These are the data of five clinical trials in schizophrenia. A total of \(2128\) patients were treated by \(198\) investiagators (psychiatrists). Patients' schizophrenic symptoms were measured using the PANSS, BPRS, and CGI. There were two treatment conditions (risperidone and control).
data(Schizo)A data.frame with \(2128\) observations on \(9\) variables.
IdThe patient ID.
InvestIDThe ID of the investigator (psychiatrist) who treated the patient.
TreatThe treatment indicator, coded as \(-1\) = control and \(1\) = Risperidone.
CGIThe change in the CGI score (= score at the start of the treatment - score at the end of the treatment).
PANSSThe change in the PANSS score.
BPRSThe change in the BPRS score.
PANSS_BinThe dichotomized PANSS change score, coded as \(1\) = a reduction of 20% or more in the PANSS score (score at the end of the treatment relative to score at the beginning of the treatment), \(0\) = otherwise.
BPRS_BinThe dichotomized BPRS change score, coded as \(1\) = a reduction of 20% or more in the BPRS score (score at the end of the treatment relative to score at the beginning of the treatment), \(0\) = otherwise.
CGI_BinThe sichtomized change in the CGI score, coded as \(1\) = a change of more than \(3\) points on the original scale (score at the end of the treatment relative to score at the beginning of the treatment), \(0\) = otherwise.