Table 5.
Adjusted linear regression model for associations between serum folate levels with socio-demographic variables and nutritional status in women of childbearing age living in urban areas of the Metropolitan Region of Chile
| Variable | β | 95 % CI | P | |
|---|---|---|---|---|
| Lower limit | Upper limit | |||
| Age (years) | 0·053 | −0·040 | 0·147 | 0·264 |
| Educational level | 0·939 | |||
| Low | 0·050 | −3·366 | 4·465 | 0·782 |
| Medium | −0·104 | −1·851 | 1·644 | 0·907 |
| High | 0·000 | |||
| Marital status | 0·897 | |||
| Married | 0·055 | −2·075 | 2·186 | 0·959 |
| Separated, divorced or widowed | −0·491 | −3·274 | 2·291 | 0·728 |
| Single | 0·000 | |||
| Parity (no. of pregnancies) | 0·488 | |||
| 0 | 0·790 | −2·109 | 3·689 | 0·592 |
| Between 1 and 2 | −0·814 | −2·678 | 1·050 | 0·390 |
| 3 or more | 0·000 | |||
| Nutritional status | 0·359 | |||
| BMI (kg/m2) | −0·067 | −0·211 | 0·077 | 0·359 |
| Physical activity (during leisure time) | 0·755 | |||
| Yes | −0·221 | −1·748 | 1·306 | 0·775 |
| No | 0·000 | |||
| Smoking status | 0·564 | |||
| No | −0·495 | −2·187 | 1·196 | 0·564 |
| Yes | 0·000 | |||
| Folic acid supplementation | 0·021 | |||
| No | −10·893 | −20 127 | −1660 | 0·021 |
| Yes | 0·000 | |||
Multivariate linear regression model for serum folate levels adjusted for age (years, continuous), educational level (low, medium and high), marital status (married; separated, divorced or widowed; single), parity (0, 1–2, ≥3 pregnancies), nutritional status (BMI (kg/m2), continuous), physical activity during leisure time (yes, no), smoking status (non-smoker, current smoker) and folic acid supplementation (yes, no).