Psychometric characteristics of the Pittsburgh Sleep Quality Index in English speaking non-Hispanic whites and English and Spanish speaking Hispanics of Mexican descent

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). The PSQI was administered during a telephone interview. In order to test the factor s...

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Bibliographic Details
Published in:Journal of clinical sleep medicine 2013-01, Vol.9 (1), p.61-66
Main Authors: Tomfohr, Lianne M, Schweizer, C Amanda, Dimsdale, Joel E, Loredo, José S
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Aged, 80 and over
European Continental Ancestry Group - psychology
European Continental Ancestry Group - statistics & numerical data
Factor Analysis, Statistical
Female
Humans
Male
Mexican Americans - psychology
Mexican Americans - statistics & numerical data
Middle Aged
New Research
Psychometrics
Sleep
Sleep Wake Disorders - diagnosis
Sleep Wake Disorders - ethnology
Surveys and Questionnaires - standards
Young Adult
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Summary: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). 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. San Diego County. Community-dwelling English speaking, NHW (n = 1,698) and English (n = 654) and Spanish (n = 792) speaking HMD. 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. 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.
ISSN:1550-9389
1550-9397
DOI:10.5664/jcsm.2342