Table 1.

Sample sizes and loss to follow-up ratios at different stages.

Intervention time	Total
	N	Loss of follow-up (%)
Baseline	1488	—
1 month	1420	4.57
3 months	1380	7.26
6 months	1271	14.58
9 months	1186	20.3
12 months	1092	26.61