TABLE 3.
Plasma vitamin B-12 concentrations at week 30 of pregnancy by tertile of capsule intake and micronutrient supplementation type in a selected sample of rural Bangladeshi women participating in the MINIMat trial1
| Micronutrient type | Lowest tertile (6–65 capsules) | Middle tertile (66–99 capsules) | Highest tertile (100–157 capsules) |
| Fe30F | |||
| n | 60 | 54 | 65 |
| Mean,2 pmol/L | 103 (88, 120) | 120 (87, 141) | 101 (87, 119) |
| Unadjusted mean difference3 | Reference | 0.15 (−0.08, 0.38) | −0.01 (−0.23, 0.21) |
| Adjusted mean difference4 | Reference | 0.23 (−0.01, 0.47) | 0.02 (−0.22, 0.25) |
| Fe60F | |||
| n | 67 | 65 | 61 |
| Mean,2 pmol/L | 94 (81, 109) | 112 (96, 130) | 98 (85, 116) |
| Unadjusted mean difference3 | Reference | 0.17 (−0.04, 0.39) | 0.05 (−0.17, 0.26) |
| Adjusted mean difference4 | Reference | 0.18 (−0.04, 0.40) | −0.00 (−0.23, 0.22) |
| MMN | |||
| n | 52 | 69 | 67 |
| Mean,2 pmol/L | 103 (87, 119) | 124 (108, 143) | 128 (111, 147) |
| Unadjusted mean difference3 | Reference | 0.19 (−0.01, 0.40) | 0.22 (0.02, 0.43)* |
| Adjusted mean difference4 | Reference | 0.16 (−0.05, 0.38) | 0.15 (−0.07, 0.37) |
Data were analyzed by using general linear models. *Different from the lowest tertile, P < 0.05. Fe30F, 30 mg Fe and 400 μg folic acid; Fe60F, 60 mg Fe and 400 μg folic acid; MINIMat, Maternal and Infant Nutrition Intervention, Matlab; MMN, multiple micronutrient supplement.
Values are geometric means (95% CIs).
Values are loge mean differences (95% CIs).
Models adjusted for maternal formal years of education (none, 1–5 y, or ≥6 y), socioeconomic status (quintiles), food supplementation, week 14 micronutrient concentration (loge), and duration of supplementation.