BCRA3_2r: Model 4.2: MDES Calculator for 3-Level Random Effects Blocked...

Description Usage Arguments Value

View source: R/power_formulas.R

Description

MDEs for 3-Level Random Effects Blocked Cluster Random Assignment Designs

Usage

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2
BCRA3_2r(R2_1, R2_2, R2_T3, P, g_3, n, J, K, rho_2, rho_3, omega_3,
  alpha = 0.05, power = 0.8, tails = 2)

Arguments

R2_1

Proportion of variance in level 1 outcome explained by level 1 covariates

R2_2

Proportion of variance in level 2 outcome explained by level 2 covariates

R2_T3

Proportion of between block variance in treatment effect explained by Level-3 covariates

P

Proportion of the level 3 units randomized to the treatment

g_3

Number of level 3 Covariates used

n

Mean # of level 1 units per level 2 unit

J

Mean # of level 2 units per level 3 unit

K

Number of level 3 units

rho_2

proportion of variance in outcome that is between level 2 units

rho_3

proportion of variance in outcome that is between level 3 units

omega_3

Level 3 treatment effect heterogeneity: variance in treatment effect across Level 3 units, standardized by Level-3 outcome variation

alpha

Probability of a type I error

power

Statistical power (1 - probability of type II error)

tails

One or two tailed test

Value

Minimum Detectable Effect Size


alishinski/CRTpower documentation built on May 22, 2019, 3:38 p.m.