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Table 4 Predictors of adherence to preconception and prenatal supplements among 4417 Vietnamese women participating in PRECONCEPT

From: Predictors of adherence to micronutrient supplementation before and during pregnancy in Vietnam

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)

  1. aOdds ratios were estimated using Multivariate Logistic Regression to adjust for all other predictors in the table. *p < 0.05