get_var_ratio: Calculates the ratio of the slope variance to the...

In powerlmm: Power Analysis for Longitudinal Multilevel Models

Description

Calculates the ratio of the slope variance to the within-subjects error variance

Usage

get_var_ratio(object, ...)

Arguments

object	An object created by study_parameters
...	Optional arguments.

Value

Returns the ratio of the total slope variance to the within-subject error as a numeric vector.

Examples

paras <- study_parameters(n1 = 11,
                          n2 = 10,
                          n3 = 3,
                          T_end = 10,
                          sigma_subject_intercept = 1.2,
                          sigma_subject_slope = 0.2,
                          sigma_cluster_intercept = 0,
                          sigma_cluster_slope = 0.2,
                          sigma_error = 1.2,
                          cohend = -0.8)

get_var_ratio(paras)

Example output

[1] 0.05555556

powerlmm documentation built on May 2, 2019, 3:10 a.m.