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Table 4 Sample size for before vs. after comparison of sick children aged 2–59 months correctly managed

From: Protocol for the evaluation of a complex intervention aiming at increased utilisation of primary child health services in Ethiopia: a before and after study in intervention and comparison areas

Indicator Expected level at baseline Children per group required for a 10, 15 or 20 percentage point increasea
Children correctly managmed 10 15 20
% of sick children aged 2–59 months who were correctly managed 50% 892 391 216
  1. aAssuming 80% power, design effect of 1.4, 90% completeness