Clinical recommendations made in dermatology publications are frequently not supported by adequate evidence

Abstract

Objectives

Absolute risk and cost-benefit analyses are necessary to guide clinical decision making. The purpose of this study was to evaluate whether clinical recommendations in dermatology publications were supported by adequate evidence. We also assessed whether dermatology residents report sufficient evidence when they author publications.

Methods

We analyzed the clinical cohort, case-control, and case series studies published in JAMA Dermatology and the Journal of American Academy of Dermatology from January 2018 to December 2018 for statistical significance, absolute associations, diagnostic and therapeutic clinical recommendations, and risk-benefit analysis. We also identified articles with a U.S. dermatology resident as first or second author.

Results

We found that the majority of articles reported statistical significance, but only 3% included absolute risk analyses and none had risk-benefit analysis. Furthermore, 42% of studies with a dermatology resident as a primary author reported statistical significance, but none provided absolute risk or risk-benefit analyses.

Conclusions

Reviewers need to be more aware of the evidentiary needs required for clinical recommendations, and dermatology residents may benefit from additional statistics training.

Keywords:

• Absolute risk
• dermatology
• relative risk
• residents

Disclosure statement

Dr. Steven Feldman has received research, speaking and/or consulting support from a variety of companies including Galderma, GSK/Stiefel, Almirall, Leo Pharma, Boehringer Ingelheim, Mylan, Celgene, Pfizer, Valeant, Abbvie, Samsung, Janssen, Lilly, Menlo, Merck, Novartis, Regeneron, Sanofi, Novan, Qurient, National Biological Corporation, Caremark, Advance Medical, Sun Pharma, Suncare Research, Informa, UpToDate and National Psoriasis Foundation. He is founder and majority owner of www.DrScore.com and founder and part owner of Causa Research, a company dedicated to enhancing patients’ adherence to treatment. Kathleen Coerdt, Wasim Haidari, and Dr. Huang have no conflicts of interest.