psychiatric: Psychiatric Clinical Trial
Description
This data set consider information from a pychiatric clinical trial,
reported by Hedeker and Gibbons (1994) and collected in the NIMH
Schizophrenia Collaborative Study on treatment-related changes in
overall severity. For each patient, the Impatient Multidimensional
Psychiatric Scale was scored. In this study, 437 patients were randomly
assigned to receive one of four medications: placebo, chlorpromazine,
fluphenazine, or thioridazine.source
Hedeker, D. and Gibbons, R.D. (1994) A random-effects ordinal regression model for
multilevel data. Biometrics, 50: 933-944.References
Hedeker, D. and Gibbons, R.D. (1994) A random-effects ordinal regression model for
multilevel data. Biometrics, 50: 933-944.Examples
Run this codedata(psychiatric)
## maybe str(psychiatric) ; plot(psychiatric) ...
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