Table 3.
Non-parametric regression model of the univariate association between maternal and infant characteristics and infant urinary iodine concentration (µg/L) (n = 130). Numbers are presented as β with 95% confidence interval.
| Independent Variables | ß and 95% CI a | |
|---|---|---|
| Maternal age in Years | 3.7 | −1.2, 9.3 |
| Maternal educational level | ||
| <12 years | Reference | |
| 12 years | 0.0 | −1.3, 0.9 |
| 1–4 years college/university | 0.2 | −1.9, 2.4 |
| >4 years college/university | 0.3 | −1.6, 2.1 |
| Maternal BMI, kg/m2 | ||
| 18.5–24.9 (Normal weight) | Reference | |
| <18.5 (Underweight) | 3.6 | −2.1, 9.4 |
| 25–29.9 (Overweight) | −1.2 | −10.4, 7.8 |
| >30 (Obese) | 1.9 | −3.7, 6.8 |
| Maternal iodine knowledge score | ||
| Poor (0–5) | Reference | |
| Low (6–11) | 4.7 | −2.1, 13.8 |
| Medium (12–19) | −3.2 | −10.2, 5.4 |
| High (20–26) | 4.7 | −2.1, 10.8 |
| Maternal use of supplement last 24 h, yes | −0.3 | −7.7, 6.9 |
| Infant age in weeks | 1.4 | −0.2, 2.7 |
| Infant gender, boy | 3.1 | −7.7, 13.2 |
| Breastfeeding status | ||
| Weaned | Reference | |
| Partially | −70.2 | −121.8, −24.5 |
| Exclusively | −79.6 | −141.6, −36.5 |
a CI = Confidence interval.