Function to calculate the design effect of a stepped wedge cluster randomised study.

Source: R/stepped_wedge.r

Function to calculate the design effect of a stepped wedge cluster randomised study.

get_deff_swedge(k, b, t, icc, size)

Arguments

k

Number of steps in the stepped wedge study
b

Number of baseline measurements
t

Number of measurements after each step
icc

Intracluster correlation coefficient (ICC)
size

cluster size

Value

A numeric value of the design effect of a stepped wedge cluster ranomised study

Examples


  get_deff_swedge(k = 2, b = 1, t = 1, icc = 0.034, size = 192)
#> [1] 1.415725