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Table 4 Summary of multiple linear regression analyses for parameters associated with P/E2 ratio

From: Reproducibility and clinical significance of pre-ovulatory serum progesterone level and progesterone/estradiol ratio on the day of human chorionic gonadotropin administration in infertile women undergoing repeated in vitro fertilization cycles

Parameter

B

SE (B)

β

Sig.(p)

Age (years)

0.003

0.014

0.012

0.818

Body mass index (kg/m2)

0.023

0.020

0.055

0.256

Number of gonadotrophin ampoules used

−0.009

0.005

−0.106

0.099

Duration of stimulation (day)

0.156

0.039

0.238

< 0.001

Number of oocytes retrieved

−0.051

0.016

−0.166

0.002

Endometrium thickness (mm)

−0.049

0.019

−0.123

0.012

R2

0.086

   

F

6.396*

   
  1. * P < 0.001