Table 1.
Patient characteristics at the start of the first IVF cycle
| Characteristic | <30 years n = 1375 | 30–<35 years n = 3862 | 35–<40 years n = 4279 | 40–42 years n = 1845 |
|---|---|---|---|---|
| Age (years) | 27.9 ± 1.8 | 32.6 ± 1.4 | 37.4 ± 1.5 | 41.4 ± 0.8 |
| Body mass index (kg/m2) | 25.9 ± 6.0 | 25.2 ± 5.5 | 25.5 ± 5.4 | 25.7 ± 5.4 |
| Gravidity | ||||
| 0 | 964 (70.8) | 2320 (60.5) | 2041 (48.1) | 701 (38.2) |
| 1 | 235 (17.3) | 884 (23.0) | 1128 (26.6) | 475 (25.9) |
| ≥2 | 162 (11.9) | 633 (16.5) | 1071 (25.3) | 658 (35.9) |
| Parity | ||||
| 0 | 1203 (90.0) | 3094 (81.7) | 3014 (71.6) | 1228 (67.4) |
| 1 | 108 (8.1) | 579 (15.3) | 971 (23.1) | 439 (24.1) |
| ≥2 | 25 (1.9) | 116 (3.1) | 223 (5.3) | 156 (8.6) |
| Cycle day 3 FSH | 5.6 ± 2.6 | 6.5 ± 4.5 | 7.4 ± 4.5 | 8.0 ± 4.1 |
| Infertility diagnosisa | ||||
| Tubal factor | 194 (14.1) | 477 (12.4) | 632 (14.8) | 223 (12.1) |
| Ovulatory dysfunction | 241 (17.5) | 493 (12.8) | 297 (6.9) | 93 (5.0) |
| Diminished ovarian reserve | 4 (0.3) | 52 (1.3) | 124 (2.9) | 89 (4.8) |
| Endometriosis | 73 (5.3) | 247 (6.4) | 231 (5.4) | 67 (3.6) |
| Uterine factor | 23 (1.7) | 69 (1.8) | 106 (2.5) | 69 (3.7) |
| Male factor | 442 (32.1) | 984 (25.5) | 900 (21.0) | 304 (16.5) |
| Unexplained | 351 (25.5) | 1416 (36.7) | 1703 (39.8) | 732(9.7) |
Data are presented as mean ± standard deviation or n (%)
FSH follicle-stimulating hormone
aMultiple diagnoses may be reported