Table 1 Characteristics of included participants
Variables | DGC | SU | P |
|---|---|---|---|
No. of cycles | 719 | 719 | Â |
Male | |||
Age, years, mean (SD) | 33.5 (5.5) | 33.7 (5.4) | 0.509 |
BMI, kg/m2, mean (SD) | 24.1 (3.4) | 24.3 (3.4) | 0.341 |
Total sperm, ×106, median (IQR) | 87.5 (55.1–136.0) | 105.0 (70.0–156.0) | < 0.001 |
Concentration, ×106/mL,median (IQR) | 35.0 (24.0–50.0) | 43.0 (33.0–57.0) | < 0.001 |
PR, %, median (IQR) | 45.0 (38.0–55.0) | 50.0 (41.0–58.0) | < 0.001 |
Semen quality, % (n) | |||
 Normal | 73.2 (526) | 85 (611) | < 0.001 |
 Poor | 26.8 (193) | 15.0 (108) |  |
Smoking, % (n) | |||
 Never | 46.7 (336) | 44.5 (320) | 0.126 |
 Current | 22.3 (160) | 19.6 (141) |  |
 Former | 31.0 (223) | 35.9 (258) |  |
Drinking, % (n) | |||
 Never | 46.3 (333) | 44.8 (322) | 0.787 |
 Current | 23.1 (166) | 24.5 (176) |  |
 Former | 30.6 (220) | 30.7 (221) |  |
Female | |||
Age, years, mean (SD) | 31.5 (4.3) | 31.8 (4.4) | 0.111 |
BMI, kg/m2, mean (SD) | 22.3 (3.3) | 22.4 (3.4) | 0.832 |
AMH, ng/mL, % (n) | |||
  < 1.5 | 20.0 (144) | 25.6 (184) | 0.012 |
  ≥ 1.5 | 80.0 (575) | 74.4 (535) |  |
Type of infertility, % (n) | |||
 Primary | 45.6 (328) | 43.8 (315) | 0.491 |
 Secondary | 54.4 (391) | 56.2 (404) |  |
Ovarian stimulation protocol, % (n) | |||
 Agonist protocol | 54.2 (390) | 47.1 (339) | 0.005 |
 Antagonist protocol | 34.1 (245) | 36.3 (261) |  |
 Other protocols | 11.7 (84) | 16.5 (119) |  |
Retrieved oocytes, median (IQR) | 9.0 (6.0–12.0) | 9.0 (5.0–12.0) | 0.334 |
IVF/ICSI, % (n) | |||
 IVF | 87.3 (628) | 86.5 (622) | 0.639 |
 ICSI | 12.7 (91) | 13.5 (97) |  |