FLIM (version 1.2)

panss: PANSS data

Description

The PANSS or the Positive and Negative Syndrome Scale is a medical scale used for measuring symptom severity of patients with schizophrenic conditions. panss contains data from a longitudinal study where 3 different treatments were considered. Patients were followed for 8 weeks and PANSS score was recorded on week 0, 1, 2, 4, 6 and 8. The lower PANSS score a patient has, the less symptoms. Data was extracted from a larger, and confidential, set of clinical trial data from a randomised clinical trial.

Usage

data(panss)

Format

A data frame with 685 observations on the following 4 variables.

treat

a factor variable with 3 levels

time

observation times

Y

PANSS score

id

id number

Source

http://www.lancaster.ac.uk/staff/diggle/APTS-data-sets/PANSS_short_data.txt P. Diggle. Dealing with missing values in longitudinal studies. In Recent Advances in the Statistical Analysis of Medical Data, editor, B.S. Everitt and G. Dunn, pages 203–228, 1998.

Examples

library(FLIM)	
data(panss)
head(panss, 8)