Demonstration phase – Rwanda & Zambia
At 5% significance, with 14 facilities we are powered (80%) to detect an approximate 20% difference in the proportion of women who complete their first contact in the first trimester with 100 women per facility per period (4 months). Baseline data in Table To account for possible data loss, we have increased the sample size by 20%. Therefore, we will recruit 120 observations per facility per period. This would yield a sample size of 1680 per period (840 per cluster, 30 per facility per month); for a total sample of 10 080 women attending their first ANC contact over the course of 24 months of data collection.A summary table of the planned data collection processes, sample size and data sources are available in Table 