Table 4.
Predictors of adherence to preconception and prenatal supplements among 4417 Vietnamese women participating in PRECONCEPT
| Odds of consuming >80% of supplementsa | Preconception entire sample (n = 4417) | Preconception among women who became pregnant (n = 1183) | Prenatal (n = 1183) |
|---|---|---|---|
| Maternal Characteristics | |||
| Age | 1.00 (0.99, 1.02) | 0.99 (0.96, 1.03) | 1.02 (0.98, 1.06) |
| Minority ethnicity | 0.78 (0.67, 0.91)* | 0.66 (0.47, 0.91)* | 0.84 (0.59, 1.19) |
| Farmer | 0.71 (0.58, 0.88)* | 1.27 (0.85, 1.91) | 1.33 (0.91, 1.93) |
| Completed High school | 0.96 (0.79, 1.17) | 0.95 (0.64, 1.43) | 0.99 (0.67, 1.45) |
| Underweight (BMI < 18.5 kg/m2) | 0.93 (0.79, 1.09) | 0.65 (0.47, 0.91)* | 0.81 (0.59, 1.13) |
| Anemic (Hb <12 mg/dl) | 1.04 (0.86, 1.25) | 1.03 (0.69, 1.53) | 1.41 (0.93, 2.14) |
| First pregnancy | 1.26 (0.70, 2.27) | 1.52 (0.65, 3.50) | 0.54 (0.29, 0.99)* |
| Household characteristics | |||
| SES index quintiles (vs. I Lowest) | |||
| II | 1.67 (1.34, 2.07)* | 1.60 (1.02, 2.49)* | 1.64 (0.97, 2.77) |
| III | 2.00 (1.59, 2.52) * | 1.75 (1.10, 2.80)* | 1.53 (0.92, 2.55) |
| IV | 2.17 (1.71, 2.76)* | 3.09 (1.80, 5.31)* | 1.51 (0.92, 2.50) |
| V | 2.71 (2.10, 3.52) * | 3.90 (2.16, 7.05)* | 1.49 (0.91 2.44) |
| Food Insecure | 0.88 (0.74, 1.04) | 0.69 (0.49, 0.97)* | 0.84 (0.59, 1.19) |
| Programmatic Factors | |||
| Supplementation group (vs. FA) | |||
| MM | 0.98 (0.81, 1.17) | 1.03 (0.69, 1.52) | 1.10 (0.74, 1.62) |
| IFA | 0.99 (0.83 1.19) | 1.22 (0.83, 1.80) | 0.90 (0.63, 1.30) |
| Village health worker visits | 1.03 (1.02, 1.04)* | 1.05 (1.01, 1.10)* | 1.18 (1.13, 1.23)* |
| Response to supplements | |||
| Aftertaste | 1.05 (0.81, 1.36) | 0.53 (0.29, 0.97)* | 1.00 (0.52, 1.90) |
| Side effects | 0.96 (0.80, 1.16) | 1.40 (0.89, 2.20) | 0.92 (0.61, 1.38) |
aOdds ratios were estimated using Multivariate Logistic Regression to adjust for all other predictors in the table. *p < 0.05