Observed percentages (n) of women using nutritional supplements by maternal age4-150
| Nutrient† | <24 y (n=230) | 24–27 y (n=286) | 28 y and over (n=258) |
|---|---|---|---|
| Vitamin C | 5.2 (12) | 7.3 (21) | 14.0 (36) |
| Vitamin E | 4.3 (10) | 6.6 (19) | 13.2 (34) |
| Carotenoids | 3.0 (7) | 2.8 (8) | 3.9 (10) |
| Retinol | 3.5 (8) | 4.2 (12) | 8.9 (23) |
| Vitamin D | 5.2 (12) | 7.7 (22) | 15.9 (41) |
| Thiamin | 4.3 (10) | 7.0 (20) | 13.2 (34) |
| Folic Acid | 22.2 (51) | 20.3 (58) | 24.0 (62) |
| Vitamin B12 | 3.9 (9) | 7.0 (20) | 11.2 (29) |
| Iron | 14.8 (34) | 13.3 (38) | 13.2 (34) |
| Zinc | 0.9 (2) | 3.1 (9) | 5.8 (15) |
| Calcium | 2.6 (6) | 3.1 (9) | 7.0 (18) |
↵4-150 No women consumed supplemental selenium. †For all nutrients except carotenoids, folic acid and iron, statistically significant association between age and supplement use in logistic regression using age as a continuous variable (p<0.01 in all cases).