Figure 4From: Optimizing linkage and retention to hypertension care in rural Kenya (LARK hypertension study): study protocol for a randomized controlled trial Power to detect differences in the proportion of patients linked to care over a realistic range of ICC coefficients. Horizontal line is at 80% power. CHWs, community health workers; ICC, intraclass correlation; TBCS, CHWs with a tailored behavioral communication strategy; TBCS-ST, CHWs with a communication strategy and also equipped with smartphone technology; UC, usual care.Back to article page