design_matrix {scdhlm}

Create a design matrix for a single-case design

Description

Create a design matrix containing a linear trend, a treatment effect, and a trend-by-treatment interaction for a single-case design with m cases and n measurement occasions.

Usage

design_matrix(m, n, treat_times = n/2 + 1, center = 0)

Arguments

m

number of cases

n

number of time points

treat_times

(Optional) vector of length m listing treatment introduction times for each case.

center

centering point for time trend.

Value

A design matrix

Examples

design_matrix(3, 16, c(5,9,13))