Table 2.
Multivariate logistic regression analysis of the relationships of knowledge of folic acid benefits, correct time of folic acid intake, actual folic acid intake and selected sociodemographic characteristics.
| Parameter | Knowledge of folic acid benefits | Correct time of folic acid intake | Actual folic acid intake | |||
|---|---|---|---|---|---|---|
| OR (95% CI) | p | OR (95% CI) | p | OR (95% CI) | p | |
| Age (year) | ||||||
| 20–24 | 1.00 | – | 1.00 | – | 1.00 | – |
| 25–29 | 1.64 (1.11–2.41) | <0.05 | 1.05 (0.67–1.65) | NS | 0.98 (0.53–1.81) | NS |
| 30–34 | 2.13 (1.38–3.27) | <0.01 | 1.21 (0.74–1.99) | NS | 1.41 (0.73–2.71) | NS |
| 35–39 | 2.00 (1.06–3.78) | <0.05 | 1.25 (0.61–2.56) | NS | 1.73 (0.72–4.11) | NS |
| 40–45 | 0.86 (0.31–2.41) | NS | 0.69 (0.19–2.51) | NS | 1.05 (0.21–5.31) | NS |
| Education | ||||||
| High school or less | 1.00 | – | 1.00 | – | 1.00 | – |
| College/university | 2.42 (1.80–3.25) | <0.01 | 1.79 (1.25–2.56) | <0.01 | 0.90 (0.58–1.39) | NS |
| Contraception | ||||||
| At all time | 1.00 | – | 1.00 | – | 1.00 | – |
| Sometimes | 0.90 (0.59–1.38) | NS | 0.89 (0.55–1.44) | NS | 1.43(0.77–2.66) | NS |
| Never | 0.69 (0.52–0.91) | NS | 0.75 (0.55–1.03) | NS | 1.61(1.10–2.38) | <0.01 |
| Planning to be pregnant | ||||||
| No | 1.00 | – | 1.00 | – | 1.00 | – |
| Yes | 3.11 (2.36–4.10) | <0.01 | 1.37 (1.01–1.85) | <0.05 | 3.54 (2.43–5.14) | <0.01 |
| Knowledge of folic acid benefit | ||||||
| No | – | – | 1.00 | – | 1.00 | – |
| Yes | – | – | 7.23 (5.49–9.53) | <0.01 | 2.81 (1.88–4.20) | <0.01 |
| Knowing correct time of folic acid intake information | ||||||
| No | – | – | – | – | 1.00 | – |
| Yes | – | – | – | – | 2.14 (1.50–3.05) | <0.01 |
NS – Not significant.