rci: Function for the reliable change index

In zieglema/ClinicalSig: Contains several functions helpful for assessing clinical significance

Description

Function for the reliable change index

Usage

rci(pre, post, data, rtt, sdNorm)

Arguments

pre	The variable containing the values from before the intervention
post	The variable containing the values from after the intervention
data	Data set containing the variables
rtt	Test-retest correlation for the used measure. Should be from the relevant population and with no intervention in between
sdNorm	Standard deviation of the used measure in the norm group.

Value

Returns the RCI for each person in the data set

Examples

dataRci <- rci(pre="U1_GDS_G", post="U2_GDS_G", data=dat, rtt=.83, sdNorm=6.8)
hist(dataRci$rci, main="Histogram of RCI", xlab="RCI", breaks=30, col="blue")

zieglema/ClinicalSig documentation built on June 1, 2019, 6:03 p.m.