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Table 3 Site-specific population and desired number of women for survey

From: Economic evaluation of Community Level Interventions for Pre-eclampsia (CLIP) in South Asian and African countries: a study protocol

Variables Pakistan India Nigeria Mozambique Total
Total population per cluster 32,000 27,000 70,000 25,000 154,000
Number of intervention and control clusters 20 12 10 12 54
Annual birth rate (/1000/year) 14 22 16 40 92
Total number births during trial period 19,800 19,200 26,880 24,400 90,280
Estimated number of women with pre-eclampsia during trial period 1584 1536 2150 1952 7220
Number of women required for survey 113 113 136 126 488