Table.
Variable | Low education | Middle education | High education | Adjusted odds ratio* (95% CI) | ||
---|---|---|---|---|---|---|
All respondents | ||||||
1995 (1608)† | 601 (37.4) | 686 (42.7) | 321 (20.0) | — | ||
1996 (1573)‡ | 550 (35.0) | 696 (44.2) | 327 (20.8) | — | ||
Awareness of folic acid | ||||||
1995: | ||||||
Ever | 399/598 (66.7) | 585/677 (86.4) | 296/318 (93.1) | 6.2 (3.8 to 10.0) | ||
Before pregnancy | 168/601 (28.0) | 313/686 (45.6) | 183/321 (57.0) | 3.2 (2.3 to 4.3) | ||
1996: | ||||||
Ever | 441/550 (80.2) | 651/696 (93.5) | 315/327 (96.3) | 5.8 (3.0 to 11.1) | ||
Before pregnancy | 350/550 (63.6) | 580/696 (83.3) | 287/327 (87.8) | 3.7 (2.5 to 5.5) | ||
Use of folic acid | ||||||
1995: | ||||||
Some | 101/578 (17.5) | 181/664 (27.3) | 122/134 (38.9) | 2.7 (2.0 to 3.8) | ||
Advised period | 14/578 (2.4) | 33/664 (5.0) | 31/314 (9.9) | 3.8 (1.9 to 7.4) | ||
1996: | ||||||
Some | 244/520 (46.9) | 387/663 (58.4) | 217/312 (69.6) | 2.4 (1.8 to 3.3) | ||
Advised period | 86/520 (16.5) | 150/663 (22.6) | 100/312 (32.1) | 2.1 (1.5 to 3.0) |
High versus low education. Adjusted for age, gravidity, region, and previous child with a congenital anomaly. †28 missing. ‡39 missing.