Table 3 Quartiles of study subjects in relation to birth outcomes and estimated iodine intake (as mean ± sd)
From: Estimated dietary iodine intake as a predictor of placental size: evidence from the ELSPAC study
Variable | Estimated iodine intake [μg/day] | ||||
|---|---|---|---|---|---|
Q1 (6.6; 79.7] | Q2 (79.7; 101.0] | Q3 (101.0; 127.5] | Q4 (127.5; 612.5] | P- value | |
Birth length [cm] | 50.1 ± 2.3 | 50.2 ± 2.2 | 50.3 ± 2.3 | 50.1 ± 2.3 | 0.112 |
Birth weight [g] | 3288 ± 470 | 3287 ± 470 | 3325 ± 493a | 3263 ± 501a | 0.035 |
Placental weight [g] | 591 ± 168 | 595 ± 167a | 587 ± 166 | 576 ± 163a | 0.035 |
Cephalisation index [μm/g] | 107.5 ± 20.1 | 107.1 ± 16.4 | 106.0 ± 16.8a | 108.0 ± 17.3a | 0.059 |
Ponderal index [kg/m3] | 25.9 ± 2.2 | 25.9 ± 2.5 | 26.0 ± 2.3 | 25.8 ± 2.2 | 0.266 |
Birth weight/Placental weight [−] | 5.9 ± 1.6 | 5.9 ± 1.6 | 6.0 ± 1.55 | 6.0 ± 1.6 | 0.083 |