff
Kinetics of serum neuron-specific enolase and prolactin in patients after single epileptic seizures.
Epilepsia 1999;40(6):713-8.
1999: Johannes Geier; Olaf Gefeller; K Wiechmann; Thomas Fuchs
Patch test reactions at D4, D5 and D6.
Contact dermatitis 1999;40(3):119-26.
1999: Olaf Gefeller; Annette Pfahlberg; Johannes Geier; Jochen Brasch; Wolfgang Uter
The association between size of test chamber and patch test reaction: a statistical reanalysis.
Contact dermatitis 1999;40(1):14-8.
1998: Wolfgang Uter; A Pfahlberg; Olaf Gefeller; Hans Joachim Schwanitz
Prevalence and incidence of hand dermatitis in hairdressing apprentices: results of the POSH study. Prevention of occupational skin disease in hairdressers.
International archives of occupational and environmental health 1998;71(7):487-92.
1998: Olaf Gefeller; A Pfahlberg; H Brenner; J Windeler
An empirical investigation on matching in published case-control studies.
European journal of epidemiology 1998;14(4):321-5.
1998: Olaf Gefeller; M Land; G E Eide
Averaging attributable fractions in the multifactorial situation: assumptions and interpretation.
Journal of clinical epidemiology 1998;51(5):437-41.
1998: Markus Otto; Jens Wiltfang; E Schütz; Inga Zerr; A Otto; A Pfahlberg; Olaf Gefeller; M Uhr; Armin Giese; T Weber; Hans A Kretzschmar; Sigrid Poser
Diagnosis of Creutzfeldt-Jakob disease by measurement of S100 protein in serum: prospective case-control study.
BMJ (Clinical research ed.) 1998;316(7131):577-82.
1998: Wolfgang Uter; Olaf Gefeller; Hans Joachim Schwanitz
An epidemiological study of the influence of season (cold and dry air) on the occurrence of irritant skin changes of the hands.
The British journal of dermatology 1998;138(2):266-72.
1998: Wolfgang Uter; A Pfahlberg; Olaf Gefeller; Hans Joachim Schwanitz
Hand eczema in a prospectively-followed cohort of office-workers.
Contact dermatitis 1998;38(2):83-9.
1998: Olaf Gefeller; K Hassan; L Wille
Cutaneous malignant melanoma in women and the role of oral contraceptives.
The British journal of dermatology 1998;138(1):122-4.
1998: Inga Zerr; Monika Bodemer; Olaf Gefeller; Markus Otto; Sigrid Poser; Jens Wiltfang; Otto Windl; Hans A Kretzschmar; T Weber
Detection of 14-3-3 protein in the cerebrospinal fluid supports the diagnosis of Creutzfeldt-Jakob disease.
Annals of neurology 1998;43(1):32-40.
1997: Annette Pfahlberg; Olaf Gefeller; Klaus F Kölmel
Public awareness of malignant melanoma risk factors in Germany.
Journal of epidemiology and community health 1997;51(6):698-700.
1997: Hannelore Ehrenreich; J Schuck; Nike Stender; Jürgen Pilz; Olaf Gefeller; L Schilling; Wolfgang Poser; S Kaw
Endocrine and hemodynamic effects of stress versus systemic CRF in alcoholics during early and medium term abstinence.
Alcoholism, clinical and experimental research 1997;21(7):1285-93.
1997: Markus Otto; H Stein; A Szudra; Inga Zerr; Monika Bodemer; Olaf Gefeller; Sigrid Poser; Hans A Kretzschmar; Michael Mäder; T Weber
S-100 protein concentration in the cerebrospinal fluid of patients with Creutzfeldt-Jakob disease.
Journal of neurology 1997;244(9):566-70.
1997: Philippe Autier; Jean-François Doré; F Renard; H Luther; Maria Sofia Cattaruzza; Olaf Gefeller; André-Robert Grivegnée
Melanoma and sunscreen use: need for studies representative of actual behaviours.
Melanoma research 1997;7 Suppl 2():S115-20.
1997: Herbert Kolenda; Heinz Steffens; Olaf Gefeller; Johann Hagenah; Eike D Schomburg
Critical levels of spinal cord blood flow and duration of ischemia for the acute recovery of segmental spinal cord responses in cats.
Journal of spinal disorders 1997;10(4):288-95.
1997: Klaus F Kölmel; Annette Pfahlberg; Olaf Gefeller
[Prevention of melanoma by sun protective measures in childhood. Temporal changes in awareness of parents].
Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und verwandte Gebiete 1997;48(6):391-6.
1997: Uwe Pichlmeier; Olaf Gefeller
Conceptual aspects of attributable risk with recurrent disease events.
Statistics in medicine 1997;16(10):1107-20.
1997: H Brenner; Olaf Gefeller
Variation of sensitivity, specificity, likelihood ratios and predictive values with disease prevalence.
Statistics in medicine 1997;16(9):981-91.
1997: Olaf Gefeller
Relative attributable risks.
Epidemiology (Cambridge, Mass.) 1997;8(2):217-8.
1997: Hermann Brenner; Olaf Gefeller
Deriving more up-to-date estimates of long-term patient survival.
Journal of clinical epidemiology 1997;50(2):211-6.
1997: A Pfahlberg; K Hassan; L Wille; berthold lausen; Olaf Gefeller
Systematic review of case-control studies: oral contraceptives show no effect on melanoma risk.
Public health reviews 1997;25(3-4):309-15.
1997: Philippe Autier; Jean-François Doré; Olaf Gefeller; J P Cesarini; F Lejeune; K F Koelmel; Danielle Lienard; Ulrich Kleeberg
Melanoma risk and residence in sunny areas. EORTC Melanoma Co-operative Group. European Organization for Research and Treatment of Cancer.
British journal of cancer 1997;76(11):1521-4.
1997: Hannelore Ehrenreich; K tom Dieck; Olaf Gefeller; S Kaw; L Schilling; Wolfgang Poser; Eckart Rüther
Sustained elevation of vasopressin plasma levels in healthy young men, but not in abstinent alcoholics, upon expectation of novelty.
Psychoneuroendocrinology 1997;22(1):13-24.
1996: Hermann Brenner; Olaf Gefeller
An alternative approach to monitoring cancer patient survival.
Cancer 1996;78(9):2004-10.
1996: Olaf Gefeller; H Brenner
Re: "Reliability of reported sunburn history in a case-control study of cutaneous malignant melanoma".
American journal of epidemiology 1996;144(7):707-8.
1996: Inga Zerr; Monika Bodemer; Markus Otto; Sigrid Poser; Otto Windl; Hans A Kretzschmar; Olaf Gefeller; T Weber
Diagnosis of Creutzfeldt-Jakob disease by two-dimensional gel electrophoresis of cerebrospinal fluid.
Lancet 1996;348(9031):846-9.
1996: K Sydow; D Emrich; Olaf Gefeller; I Schreivogel
Quantification of the negative feedback mechanism between pituitary and thyroid in subjects with normal thyroid function.
European journal of endocrinology / European Federation of Endocrine Societies 1996;135(3):316-21.
1996: Jochen Brasch; Johannes Geier; Olaf Gefeller
Dynamic patterns of allergic patch test reactions to 10 European standard allergens. An analysis of data recorded by the Information Network of Departments of Dermatology (IVDK).
Contact dermatitis 1996;35(1):17-22.
1996: Ralf Dressel; L Heine; L Elsner; G Geginat; Olaf Gefeller; Klaus F Kölmel; Eberhard Günther
Induction of heat shock protein 70 genes in human lymphocytes during fever therapy.
European journal of clinical investigation 1996;26(6):499-505.
1996: Hannelore Ehrenreich; N Stender; Olaf Gefeller; K tom Dieck; L Schilling; S Kaw
A novelty-related sustained elevation of vasopressin plasma levels in young men is not associated with an enhanced response of adrenocorticotropic hormone (ACTH) to human corticotropin releasing factor (hCRF).
Research in experimental medicine. Zeitschrift für die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie 1996;196(5):291-9.
1995: Wolfgang Uter; Olaf Gefeller; Hans Joachim Schwanitz
[Early onset irritant skin damage in apprentice hair dressers].
Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und verwandte Gebiete 1995;46(11):771-8.
1995: P Autier; Jean-François Doré; E Schifflers; J P Cesarini; A Bollaerts; K F Koelmel; Olaf Gefeller; A Liabeuf; F Lejeune; D Lienard
Melanoma and use of sunscreens: an Eortc case-control study in Germany, Belgium and France. The EORTC Melanoma Cooperative Group.
International journal of cancer. Journal international du cancer 1995;61(6):749-55.
1995: G E Eide; Olaf Gefeller
Sequential and average attributable fractions as aids in the selection of preventive strategies.
Journal of clinical epidemiology 1995;48(5):645-55.
1995: Wolfgang Uter; Olaf Gefeller; Hans Joachim Schwanitz
Occupational dermatitis in hairdressing apprentices. Early-onset irritant skin damage.
Current problems in dermatology 1995;23():49-55.
1995: Olaf Gefeller
Definitions of attributable risk--revisited.
Public health reviews 1995;23(4):343-55.
1995: A Pfahlberg; Olaf Gefeller; H Brenner
Computational realization of point and interval estimation for risk and rate advancement periods.
Epidemiology (Cambridge, Mass.) 1995;6(1):99-100.
1995: Christian P Speer; Olaf Gefeller; Peter Groneck; E Laufkötter; Claudia Roll; L Hanssler; Karsten Harms; Egbert Herting; H Boenisch; J Windeler
Randomised clinical trial of two treatment regimens of natural surfactant preparations in neonatal respiratory distress syndrome.
Archives of disease in childhood. Fetal and neonatal edition 1995;72(1):F8-13.
1994: Egbert Herting; Olaf Gefeller; Christian P Speer; Karsten Harms; Henry L Halliday; T Curstedt; B Robertson
Intracerebral haemorrhages in surfactant treated neonates with severe respiratory distress syndrome: age at diagnosis, severity and risk factors.
European journal of pediatrics 1994;153(11):842-9.
1994: Olaf Gefeller
The effect of age at smoking initiation on lung cancer risk.
Epidemiology (Cambridge, Mass.) 1994;5(5):559-60; author reply 561.
1994: Hermann Brenner; Olaf Gefeller
Chance-corrected measures of the validity of a binary diagnostic test.
Journal of clinical epidemiology 1994;47(6):627-33.
1994: Wolfgang Weyland; A Weyland; Olaf Gefeller; S al-Soufi; Michael Sydow; Ulrich Braun
A ventilator with an integrated gas-exchange monitoring function.
Critical care medicine 1994;22(5):864-71.
1994: Olaf Gefeller; H Brenner
How to correct for chance agreement in the estimation of sensitivity and specificity of diagnostic tests.
Methods of information in medicine 1994;33(2):180-6.
1994: A G Philip; A M Tito; Olaf Gefeller; C P Speer
Neutrophil elastase in the diagnosis of neonatal infection.
The Pediatric infectious disease journal 1994;13(4):323-6.
1994: Olaf Gefeller; T Bregenzer
Computer programs for exact nonparametric inference.
Computer applications in the biosciences : CABIOS 1994;10(2):213-4.
1994: Olaf Gefeller; U Kleeberg; Klaus F Kölmel
[Comment on the contribution by U. Beiteke et al. Adjuvant therapy of primary malignant melanoma with natural human interferon-beta. Second comment].
Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und verwandte Gebiete 1994;45(3):191-2; author reply 193-4.
1993: Hermann Brenner; Olaf Gefeller
Use of the positive predictive value to correct for disease misclassification in epidemiologic studies.
American journal of epidemiology 1993;138(11):1007-15.
1993: Hermann Brenner; D A Savitz; Olaf Gefeller
The effects of joint misclassification of exposure and disease on epidemiologic measures of association.
Journal of clinical epidemiology 1993;46(10):1195-202.
1993: Olaf Gefeller
Is there really a conceptual difference in choosing the cutpoint for dichotomizing outcome and predictor variables?
Epidemiology (Cambridge, Mass.) 1993;4(3):274; author reply 276.
1993: Hermann Brenner; Olaf Gefeller; S Greenland
Risk and rate advancement periods as measures of exposure impact on the occurrence of chronic diseases.
Epidemiology (Cambridge, Mass.) 1993;4(3):229-36.
1993: Christian P Speer; D Ruess; Karsten Harms; Egbert Herting; Olaf Gefeller
Neutrophil elastase and acute pulmonary damage in neonates with severe respiratory distress syndrome.
Pediatrics 1993;91(4):794-9.
1993: Olaf Gefeller; G E Eide
Methods of adjustment for estimating the attributable risk in case-control studies: a review.
Statistics in medicine 1993;12(1):91-6.
1993: Olaf Gefeller; J Windeler
The misuse of attributable and prevented fractions in the evaluation of screening in case-control studies.
Cancer detection and prevention 1993;17(6):591-9.
1992: M Kron; Olaf Gefeller
The descriptive epidemiology of sedentary lifestyle: methodological concerns.
International journal of epidemiology 1992;21(6):1193-5.
1992: Olaf Gefeller
Comparison of adjusted attributable risk estimators.
Statistics in medicine 1992;11(16):2083-91.
1992: Klaus F Kölmel; Olaf Gefeller; B Haferkamp
Febrile infections and malignant melanoma: results of a case-control study.
Melanoma research 1992;2(3):207-11.
1992: Olaf Gefeller; G E Eide
The attributable fraction of the combined effect of two risk factors.
International journal of epidemiology 1992;21(4):819-20, 823-4.
1992: Olaf Gefeller
A simple method of avoiding the computational problems of the delta method for the end-user of statistical packages.
Computer applications in the biosciences : CABIOS 1992;8(3):293-4.
1992: Olaf Gefeller
The bootstrap method for standard errors and confidence intervals of the adjusted attributable risk.
Epidemiology (Cambridge, Mass.) 1992;3(3):271-2; author reply 272-3.
1992: Christian P Speer; Bengt Robertson; T Curstedt; Henry L Halliday; D Compagnone; Olaf Gefeller; Karsten Harms; Egbert Herting; G McClure; M Reid
Randomized European multicenter trial of surfactant replacement therapy for severe neonatal respiratory distress syndrome: single versus multiple doses of Curosurf.
Pediatrics 1992;89(1):13-20.
1992: Olaf Gefeller; H Steinberg
Cuff size and hypertension diagnosis.
Epidemiology (Cambridge, Mass.) 1992;3(1):73-5.
1992: Egbert Herting; Christian P Speer; Karsten Harms; Bengt Robertson; T Curstedt; Henry L Halliday; D Compagnone; Olaf Gefeller; G McClure; M Reid
Factors influencing morbidity and mortality in infants with severe respiratory distress syndrome treated with single or multiple doses of a natural porcine surfactant.
Biology of the neonate 1992;61 Suppl 1():26-30.
1991: Olaf Gefeller; J Windeler
Risk factors for cervical cancer: comments on attributable risk calculations and the evaluation of screening in case-control studies.
International journal of epidemiology 1991;20(4):1140-3.
1991: Olaf Gefeller
Years of potential life lost (YPLL)--what does it measure?
Epidemiology (Cambridge, Mass.) 1991;2(2):160.
1991: Stephan K Weiland; Ulrich Keil; A Spelsberg; Hans-Werner Hense; U Härtel; Olaf Gefeller; W Dieckmann
Diagnosis and management of hypertension by physicians in the Federal Republic of Germany.
Journal of hypertension 1991;9(2):131-4.
1990: Olaf Gefeller
[Problems in the extrapolation of attributable risk estimates].
Sozial- und Präventivmedizin 1990;35(3):89-93.
1990: Olaf Gefeller; H Steinberg
The impact of deviation from standardized blood pressure determination on prevalence estimates of hypertension in Germany.
Public health reviews 1990;18(2):179-82.
1988: U Keil; Olaf Gefeller; J Stieber
[Smoking behavior in Lübeck. Results of the Lübeck blood pressure study].
Fortschritte der Medizin 1988;106(28):563-7.