Table 1.
Characteristics of study population of women undergoing IUI cycles according to TSH level (mIU/l)a
| Variables | TSH 0.40–2.49 mIU/l | TSH 2.50–4.99 mIU/l | p-values |
|---|---|---|---|
| n = 233 | n = 69) | ||
| TSH level (mIU/l) | 1.44 ± 0.53 | 3.29 ± 0.63 | < 0.001 |
| Age | |||
| Female age (y) | 29.3 ± 4.4 | 29.1 ± 4.4 | 0.76 |
| Partner age (y) | 32.8 ± 4.3 | 33.3 ± 4.2 | 0.31 |
| Medical history | |||
| Duration of marriage (y) | 4 (3–7) | 4 (3–6) | 0.98 |
| Duration of infertility (y) | 3 (2–4.5) | 3 (2–5) | 0.39 |
| Parity | 0.92 | ||
| 0 | 197 (84.5%) | 59 (85.6%) | |
| ≥ 1 | 36 (15.5%) | 10 (14.5%) | |
| Lifestyle factors | |||
| BMI (kg/m2) | 25.1 ± 3.9 | 25.7 ± 4.0 | 0.36 |
| No. Smokers (%) | 204 (87.6%) | 64 (92.8%) | 0.23 |
| 29 (12.4%) | 5 (7.2%) | ||
| Ovarian reserve | |||
| Day 3 FSH (U/l) | 6.2 ± 2.1 | 6.7 ± 1.9 | 0.36 |
| Day 3 E2 | 56.1 ± 37 | 53.5 ± 30 | 0.54 |
| AFC | 14 (8–20) | 13 (9–20) | 0.82 |
| Sperm quality | |||
| Sperm conc. (×106) | 47.5 (30–62.5) | 41 (26–58) | 0.11 |
| Sperm motility | 50 (45–53.5) | 50 (45–52) | 0.13 |
| TPMS (×106) | 42.3 (24–67.3) | 31.2 (18.2–59.2) | 0.06 |
| Sperm morphology | 2(1–3) | 3(2–3) | 0.32 |
aAt first cycle according to TSH level
Data shown as means ± standard deviations or median (IQR)