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Characteristics of folic acid supplementation by sex of infant in northern China
| Characteristics | N | Women with male infants | Women with female infants | P-value |
|---|---|---|---|---|
| Folic acid supplementation (Months) | 18,201 | 5.5(2.4) | 5.5(2.4) | 0.180 |
| Timing | 0.369 | |||
| Periconception | 12,779 | 70.5 | 70.4 | |
| Preconception | 3623 | 20.1 | 19.8 | |
| Postconception | 1714 | 9.7 | 9.4 | |
| Compliance | 0.190 | |||
| < 80% | 3310 | 17.9 | 18.6 | |
| ≥80% | 14,839 | 82.1 | 81.4 | |
