Table 1. Characteristics of the patients included in the study.
| Group 1 TSH < 2.5 mIU/L |
Group 2 TSH 2.5–4.0 mIU/L |
Group 3 TSH 4.0–10 mIU/L |
||
|---|---|---|---|---|
| (n = 455) | (n = 162) | (n = 33) | p | |
| TSH (mIU/L) | 1.5 (1.1–1.9) | 2.9 (2.7–3.4) | 4.4 (4.1–4.6) | < 0.001 |
| Interval between TSH dosage and cycle (months) | 8 (4–18) | 8 (3–13) | 6 (1–12) | 0.23 |
| Age (years) | 35 (31–38) | 35 (32–38) | 35 (31–39) | 0.36 |
| Duration of subfertility (months) | 60 (38–92) | 54 (30.3–86) | 60.5 (36.3–91.8) | 0.26 |
| Weight (kg) | 64 (57–73) | 64 (57.9–72.3) | 64.7 (53.3–74.1) | 0.86 |
| Height (m) | 1.63 (1.58–1.67) | 1.64 (1.59–1.68) | 1.62 (1.6–1.65) | 0.46 |
| BMI (kg/m2) | 24.2 (21.6–27.4) | 24 (21.9–27.3) | 24.2 (21.2–27.3) | 0.94 |
| AFC | 10 (6–18) | 10 (6 -17) | 12 (6–18) | 0.62 |
| Causes of subfertility | n (%) | n (%) | n (%) | 0.90 |
| Ovulatory factor | 15 (3.3) | 3 (1.9) | 1 (3) | |
| Endometriosis | 71 (15.6) | 28 (17.3) | 3 (9.1) | |
| Male Factor | 136 (29.9) | 46 (28.4) | 11 (33.3) | |
| Tubal factor | 42 (9.2) | 20 (12.3) | 4 (12.1) | |
| Combined factors | 136 (29.9) | 43 (26.5) | 10 (30.3) | |
| Unexplained | 55 (12.1) | 22 (13.6) | 4 (12.1) |
Abbreviations: AFC, antral follicle count; BMI, body mass index; TSH, thyroid-stimulating hormone.
Notes: TSH, age, duration of subfertility, weight, height, BMI and AFC are reported as median (interquartile range).
p determined by either Kruskal-Wallis or Chi-squared test.