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The prevalence of acne in Mainland China: a systematic review and meta-analysis
  1. Danhui Li1,
  2. Qiang Chen2,
  3. Yi Liu3,
  4. Tingting Liu4,
  5. Wenhui Tang5,
  6. Shengjie Li6
  1. 1 Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Medical School, Xi’an Jiaotong University, Xi'an, China
  2. 2 School of Public Health, Taishan Medical University, Tai'an, China
  3. 3 Department of Dermatology, Affiliated Hospital of Jining Medical University, Jining, China
  4. 4 The School Hospital of Taishan Medical University, Taishan Medical University, Tai'an, China
  5. 5 Department of Biomedical Engineering, Maternal and Child Health Care of Laiwu City in Shandong Province, Laiwu, China
  6. 6 Department of Clinical Laboratory, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai, China
  1. Correspondence to Shengjie Li; lishengjie6363020{at}163.com

Abstract

Introduction Acne, a very common skin disease, can result in psychological distress and sustain impairment in quality of life. Data on the prevalence of acne and the differences in gender, region and age are limited. The aim of this review is to estimate the prevalence of acne in Mainland China comprehensively and to quantify its association with gender, region and age.

Methods We searched electronic databases with predetermined search terms to identify relevant studies published between 1 January 1996 and 30 September 2016. We pointed out repeated results using Note Express software and evaluated the studies for inclusion. Two independent reviewers extracted the data, followed with statistical analyses using Comprehensive Meta-Analysis software version 2.0. A random effects model was adopted to calculate the overall pooled prevalence and to merge categories, including gender (males and females), region (Northern China and Southern China) and age (primary and secondary students: 7–17 years old; undergraduates: 18–23 years old; overall: no limits of age) for subgroup analyses. Logistic meta-regression analysis was used to clarify the associations between acne and the predictors age, gender and region using OR and their associated 95% CI.

Results 25 relevant studies were included in this meta-analysis. The overall pooled prevalence rates of acne were 39.2% (95% CI 0.310 to 0.479). The prevalence rates in different age groups were 10.2% overall (95% CI 0.059 to 0.171), 50.2% for primary and secondary students (95% CI 0.451 to 0.554), and 44.5% for undergraduates (95% CI 0.358 to 0.534); by gender, the prevalence rates were 35.7% for females (95% CI 0.275 to 0.448) and 39.7% for males (95% CI 0.317 to 0.482); and by region, the prevalence rates were 34.2% for Northern China (95% CI 0.242 to 0.458) and 46.3% for Southern China (95% CI 0.374 to 0.555). The associations between acne and the predictors age, gender and region were statistically significant.

Conclusions In Mainland China, primary and secondary students exhibited higher prevalence rates than undergraduate students; males had higher prevalence rates of acne than females; and the prevalence rates of acne in Southern China was higher than Northern China.

  • Acne
  • Dermatological epidemiology

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/

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Footnotes

  • Contributors SJL and DHL conceived the study and participated in drafting the final manuscript. QC and YL analysed the data and completed the final draft of the manuscript. TTL and WHT prepared all the figures. All authors reviewed the manuscript.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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