Table 2.
Variables associated with urinary iodine concentration in linear regression analyses
| Variable | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
| Ratio* (95% CI) | P‐value | Ratio* (95% CI) | P‐value | |
| Age (year) | 1.00 (0.99, 1,06) | 0.423 | NA | |
| Socioeconomic status | 1.00 (0.89, 1.13) | 0.958 | NA | |
| Energy (kJ) | 1.00 (0.99, 1.00) | 0.215 | NA | |
| Weight‐for‐height z‐score | 1.04 (0.94, 1.14) | 0.473 | NA | |
| Gender | 0.83 (0.68, 1.00) | 0.055 | 0.86 (0.71, 1.04) | 0.112 |
| Dietary iodine (10 µg) | 1.04 (1.01, 1.07) | 0.013 | 1.04 (1.00, 1.07) | 0.026 |
CI, confidence interval; NA, not applicable. *Ratio of geometric means from log‐transformed data.