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Table 3 Minimum detectable alternative intracluster

From: Systems analysis and improvement approach to optimize the hypertension diagnosis and care cascade for PLHIV individuals (SAIA-HTN): a hybrid type III cluster randomized trial

  Intracluster correlation (ρ)
Endline proportion of control arm visits (p0)   0.10 0.15 0.2
0.05 0.20 0.25 0.29
0.10 0.28 0.33 0.37
0.15 0.35 0.40 0.44
  1. The minimum detectable alternative proportion of visits by people living with HIV at which blood pressure is measured during the final 3 months of the intervention, by endline proportion of visits in the control arm and intracluster correlation. Calculations assume α = 0.05. 1000 visits per facility and 80% power