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Table 3 Sample size for before vs. after comparison of sick child care seeking

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 survey Households per group required for a 10, 15 or 20 percentage point increasea
Care seeking 10 15 20
% of children aged 2–59 months who were reported to have an illness in the past 2 weeks for whom advice or treatment was sought from an appropriate provider 55% 12,210 5299 2893
  1. aAssuming 80% power, and using the baseline design effect of 1.001 and 94% completeness