Table 1 Baseline characteristics of group I (male partner age < 40 years) and group II (male partner ≥ years)
Group I (< 40 years) (n = 556) (%) (reference group) | Group II (≥ 40 years) (n = 214) (%) | P value | |
|---|---|---|---|
Mean female age (years)* | 31.08 (3.8) | 35.14 (3.4) | 0.01# |
Mean female BMI* | 25.04 (3.9) | 26.62 (4.7) | 0.01# |
Previous parity | 31/556 (5.6) | 32/214 (15.0) | 0.02# |
H/o smoking | 85/556 (15.3) | 29/214 (13.5) | 0.67 |
Primary infertility | 365/556 (65.6) | 119/214 (55.6) | 0.01# |
Indication—tubal factor | 141/556 (25.3) | 50/214 (23.3) | 0.05 |
No. of oocytes retrieved† | 9 (6, 14) | 8 (5, 13) | 0.01# |
ICSI cycles | 325/556 (58.4) | 143/214 (66.8) | 0.06 |
Day of transfer | |||
Cleavage stage | 411/556 (73.9) | 167/214 (78.1) | 0.45 |
Blastocyst stage | 145/556 (26.1) | 47/214 (21.9) | |
No. of embryos transferred† | 2 (2, 3) | 2 (2, 3) | 0.43 |
Type of transfer | |||
Fresh transfer | 417/556 (75) | 183/214 (85.5) | 0.02# |
Frozen transfer | 139/556 (25) | 31/214 (14.5) | |