American Journal of Clinical Dermatology

, Volume 15, Issue 2, pp 87–94

Medical Adherence to Acne Therapy: A Systematic Review

  • Stephanie Snyder
  • Ian Crandell
  • Scott A. Davis
  • Steven R. Feldman
Systematic Review

DOI: 10.1007/s40257-014-0063-y

Cite this article as:
Snyder, S., Crandell, I., Davis, S.A. et al. Am J Clin Dermatol (2014) 15: 87. doi:10.1007/s40257-014-0063-y

Abstract

Background

Poor adherence of acne patients to treatment may equate to poor clinical efficacy, increased healthcare costs, and unnecessary treatments. Authors have investigated risk factors for poor medical adherence and how to improve this difficult problem in the context of acne.

Objective

This systematic review aims to describe what methods have been used to measure adherence, what is known about acne patients’ adherence to treatment, and the factors affecting adherence.

Methods

A MEDLINE search was performed for randomized controlled trials published between 1978 and June 2013, focusing on patient adherence to prescribed acne medications. A test for equality of proportions was performed on studies of similar design to collectively analyze adherence to oral versus topical medication. The self-reported adherence data collected from these clinical trials were then compared with adherence data from a pharmacy database study.

Results

Studies varied in modalities of data collection, but the majority utilized subjective methods. Topical therapies were more often studied than oral. The overall oral adherence rate, as calculated by a test of equality of proportions, was 76.3 %, while the overall topical adherence rate was 75.8 % (p = 0.927). The occurrence of side effects and young age were cited as the top reasons for poor adherence, followed by forgetfulness.

Limitations

The MEDLINE search resulted in a limited sample of adherence studies. In addition, there is currently no standardized or fully validated method of measurement, allowing for variability in what was considered ‘adherent’. Lastly, data collected via subjective methods cannot guarantee reliable results.

Conclusions

Overall, the values reflected a population adherent to both topical and oral medications, with no significant difference in adherence between the two. However, the methodologies used by many of the studies were weak, and the findings are not consistent with results of more objective measures of adherence. The leading factors that contribute to poor adherence may be reduced with enhanced patient consultation, reminder systems, and education.

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Stephanie Snyder
    • 1
  • Ian Crandell
    • 1
  • Scott A. Davis
    • 1
  • Steven R. Feldman
    • 1
    • 2
    • 3
  1. 1.Department of Dermatology, Center for Dermatology ResearchWake Forest University School of MedicineWinston-SalemUSA
  2. 2.Department of Pathology, Center for Dermatology ResearchWake Forest University School of MedicineWinston-SalemUSA
  3. 3.Department of Public Health Sciences, Center for Dermatology ResearchWake Forest University School of MedicineWinston-SalemUSA