Table 1 Basic characteristics of the patients undergoing IVF/ICSI treatment
Characteristics | All cycles (n=15,012) | LBR per cycle (%) |
|---|---|---|
Demographics | ||
Maternal age, years, mean (SD)* | 31.23 (5.29) | Â |
Maternal BMI, kg/m2, mean (SD)* | 22.65 (3.26) | Â |
Fertility characteristics | ||
Basal FSH, IU/L, mean (SD)* | 7.46 (6.23) | Â |
Basal LH, IU/L, mean (SD)* | 4.58 (6.33) | Â |
Basal T, ng/ml, mean (SD)* | 10.21 (16.44) | Â |
Basal PRL, ng/ml, mean (SD)* | 23.98 (222.33) | Â |
Duration of infertility, years, mean (SD)* | 3.97 (3.20) | Â |
Infertility type, n (%)* | ||
 Primary | 8314 (55.4) | 45.4 |
 Secondary | 6695 (44.6) | 39.5 |
Male factor of infertility, n (%)* | 6193 (41.3) | 44.9 |
Tubal factor of infertility, n (%) | 8799 (58.6) | 42.2 |
Anovulation factor of infertility, n (%)* | 1714 (11.4) | 47.1 |
Unexplained infertility, n (%) | 746 (5.0) | 46.1 |
Treatment characteristics | ||
Gn dosage, IU, mean (SD)* | 1920.99 (1007.41) | Â |
Gn duration, days, mean (SD)* | 10.14 (3.35) | Â |
Cycle protocols, n (%)* | ||
 Long agonist protocol | 9579 (64.4) | 49.4 |
 Short agonist protocol | 1176 (7.9) | 28.9 |
 Antagonist protocol | 1581 (10.6) | 39.7 |
 Minimal-stimulation protocol | 940 (6.3) | 19.7 |
 Ultra-long protocol | 434 (2.9) | 52.3 |
 Other protocol | 1153 (7.8) | 23.9 |
Fertilization methods, n (%) | ||
 IVF | 10,401 (69.3) | 42.6 |
 ICSI | 4074 (27.2) | 43.7 |
 Mixed IVF ICSI | 525 (3.5) | 41.1 |
E2 on hCG day, pg/ml, mean (SD)* | 3289.68 (1915.22) | Â |
P on hCG day, ng/ml, mean (SD) | 1.21 (18.29) | Â |
Year of transfer, n (%)* | ||
 2013 | 3781 (25.2) | 39.5 |
 2014 | 3894 (25.9) | 41.7 |
 2015 | 3862 (25.7) | 44.1 |
 2016 | 3475 (23.1) | 46.2 |
Stage of embryos transferred, n (%) | ||
 Cleavage-stage embryo (D2/D3/D4) | 14,236 (94.8) | 42.8 |
 Blastocyst (D5/D6/D7) | 776 (5.2) | 43.9 |
Number of embryos transferred, n (%)* | ||
 1 | 4254 (28.3) | 29.1 |
 2 | 10,758 (71.7) | 48.2 |
Oocytes retrieved, mean (SD)* | 8.17 (4.91) | Â |