Characteristics | Age < 35 y (n = 1531) | Age ≥ 35 y (n = 715) | ||||||
---|---|---|---|---|---|---|---|---|
Low AMH (n = 324) | Medium AMH (n = 746) | High AMH (n = 461) | P- value | Low AMH (n = 272) | Medium AMH (n = 343) | High AMH (n = 100) | P- value | |
Age (years) | 31 (20–34) a | 31 (20–34) b | 30 (20–34) c | < 0.0001 | 37 (35–46) a | 37 (35–46) b | 36 (35–42) c | < 0.0001 |
AMH (ng/ml) | 1.10 (0.06–1.60) a | 2.70 (1.61–3.98) b | 5.22 (3.99–16.21) c | < 0.0001 | 1.05 (0.02–1.60) a | 2.50 (1.61–3.91) b | 5.00 (4.00–14.30) c | < 0.0001 |
BMI (kg/m2) | 22.6 (20.7–25.4) a, b | 22.3 (16.0–33.3) b | 22.8 (15.6–36.1) a | 0.007 | 23.0 (16.0–33.2) | 23.0 (16.5–35.8) | 23.0 (17.2–33.9) | 0.931 |
Previous conception [% (n/N)] | 24.4 (79/324) | 24.1 (180/746) | 23.2 (107/461) | 0.912 | 44.5 (121/272) | 47.2 (162/343) | 45.0 (45/100) | 0.780 |
Duration of infertility (years) | 4 (1–14) | 4 (1–12) | 4 (1–14) | 0.636 | 4 (1–20) | 4 (1–17) | 5 (1–16) | 0.377 |
Primary infertility [% (n/N)] | 62.0 (201/324) | 60.9 (454/746) | 62.3 (287/461) | 0.869 | 39.0 (106/272) | 35.6 (122/343) | 42.0 (42/100) | 0.441 |
Main diagnosis | < 0.0001 | < 0.0001 | ||||||
Ovulation disorder | 6.2 (20/324) a | 7.5 (56/746) a | 26.5 (122/461) b | 2.6 (7/272) a | 7.6 (26/343) b | 19.0 (19/100) c | ||
Tubal factor | 42.3 (137/324) a, b | 48.1 (359/746) b | 37.7 (174/461) a | 41.5 (113/272) | 41.4 (142/343) | 46.0 (46/100) | ||
Male factor | 17.3 (56/324) a | 23.3 (174/746) a, b | 24.5 (113/461) b | 15.8 (43/272) | 18.1 (62/343) | 17.0 (17/100) | ||
Endometriosis | 15.7 (51/324) a | 10.7 (80/746) a | 5.2 (24/461) b | 12.9 (35/272) | 10.8 (37/343) | 7.0 (7/100) | ||
Unexplained | 18.5 (60/324) a | 10.3 (77/746) b | 6.1 (28/461) c | 27.2 (74/272) a | 22.2 (76/343) a | 11.0 (11/100) b | ||
Internal medicine diseases | 8.6 (28/324) | 7.6 (57/746) | 6.1 (28/461) | 0.372 | 4.8 (13/272) | 8.5 (29/343) | 6.0 (6/100) | 0.186 |