title: Psychometric characteristics of the Pittsburgh Sleep Quality Index in English speaking non-Hispanic whites and English and Spanish speaking Hispanics of Mexican descent.
abstract: OBJECTIVE
  The current study investigated the factor structure of the Pittsburgh Sleep Quality Index (PSQI) among English speaking non-Hispanic whites (NHW) and English and Spanish speaking Hispanics of Mexican descent (HMD).
  
  
  METHODS
  The PSQI was administered during a telephone interview. In order to test the factor structure of the PSQI structure across ethnic/language groups, multiple group confirmatory analysis with covariates (MIMIC) was employed. The 1- and 3-factor versions of the PSQI previously reported in the literature were examined.
  
  
  METHODS
  San Diego County.
  
  
  METHODS
  Community-dwelling English speaking, NHW (n = 1,698) and English (n = 654) and Spanish (n = 792) speaking HMD.
  
  
  RESULTS
  A single-factor scoring model fit across language/ethnic groups; however, a 3-factor model provided a better than the 1-factor model in all language/ethnic groups. The subscale sleep medications loaded poorly and was removed from all models.
  
  
  CONCLUSIONS
  Across groups, a 3-factor model of the PSQI more reliably assessed sleep quality than a single-factor global score. Results indicate that the 3-factor structure of the PSQI was uniform across English speaking NHW and English and Spanish speaking HMD.
authors: San Diego State University & University of California, San Diego, Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA. ltomfohr@ucsd.edu
authors: Lianne M
authors: LM
authors: Tomfohr
authors: C Amanda
authors: CA
authors: Schweizer
authors: Joel E
authors: JE
authors: Dimsdale
authors: José S
authors: JS
authors: Loredo
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D017058:Mexican Americans / Q000523:psychology* / Q000706:statistics & numerical data; D008875:Middle Aged; D011594:Psychometrics; D012890:Sleep; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000208:ethnology*; D011795:Surveys and Questionnaires / Q000592:standards*; D044465:White People / Q000523:psychology* / Q000706:statistics & numerical data; D055815:Young Adult