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Number and percentage of maternal supplement use in the different periods of use (week 13 to 17; 9 to 12; -4 to 8). Supplement use categorized as no supplements; other supplements; folic acid only; folic acid plus, N=2911.
| No supplements | Other supplements | Folic acid only | Folic acid plus | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Supplement use in weeks: | n | % | n | % | n | % | n | % | |
| 13 to 17 | 1 119 | 38.4 | 634 | 21.8 | 211 | 7.2 | 947 | 32.5 | |
| 9 to 12 | 1 223 | 42.0 | 234 | 8.0 | 512 | 17.6 | 942 | 32.4 | |
| -4 to 8 | 1 180 | 40.5 | 267 | 9.2 | 526 | 18.1 | 938 | 32.2 | |
