Table 3 Binary logistic regression analysis to account for confounding variables of low birth weight
Item AOR (95% CI) P value
Age 0.97(0.90~1.04) 0.31
Body mass index 0.91(0.84~0.99) 0.03
Type of infertility (primary/ secondary) 1.66(0.93~2.93) 0.09
Infertility diagnosis (tubal/male/ others) 1.11(0.82~1.50) 0.52
Method of ART (IVF/ICSI) 1.06(0.59~1.92) 0.74
COH protocols (GnRH-a protocol /GnRH-anti protocol) 1.21(0.90~1.62) 0.22
The serum estradiol on the trigger day (<4000 pg/ml≥4000 pg/ml) 1.87(1.16~2.21) 0.03
EMT (mm) <0.001
7.6~12.0 1
>12.0 0.90(0.51~1.59) 0.72
≤7.5 4.39(1.85~10.46) <0.001
Gestational weeks 0.37(0.32~0.42) <0.001
Gender of newborn (male/ female) 1.99(1.19~3.33) 0.01
Note: Variable entered in the logistics regression model listed. AOR, adjusted odds ratio; CI, confidence interval. EMT, endometrial thickness Note: Variable entered in the logistics regression model listed. AOR, adjusted odds ratio; CI, confidence interval. EMT, endometrial thickness Note: Variable entered in the logistics regression model listed. AOR, adjusted odds ratio; CI, confidence interval. EMT, endometrial thickness