• Sinéad Langan, Jochen Schmitt, Pieter-Jan Coenraads, Ake Svensson, Erik von Elm, Hywel Williams, and European Dermato-Epidemiology Network (EDEN).
• Centre of Evidence-Based Dermatology, C Floor, South Block, Queen's Medical Centre, Nottingham NG 2UH, England. sinead.langan@nottingham.ac.uk
• Arch Dermatol. 2010 May 1;146(5):534-41.

ObjectiveTo assess the quality of reporting in observational studies in dermatology.Data SourcesFive dermatology journals-the Archives of Dermatology, the British Journal of Dermatology, the Journal of the American Academy of Dermatology, the Journal of Investigative Dermatology, and Acta Dermato-Venereologica.Study SelectionCohort, case-control, and cross-sectional studies published as original articles during the period January 2005 through December 2007. Studies were identified with a literature search of PubMed combining the journal title and the term epidemiological studies (free text) and by hand searching all of the issues of each journal to identify relevant articles.Data ExtractionAll articles were extracted by 2 reviewers independently using standardized checklists based on the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) recommendations.Data SynthesisThe number and proportion of reported STROBE items were analyzed for each article. The proportion of studies with good reporting for each item was also assessed.ResultsA total of 138 articles were included and analyzed. Reporting quality was very mixed. Key areas that were infrequently reported included sample size calculations (n = 10 [7%]), missing data (n = 8 [6%]), losses to follow-up (n = 17 [12%]), and statistical methods (n = 19 [14%]). Only 13 studies (9%) explained the role of funders in the research. The quality of reporting was similar across study designs for "critical" questions with the exception of reporting of participant details, which was better reported in cohort studies (96%) compared with cross-sectional (80%) and case-control (70%) studies.ConclusionsIt is difficult to judge the quality of dermatological research unless it is reported well. This study has identified a clear need to improve the quality of reporting of observational studies in dermatology. We recommend that dermatology journals adopt the STROBE criteria.

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