title: A systematic review of studies on the prevalence of insomnia in university students.
abstract: OBJECTIVE
  Many studies have shown that insomnia is a common problem among university students, but there are wide variations in the prevalence of insomnia. In this systematic review, we aimed to explore the prevalence of insomnia among university students using scientific and conclusive methods.
  
  
  METHODS
  A systematic review is designed to analyze the studies reporting on prevalence of insomnia among university students.
  
  
  METHODS
  Systemic searches were conducted in PubMed, BioMed Central, EBSCO, ScienceDirect, Ovid LWW and Medline databases between January 2000 and July 2014, The Meta analyst software was used to calculate the prevalence rate of each study, the pooled means of prevalence rates and 95% CIs across studies were then calculated and presented.
  
  
  RESULTS
  Seven articles that met the inclusion and exclusion criteria were selected. The overall sample size in the current review was 16,478, with a minimum of 219 and a maximum of 10,322. The prevalence rates of the seven studies ranged between 9.4% (95%CI 8.8-10.0%) and 38.2% (95% CI 35.4-41.1%). Overall, the total students studied with a weighted mean prevalence of 18.5% (95% CI 11.2-28.8%), considerably higher than rates of 7.4% (95% CI 5.8-9.0%) reported in general population.
  
  
  CONCLUSIONS
  This review emphasized that insomnia prevalence in university students is considerably higher than that in general population, suggested that more attention should be paid to insomnia in university students.
authors: Department of Epidemiology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University of China, Guangzhou prov, 510515, China. Electronic address: 729271960@qq.com.
authors: X-l
authors: XL
authors: Jiang
authors: Department of Epidemiology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University of China, Guangzhou prov, 510515, China.
authors: X-y
authors: XY
authors: Zheng
authors: Department of Physiology, School of Basic Medical Sciences, Southern Medical University of China, Guangzhou prov, 510515, China.
authors: J
authors: J
authors: Yang
authors: Department of Epidemiology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University of China, Guangzhou prov, 510515, China.
authors: C-p
authors: CP
authors: Ye
authors: Department of Epidemiology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University of China, Guangzhou prov, 510515, China.
authors: Y-y
authors: YY
authors: Chen
authors: Department of Physiology, School of Basic Medical Sciences, Southern Medical University of China, Guangzhou prov, 510515, China.
authors: Z-g
authors: ZG
authors: Zhang
authors: Department of Physiology, School of Basic Medical Sciences, Southern Medical University of China, Guangzhou prov, 510515, China. Electronic address: 1971994747@qq.com.
authors: Z-j
authors: ZJ
authors: Xiao
mesh_terms: D000328:Adult; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology*; D013334:Students / Q000706:statistics & numerical data*; D014495:Universities; D055815:Young Adult
keywords: Insomnia; Prevalence; Systematic review; University students