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Table 1 Power and sample size calculation in the male linkage to care study in uThukela District, KwaZulu-Natal, 2019

From: Linkage to HIV care and early retention in HIV care among men in the ‘universal test-and-treat’ era in a high HIV-burdened district, KwaZulu-Natal, South Africa

p1

p2

delta

alpha

Beta

k1

k2

m1

m2

rho

0.62

0.72

0.10

0.05

0.76

9

9

22

22

0.01

  1. Where p - linkage to care proportions; delta– difference between proportions; alpha - z values used for calculating type 1 error; beta - z value used for calculating power; rho– inter-cluster correlation; m– average cluster size and k - number of clusters. N - sample size for study period allowing for cluster randomization
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BMC Health Services Research

ISSN: 1472-6963

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