Table 2.
Urinary iodine concentration (UIC) and percentage below cut‐off points for pregnant women in first, second and third trimester, and for the control group
| Parameters | All pregnant | First trimester | Second trimester | Third trimester | Control group |
|---|---|---|---|---|---|
| N | 240 | 73 | 78 | 89 | 60 |
| Median UIC (μg L−1) | 119 | 144 | 108 | 92 | 166 |
| Minimum | 2 | 8 | 8 | 2 | 22 |
| Maximum | 1168 | 890 | 1168 | 890 | 870 |
| 20th percentile (μg L−1) | 64 | 85.6 | 68.8 | 56 | 67.2 |
| UIC < 50 μg L−1 | 10.42 (25) | 13.70 (10) | 8.97 (7) | 8.99 (8) | 10.00 (6)% |
| UIC < 100 μg L−1 | 40.00 (96) | 26.03 (19) | 39.74 (31) | 51.69 (46) | 28.33 (17)% |
| UIC < 150 μg L−1 | 61.67 (148) | 52.05 (38) | 65.38 (51) | 66.29 (59) | 45.00 (27)% |
Figures in parentheses are the number of women.