title: Psychometric evaluation of health related quality of life among rural-to-urban migrants in China.
abstract: OBJECTIVE
  Our study discusses health related quality of life (HRQOL) as measured by 36-item Short Form (SF-36) for rural-to-urban migrants in China, and assesses the validity and reliability of the SF-36 for this group.
  
  
  METHODS
  In 2012,765 rural-to-urban migrant respondents chosen by probability and the non-probability sampling methods have completed the survey in Wuhan, Mid-China. The reliability of SF-36 is analyzed by Cronbach's alpha (α) coefficient, split-half coefficient, theta (θ) and omega (Ω) coefficient, the validity is calculated by confirmatory factor analysis (CFA) and known-group methods.
  
  
  RESULTS
  Split-half reliability coefficient is 0.717. Cronbach's alpha coefficient is 0.776. Theta and omega coefficient are 0.862 and 0.903 respectively. CFA statistical analysis results are shown as follows: GFI = 0.926, Chi-Square/Df = 2.059, RMSEA = 0.037, CFI = 0.939. Physical and mental component summary (PCS/MCS) scores are tabulated by known-group variables and show a statistical significance.
  
  
  CONCLUSIONS
  In general, SF-36 is a reliable and valid instrument for measuring HRQOL of rural-to-urban migrants in China. Furthermore, Chinese migrants have lived and worked in a hard environment, their salaries are much lower than that of the counterparts, HRQOL of this group is also a little lower and deserves much attention from society.
authors.affiliation: Wuhan University, School of Public Health, Global Health Institute, Wuhan, China.
authors.forename: Peigang
authors.initials: P
authors.lastname: Wang
authors.affiliation: Renmin University of China, School of Statistics, Beijing, China.
authors.forename: Cen
authors.initials: C
authors.lastname: Chen
authors.affiliation: Hohai University, School of International Languages and Cultures, Nanjing, China.
authors.forename: Ronghua
authors.initials: R
authors.lastname: Yang
authors.affiliation: Wuhan University, School of Information Management, Wuhan, China. wuyan@whu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People / Q000523:psychology* / Q000706:statistics & numerical data*; D002681:China; D005163:Factor Analysis, Statistical; D005260:Female; D006305:Health Status Indicators; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000295:instrumentation*; D011788:Quality of Life / Q000523:psychology*; D015203:Reproducibility of Results; D012424:Rural Population / Q000706:statistics & numerical data*; D014171:Transients and Migrants / Q000523:psychology*; D014505:Urban Population / Q000706:statistics & numerical data*; D055815:Young Adult