Table 2.
Assessment of the effects of variables causing iodine urinary concentrations lowers than 150 micrograms/litre
| Variables | Model 1a | Model 2b | Model 3c | |||
|---|---|---|---|---|---|---|
| (OR, 95% CI) | P-value | (AOR,95% CI) | P-value | (AOR,95% CI) | P-value | |
| Age (years) | 1.0 (0.98–1.02) | 0.96 | 1.005 (0.98–1.02) | 0.65 | – | – |
| No. of live deliveries | 0.67 (0.43–1.04) | 0.079 | 0.85 (0.35–1.19) | 0.24 | – | – |
| No. of previous pregnancies | 0.84 (0.61–1.15) | 0.29 | 0.63 (0.30–1.35) | 0.16 | 0.59 (0.39–0.89) | 0.012 |
| Weight gain during pregnancy | 0.86 (0.8–0.92) | < 0.001 | 0.88 (0.82–0.95) | 0.002 | 0.87 (0.83–0.95) | 0.002 |
| The timing between the recent two pregnancies | 0.80 (0.68–0.94) | 0.007 | 0.78 (0.64–0.95) | 0.014 | 0.8 (0.68–0.95) | 0.015 |
| Type of pregnancy | ||||||
| Planned | Reference | – | Reference | – | Reference | – |
| Unplanned | 2.38 (1.30–4.35) | 0.005 | 2.92 (1.29–6.58) | 0.01 | 3.3 (1.65–6.63) | 0.001 |
| Mother’s level of education | ||||||
| Illiterate | Reference | – | Reference | – | Reference | – |
| Senior high | 0.88 (0.19–4.1) | 0.88 | 0.22 (0.04–1.35) | 0.11 | – | – |
| M.S. | 0.49 (0.1–2.1) | 0.35 | 0.13 (0.3–0.73) | 0.022 | – | – |
| B.S or higher | 1.1 (0.09–13.5) | 0.94 | 0.1 (0.05–1.79) | 0.11 | – | – |
| Iodinated salt intake | ||||||
| Yes | Reference | – | Reference | – | Reference | – |
| No | 1.05 (0.40–2.73) | 0.91 | 0.91 (0.11–2.29) | 0.38 | – | – |
| Complement intake during pregnancy | ||||||
| Yes | Reference | – | Reference | – | Reference | – |
| No | 5.38 (2.73–10.6) | < 0.001 | 3.64 (1.44–9.1) | 0.006 | 4.8 (2.1–10.1) | < 0.001 |
| Fish consumption | ||||||
| Yes | Reference | – | Reference | – | Reference | – |
| No | 0.81 (0.41–1.6) | 0.54 | 0.89 (0.41–1.56) | 0.58 | – | – |
a univariate model
b full model by enter method
c backward stepwise model