Variables | Group1 | Group2 | Group3 | Group4 | P value |
---|---|---|---|---|---|
(N = 427) | (N = 864) | (N = 769) | (N = 374) | ||
Age (years) | 35.86 ± 5.79 | 32.54 ± 5.47 | 30.85 ± 5.13 | 30.93 ± 4.66 | < 0.01 |
Duration of infertility (years) | 5.17 ± 4.70 | 4.37 ± 3.50 | 4.41 ± 3.58 | 4.23 ± 3.35 | 0.000804 |
Clinical protocol | < 0.01 | ||||
Long agonist protocol | 123 (28.8%) | 499 (57.8%) | 548 (71.3%) | 271 (72.5%) | |
Short agonist protocol | 63 (14.8%) | 163 (18.9%) | 105 (13.7%) | 52 (13.9%) | |
Prolonged agonist protocol | 6 (1.4%) | 12 (1.4%) | 13 (1.7%) | 9 (2.4%) | |
Other | 235 (55.0%) | 190 (22.0%) | 103 (13.4%) | 42 (11.2%) | |
Embryo transferred | 0.53 ± 0.81 | 0.87 ± 0.92 | 1.05 ± 0.93 | 1.07 ± 0.92 | < 0.01 |
Progesterone(ng/ml) | 1.49 ± 2.87 | 1.51 ± 3.05 | 1.24 ± 1.29 | 1.18 ± 1.60 | 0.0352 |
Clinical pregnancy | 32 (7.5%) | 161 (18.6%) | 214 (27.8%) | 132 (35.2%) | < 0.01 |