Table 6.
Predictors of vitamin A, B12 and folate status in pregnant women, controlling for trimester: linear regression analyses (continuous variables) 1.
| Variable | RBP, Adjusted for APP 2 | Vitamin B12 3 | Folate 3 | |||
|---|---|---|---|---|---|---|
| β (95% CI) | p | β (95% CI) | p | β (95% CI) | p | |
| Demographic and socio-economic characteristics 4 | ||||||
| Age (year) | −0.0017 (−0.0052, 0.0019) | 0.36 | 0.00035 (−0.0036, 0.0043) | 0.86 | 0.0030 (−0.00075, 0.0020) | 0.12 |
| Age at first pregnancy (year) | −0.0059 (−0.017, 0.0048) | 0.28 | 0.014 (0.0022, 0.026) | 0.02 | −0.0050 (−0.016, 0.0064) | 0.39 |
| HFIAS score | 0.0049 (0.00065, 0.0092) | 0.02 | −0.0043 (−0.0090, 0.00035) | 0.07 | −0.0028 (−0.0075, 0.0020) | 0.25 |
| Housing quality index | 0.045 (−0.096, 0.19) | 0.53 | 0.28 (0.10, 0.49) | 0.01 | 0.0025 (−0.14, 0.17) | 0.98 |
| Household ownership index | 0.0096 (−0.012, 0.032) | 0.39 | 0.020 (−0.0047, 0.044) | 0.11 | −0.0076 (−0.031, 0.016) | 0.53 |
| Nutritional and health status 3 | ||||||
| Mid-upper arm circumference (cm) | 0.012 (0.0032, 0.020) | 0.01 | −0.0051 (−0.014, 0.0043) | 0.29 | 0.012 (0.0023, 0.021) | 0.01 |
| Gestational weight gain (kg/week) | −0.039 (−0.086, 0.0084) | 0.11 | −0.036 (−0.085, 0.015) | 0.16 | 0.028 (−0.023, 0.081) | 0.29 |
1 RBP, retinol binding protein; APP, acute phase proteins; HFIAS, Household Food Insecurity Access Scale; 2 RBP: continuous adjustment to the 10th percentile of study specific C-reactive protein and α-1-acid glycoprotein concentrations; 3 Vitamin B12 and folate: logarithmically transformed, β values are back-transformed to be interpreted as a multiplicative effect in the original unit; 4 Data exclude participants in first trimester, n = 1.