Table 1 Basic characteristics of HRT and LS groups
Characteristics | HRT group (n = 1700) | LS group (n = 2007) | P |
|---|---|---|---|
Maternal age (years) | 29.49 ± 3.58 | 29.86 ± 3.76 | 0.002 |
Maternal body mass index(kg/m2) | 22.44 ± 2.91 | 22.27 ± 2.96 | 0.033 |
Infertility duration (years) | 3.64 ± 2.44 | 3.61 ± 2.5 | 0.443 |
Gravidity | 0.67 ± 1.03 | 0.68 ± 1.04 | 0.905 |
Parity | 0.11 ± 0.34 | 0.12 ± 0.36 | 0.379 |
Cause of infertility | Â | Â | 0.177 |
Male factor | 453(29.53) | 520(26.98) | Â |
Endometriosis | 22(1.43) | 25(1.30) | Â |
Uterine factor | 258(16.82) | 295(15.31) | Â |
Tubal factor | 718(46.81) | 982(50.96) | Â |
Unexplained infertility | 83(5.41) | 105(5.45) | Â |
FSH (IU/L) | 5.28 ± 1.41 | 5.47 ± 1.47 | < 0.001 |
LH (IU/L) | 7.35 ± 6.02 | 7.19 ± 5.25 | 0.403 |
LH/FSH | 1.41 ± 1.06 | 1.34 ± 0.95 | 0.009 |
Total T (ng/mL) | 1.47 ± 6.46 | 2.41 ± 9.17 | 0.055 |
AMH (ng/mL) | 12.46 ± 6.69 | 11.13 ± 6.73 | < 0.001 |
AFC | 47.48 ± 24.6 | 48.82 ± 23.44 | 0.007 |
Menstrual cycle (days) | 57.98 ± 36.08 | 53.92 ± 28.06 | 0.144 |
P before embryo transfer(ng/ml) | 8.64 ± 3.87 | 13.64 ± 6.99 | < 0.001 |
E2 before embryo transfer(pg/ml) | 448.97 ± 674.36 | 110.79 ± 184.88 | < 0.001 |
Endometrial thickness before transfer(mm) | 11.58 ± 1.7 | 11.49 ± 1.64 | 0.353 |
Number of embryos transferred | 1.55 ± 0.5 | 1.58 ± 0.49 | 0.097 |
Quality of embryos transferred | Â | Â | 0.198 |
Good quality | 1124(66.12) | 1367(68.11) | Â |
Non-good quality | 576(33.88) | 640(31.89) | Â |
Developmental stage of embryos transferred | Â | Â | 0.010 |
Blastocyst (day 5) | 1126(66.24) | 1247(62.13) | Â |
Cleavage stage (day 3) | 574(33.76) | 760(37.87) | Â |
Phenotypes of metabolic disorder | Â | Â | Â |
IR | 1355(79.71) | 1694(84.4) | < 0.001 |
Elevation of fasting plasma glucose | 212(15.33) | 247(14.02) | 0.301 |
Elevation of blood pressure | 282(17) | 320(16.14) | 0.486 |
Central obesity | 470(27.65) | 509(25.36) | 0.116 |