Table 2 Comparison of baseline characteristics and frozen-thawed embryo transfer cycle information of three groups after matching
Characteristics | Matched I | Matched II | Matched III | ||||||
|---|---|---|---|---|---|---|---|---|---|
HRT (n = 394) | NC (n = 194) | P value | HRT (n = 272) | OS(n = 136) | P-value | NC (n = 109) | OS (n = 109) | P value | |
Age of the woman (years, mean ± SD) | 30.09 ± 3.30 | 30.33 ± 3.37 | 0.411 | 29.94 ± 2.97 | 29.92 ± 3.02 | 0.953 | 29.85 ± 3.32 | 29.84 ± 3.09 | 0.983 |
Age of the man (years, mean ± SD) | 31.74 ± 3.98 | 31.85 ± 3.54 | 0.745 | 31.29 ± 3.53 | 31.34 ± 3.66 | 0.907 | 31.18 ± 3.43 | 31.33 ± 3.96 | 0.770 |
BMI (kg/m 2,mean ± SD) | 21.56 ± 2.99 | 21.45 ± 2.59 | 0.665 | 22.50 ± 3.61 | 22.72 ± 3.29 | 0.550 | 22.12 ± 2.80 | 22.05 ± 2.90 | 0.856 |
Regular pattern of menstruation, n(%) | 352 (89.34) | 179 (90.86) | 0.665 | 171 (62.87) | 88 (64.71) | 0.799 | 92 (84.40) | 88 (80.73) | 0.592 |
Type of infertility, n(%) | 0.929 | 0.803 | 0.780 | ||||||
Primary | 159 (40.36) | 78 (39.59) | 111 (40.81) | 53 (38.97) | 43 (39.45) | 40 (36.70) | |||
Secondary | 235 (59.64) | 119 (60.41) | 161 (59.19) | 83 (61.03) | 66 (60.55) | 69 (63.30) | |||
Infertility factors, n(%) | 0.196 | 0.667 | 0.644 | ||||||
Female factor | 223 (56.60) | 99 (50.25) | 175 (64.34) | 84 (61.76) | 54 (49.54) | 59 (54.13) | |||
Male factor | 95 (24.11) | 64 (32.49) | 45 (16.54) | 29 (21.32) | 33 (30.28) | 29 (26.61) | |||
Bilateral factor | 38 (9.64) | 17 (8.63) | 32 (11.76) | 15 (11.03) | 10 (9.17) | 13 (11.93) | |||
Unexplained | 38 (9.64) | 17 (8.63) | 20 (7.35) | 8 (5.88) | 12 (11.01) | 8 (7.34) | |||
Years of infertility (years, mean ± SD) | 3.41 ± 2.18 | 3.37 ± 2.28 | 0.834 | 3.26 ± 2.08 | 3.35 ± 2.19 | 0.663 | 3.05 ± 2.08 | 3.38 ± 2.31 | 0.278 |
Basal FSH(U/L, mean ± SD) | 6.52 ± 1.84 | 6.49 ± 2.09 | 0.885 | 6.17 ± 1.78 | 6.19 ± 1.81 | 0.929 | 6.24 ± 2.03 | 6.20 ± 1.64 | 0.875 |
Basal LH (U/L, mean ± SD) | 6.59 ± 8.53 | 6.39 ± 10.17 | 0.798 | 5.94 ± 3.47 | 5.78 ± 4.07 | 0.685 | 5.51 ± 4.91 | 5.44 ± 3.98 | 0.913 |
AFC (n, mean ± SD) | 16.90 ± 6.42 | 16.43 ± 4.88 | 0.364 | 19.00 ± 7.10 | 18.43 ± 6.33 | 0.435 | 16.81 ± 4.88 | 17.09 ± 6.03 | 0.702 |
Protocol in fresh cycle, n(%) | 0.736 | 0.292 | 0.594 | ||||||
Follicular-phase depot GnRH agonist | 127 (32.23) | 59 (29.95) | 118 (43.38) | 52 (38.24) | 33 (30.28) | 36 (33.03) | |||
Mid-luteal GnRH agonist | 159 (40.36) | 86 (43.65) | 70 (25.74) | 45 (33.09) | 38 (34.86) | 42 (38.53) | |||
Antagonist | 108 (27.41) | 52 (26.40) | 84 (30.88) | 39 (28.68) | 38 (34.86) | 31 (28.44) | |||
Fertilization type, n(%) | 1.000 | 1.000 | 0.874 | ||||||
IVF | 321 (81.47) | 161 (81.73) | 222 (81.62) | 111 (81.62) | 82 (75.23) | 84 (77.06) | |||
ICSI | 73 (18.53) | 36 (18.27) | 50 (18.38) | 25 (18.38) | 27 (24.77) | 25 (22.94) | |||
Gn time of use (d, mean ± SD) | 10.38 ± 2.01 | 10.30 ± 1.96 | 0.683 | 10.61 ± 2.12 | 10.54 ± 2.15 | 0.755 | 10.41 ± 2.06 | 10.27 ± 1.68 | 0.565 |
Gn dosage (U, mean ± SD) | 1858.66 ± 673.85 | 1863.97 ± 665.70 | 0.928 | 1946.19 ± 750.44 | 1941.27 ± 827.32 | 0.952 | 1950.94 ± 699.34 | 1900.11 ± 731.45 | 0.601 |
Trigger day E2 value (ng/L, mean ± SD) | 5934.80 ± 2390.08 | 5986.06 ± 2572.71 | 0.811 | 5499.41 ± 2382.22 | 5436.10 ± 2656.40 | 0.808 | 5660.43 ± 2497.75 | 5514.87 ± 2668.19 | 0.678 |
No. of oocyte retrieved(n, mean ± SD) | 19.64 ± 6.14 | 19.50 ± 5.86 | 0.792 | 20.08 ± 6.36 | 20.10 ± 6.45 | 0.974 | 19.39 ± 5.64 | 19.88 ± 5.85 | 0.533 |