ismail | R Documentation |
Two-phase stratified random sampling design for the prevalence of psychiatric disorders in Gulf War veterans. In the first phase a random sample of veterans from a population of 53,462 were administered the SF-36 questionnaire. Respondents were classified as either disabled or not disabled. The second phase used a stratified random sampling design from the first sample. The sampled veterans were then assessed by psychiatrists to determine if they had an alcohol, sleep, or other psychiatric disorder.
ismail
A data frame 3453 observations and four variables:
classification of respondent based on SF-36 questionnaire (disabled or not-disabled)
alcohol related disorder (yes or no)
sleep related disorder (yes or no)
psychiatric related disorder (yes or no)
Becauses the data are reconstructed based on marginal counts, the co-occurrence of the three disorders are not necessarily correct and should not be used. The data are orginally from Ismail et al. (2002) and are featured in Lohr (2010).
Ismail et al. (2002). The mental health of UK gulf war veterans: Phase 2 of a two phase cohort study. British Medical Journal, 325, 576–579.
Lohr, S. L. (2010). Sampling: Design and analysis (2nd edition). Boston: Brooks/Cole.
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