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Table 2 Sample size calculations for the single round survey

From: Reasons for unmet need for family planning, with attention to the measurement of fertility preferences: protocol for a multi-site cohort study

Significance level

Power

% of outcome in unexposed

Effect size (relative risk)

Sample size for women in need for FP

Overall sample size

0.05

80%

30%

30% (1.3)

1283

2567

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Reproductive Health

ISSN: 1742-4755