construct_trtMat: Construct Treatment Matrix

In SteppedPower: Power Calculation for Stepped Wedge Designs

Construct Treatment Matrix

Description

Constructs a matrix of '#cluster' rows and '#timepoint' columns, indicating treatment status in each cluster at each timepoint.

Usage

construct_trtMat(Cl, trtDelay, dsntype, timepoints = NULL)

Arguments

Cl	integer (vector), number of clusters per sequence group (in SWD), or number in control and intervention (in parallel designs)
trtDelay	numeric (possibly vector), 'NA'(s) and/or value(s) between '0' and '1'. 'NA' means that first (second, ... ) period after intervention start is not observed. A value between '0' and '1' specifies the assumed proportion of intervention effect in the first (second ... ) intervention period.
dsntype	character, defines the type of design. Options are "SWD", "parallel" and "parallel_baseline", defaults to "SWD".
timepoints	numeric (scalar or vector), number of timepoints (periods). If design is swd, timepoints defaults to length(Cl)+1. Defaults to 1 for parallel designs.

Value

a matrix trtMat, where rows and columns correspond to cluster and timepoints, respectively

Examples

construct_trtMat(Cl=c(1,2,1), trtDelay=c(.2,.8), dsntype="SWD")

SteppedPower documentation built on Sept. 13, 2023, 1:07 a.m.