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Table 2 Study power showing community ART provision is not inferior to standard-of-care, in terms of viral suppression 12 months after either enrolling into community ART or continuing with standard-of-care at the clinic

From: A comparison of different community models of antiretroviral therapy delivery with the standard of care among stable HIV+ patients: rationale and design of a non-inferiority cluster randomized trial, nested in the HPTN 071 (PopART) study

Standard of care, % not virally suppressed at 12 months after enrolment (%) Non-inferiority margin (%) Coefficient of variation k Number of participants per cluster Study power (%)
10 5 0.25 30 93
15 5 0.25 30 78
10 5 0.30 30 91
15 5 0.30 30 74