| Variable | Groups | P | |
| GnRHant Group (Group A) | GnRHa Group (Group B) | ||
| No. of total cycles |
|
|
|
| <31 years | 265 | 399 | / |
| 31 - 35 years | 295 | 368 | / |
| 36 - 40 years | 185 | 109 | / |
| >40 years | 129 | 173 | / |
| No. of cancelled cycles because of high risk of OHSS (n, %) |
|
|
|
| <31 years | 61.18% (52/85) | 76.47% (78/102) | <0.05 |
| 31 - 35 years | 33.65% (35/104) | 51.56% (33/64) | <0.05 |
| 36 - 40 years | 9.72% (7/72) | 33.33% (4/12) | <0.05 |
| >40 years | 2% (1/50) | 2.94% (1/34) | ns |
| No. of OHSS (moderate and severe; n, %) |
|
|
|
| <31 years | 2.26% (6/265) | 7.02% (28/399) | <0.05 |
| 31 - 35 years | 2.37% (7/295) | 5.98% (22/368) | <0.05 |
| 36 - 40 years | 0 | 1.83% (2/109) | <0.05 |
| >40 years | 0 | 0 | / |
| No. of IVF cycles (n, %) |
|
|
|
| <31 years | 67.17% (178/265) | 61.90% (247/399) | ns |
| 31 - 35 years | 69.15% (204/295) | 63.86% (235/368) | ns |
| 36 - 40 years | 62.70% (116/185) | 60.55% (66/109) | ns |
| >40 years | 65.89% (85/129) | 52.60% (91/173) | ns |
| No. of embryos transferred |
|
|
|
| <31 years | 1.94 ± 0.39 | 2.00 ± 0.37 | ns |
| 31 - 35 years | 1.99 ± 0.38 | 2.04 ± 0.39 | ns |
| 36 - 40 years | 2.24 ± 0.62 | 2.68 ± 0.51 | <0.05 |
| >40 years | 1.81 ± 0.39 | 2.59 ± 0.62 | <0.05 |