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. 2013 Nov 8;31(2):185–194. doi: 10.1007/s10815-013-0129-4

Table 1.

Patient and Cycle Characteristics by Live Birth

Variables Live birth Not live birth P-value
(n = 880) (n = 1645)
Protocol
 Long protocol 630(71.59 %) 1047(63.65 %) <0.0001a
 Short protocol 218(24.77 %) 544(33.07)
 GnRH antagonist protocol 32(3.64 %) 54(3.28)
Insemination method
 IVF 603(68.52 %) 1076(65.41 %) 0.345a
 ICSI 238(27.04 %) 489(29.73 %)
 50%IVF-50%ICSI 39(4.43 %) 80(4.86 %)
Diagnosis of infertility
 Tubal factor 507(57.61 %) 889(54.04 %) 0.160a
 Male factor 175(19.89 %) 349(21.22 %)
 Endometriosis 25(2.84 %) 49(2.98 %)
 Ovarian factor 23(2.61 %) 75(4.56 %)
 Unexplained 49(5.57 %) 102(6.20 %)
 Other reasons 101(11.48 %) 181(11.0 %)
Type of infertility
 Primary infertility 445(50.57 %) 796(48.42 %) 0.303a
 Secondary infertility 435(49.43 %) 848(51.58 %)
Age(year) 30.61 ± 3.68 31.62 ± 4.17 <0.0001b
Antral follicle count 10(1–45) 9(1–40) <0.0001c
Body mass index(kg/m2) 20.98 ± 2.90 21.16 ± 2.81 0.142b
Basal serum FSH level (mIU/ml) 6.40 ± 1.96 6.46 ± 2.71 0.531b
Basal serum E2 level (pg/ml) 36.82 ± 27.57 37.48 ± 20.53 0.496b
Duration of infertility (year) 4(0.1–17) 4.5(0.4–20) <0.0001c
Mean ovarian volume(cm3) 5.55 ± 2.53 5.48 ± 2.92 0.533b
Total ovarian volume(cm3) 11.10 ± 5.06 10.95 ± 5.84 0.533b
E2 on hCG injection day(pg/ml) 3045.20 ± 1709.81 3138.55 ± 1912.16 0.226b
Progesterone on hCG injection day(ng/ml) 1.10 ± 0.63 1.28 ± 0.75 <0.0001b
LH on hCG injection day(mIU/ml) 1(0.2–19) 1.1(0.2–13.10) 0.500c
E2 on the day after hCG injection (pg/ml) 3752.90 ± 2059.67 4103.82 ± 2416.70 0.001b
Number of follicles[10,14 mm) 3(0–17) 3(0–27) 0.367c
Number of follicles[14,18 mm) 7(0–22) 6(0–21) 0.285c
Number of follicles ≥18 mm 3(0–11) 2(0–13) 0.077c
Number of follicles <10 mm 6(0–30) 5(0–25) 0.001c
Number of follicles≥14 mm 9(1–27) 9(1–29) 0.106c
Endometrial thickness(mm) 11.13 ± 5.15 10.37 ± 2.09 <0.0001b
Number of oocytes retrieved 14.74 ± 6.50 14.25 ± 6.85 0.082b
Number of oocytes fertilized 11.99 ± 5.93 11.23 ± 5.98 0.088b
Fertilization rate 0.74 ± 0.20 0.69 ± 0.22 <0.0001b
Number of embryos transferred 2.30 ± 0.48 2.31 ± 0.55 0.201b
Number of good-quality embryos transferred 1.84 ± 0.67 1.60 ± 0.86 <0.0001b
Total number of embryos 10.35 ± 5.39 9.37 ± 5.56 <0.0001b
Total number of good-quality embryos 5.14 ± 3.51 4.26 ± 3.72 <0.0001b

aPearson Chi-square

bTwo sample T test

cTwo sample Wilcoxon test