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Table 1 Clinical characteristics and hormones level in the two sub-groups of participants based on Anti-Mullerian hormone (AMH) levels.

From: The relationship between thyroid function and ovarian reserve: a prospective cross-sectional study

  Age ≤ 35 years Age > 35 years
AMH < 1.1 ng/ml
Median (IQR)
AMH ≥ 1.1 ng/ml
Median (IQR)
P-value AMH < 1.1 ng/ml
Median (IQR)
AMH ≥ 1.1 ng/ml
Median (IQR)
*P-value
BMI 26.6 (24.96–29.2) 27.0 (24.50–29.77) 0.909 27.6 (25.5–30.4) 28.4 (26.68–31.32) 0.102
Clinical hypothyroidism yes 2 (66.7%) 1 (33.3%) 0.096 6 (100%) 0 0.181
no 22 (18.2%) 99 (81.8%) 127 (69%) 57 (31%)
total 24 (19.4%) 100 (80.6%) 133 (70%) 57 (30%)
Subclinical hypothyroidism yes 2 (28.6%) 5 (71.4%) 0.525 15 (83.3%) 3 (16.7%) 0.194
no 22 (18.8%) 95 (81.2%) 118 (68.6%) 54 (31.4%)
total 24 (19.4%) 100 (80.6%) 133 (70%) 57 (30%)
TSH (mIU/L) 1.97 (1.22–3.69) 2.1 (1.46–3.2) 0.09 2.3 (1.3–3.5) 1.8 (1.8–3.25) 0.03
Free T4 (ng/dl) 8.55 (6.75–11.42) 8.77 (7.51–10.15) 0.98 8.5 (6.5–9.8) 8.83 (7.8–10.1) 0.05
FSH (IU/L) 9.95 (7.92–17.55) 5.5 (4.1–6.8) 0.0001 8.7 (5.85–11.85) 6.5 (4.75–7.8) 0.0001
E2 (pg/ml) 39.5 (26.67–70.45) 48 (37.2–68.15) 0.12 57.1 (33–81.15) 49 (35.6–68.7) 0.29
  1. *Mann–Whitney U test
  2. AMH Anti-Mullerian hormone, IQR Interquartile range, FSH Follicle-stimulating hormone, E2 Estradiol, TSH Thyroid stimulating hormone, Free T4 Thyroxine