Table 1.
Maternal characteristics according to folic acid user status, n=2911
| Folic acid user | Folic acid non-usera | P values | |
|---|---|---|---|
| Number | N=2067 | N=844 | |
| Age, years, vn | 29.9 (4) | 29.5 (5) | 0.04b |
| Current BMI, mean (SD) | 25.4 (8.3) | 26.7 (11.9) | 0.004b |
| Current weight increase, kg, mean (SD) | 2.7 (4.0) | 3.0 (3.8) | 0.04b |
| Marital status | |||
| Married, n (%) | 2016 (98%) | 793 (94%) | <0.001c |
| Education | |||
| Primary school, n (%) | 120 (6%) | 131 (16%) | <0.001c |
| Secondary school, n (%) | 606 (31%) | 326 (41%) | |
| University or college, n (%) | 1237 (63%) | 340 (43%) | |
| Parity | |||
| Primipara, n (%) | 938 (45%) | 278 (33%) | <0.001c |
| Number of former children, mean (SD) | 1.4 (0.7) | 1.6 (0.8) | <0.001b |
| Smoking | |||
| Daily smoking, n (%) | 131 (6%) | 115 (14%) | <0.001c |
| Number of cigarettes/day, mean (SD) | 7.2 (8.0) | 9.75 (10.6) | 0.18b |
| Plasma cotinin level in daily smokers, μmol/L, mean (SD) | 489 (268–769) | 504 (307–737) | 0.63d |
a
No supplements, n=582, + Other supplements, n=262
b
Student’s t-test
c
Chi-Square test
d
Kruskal-Wallis test