Table 4.
Univariate and multivariate logistic regression of the association of the actual folic acid intake daily and selected sociodemographic characteristics.
| Parameter | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
| OR (95% CI) | p value | OR (95% CI) | p value | |
| Age (year) | ||||
| 20–24 | 1 | 1 | ||
| 25–29 | 1.32 (0.76–2.30) | NS | 0.98 (0.53–1.81) | NS |
| 30–34 | 1.94 (1.07–3.52) | <0.01 | 1.41 (0.73–2.71) | NS |
| 35–39 | 2.41 (1.09–5.30) | <0.01 | 1.73 (0.72–4.11) | NS |
| 40–45 | 0.83 (0.18–3.86) | NS | 1.05 (0.21–5.31) | NS |
| Education | ||||
| High school or less | 1 | 1 | ||
| College or university | 1.18 (0.80–1.72) | NS | 0.90 (0.58–1.39) | NS |
| Contraception | ||||
| At all time | 1 | 1 | ||
| Sometimes | 1.76 (0.99–3.13) | NS | 1.43(0.77–2.66) | NS |
| Never | 2.71 (1.96–3.74) | <0.01 | 1.61(1.10–2.38) | <0.01 |
| Planning to be pregnant in next six months | ||||
| No | 1 | 1 | ||
| Yes | 5.21 (3.78–7.19) | <0.01 | 3.54 (2.43–5.14) | <0.01 |
| Knowledge of folic acid benefits | ||||
| Unknown | 1 | 1 | ||
| Known | 4.59 (3.22–6.54) | <0.01 | 2.81 (1.88–4.20) | <0.01 |
| Time information of FA | ||||
| Unknown | 1 | 1 | ||
| Known | 3.31 (2.43–4.50) | <0.01 | 2.14 (1.50–3.05) | <0.01 |
CI – Confidence interval; NS – Not significant; OR – Odds ratio.