Table 2 Median (5th–95th centile) values of thyroid hormones in pregnant and non-pregnant Sudanese women
From: Trimester-specific thyroid hormone reference ranges in Sudanese women
Variable | Non- pregnant | Trimester-I | Trimester-II | Trimester-III | P |
|---|---|---|---|---|---|
Mean = 10.8 weeks | Mean =21.5 weeks | Mean =31.2 weeks | |||
TSH, IU/ml | 2.080 (0.776–4.550) | 1.164 (0.079–2.177) | 1.364 (0.540–2.521) | 1.445 (0.588–2.460) | Non- Pregnant vs. Pregnant P < 0.001 |
Trimester-I vs. Trimester-II P = 0.042 | |||||
Trimester-I vs. Trimester-III P = 0.007 | |||||
Trimester-II vs. Trimester-III P = 0.482 | |||||
Free T3, pmol/l | 5.176 (4.156–6.095) | 4.639 (3.843–6.562) | 4.347 (3.425–5.447) | 4.132 (3.176–5.164) | Non- Pregnant vs. Pregnant P < 0.001 |
Trimester-I vs. Trimester-II P < 0.001 | |||||
Trimester-I vs. Trimester-III P < 0.001 | |||||
Trimester-I vs. Trimester-III P = 0.064 | |||||
Free T4, pmol/l | 16.34 (12.6–19.9) | 16.86 (13.02–31.48) | 13.51 (11.04–31.07) | 12.87 (9.807–23.78) | Non- Pregnant vs. Pregnant P < 0.001 |
Trimester-I vs. Trimester-II P = 0.008 | |||||
Trimester-I vs. Trimester-III P < 0.001 | |||||
Trimester-I vs. Trimester-III P =0.078 |