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Table 3 Comparison of outcomes among Peak EST groups for all patients treated

From: The association between endometrial thickness and pregnancy outcome in gonadotropin-stimulated intrauterine insemination cycles

Models:   Outcomes P-value
Clinical Pregnancy P-value Conception
estimate (se) estimate (se)
Piece-wise linear Model** Peak EST (peak EST < 14) 0.32 (0.17) 0.06 0.37 (0.16) 0.022
Peak EST (Peak EST > =14) −0.94 (0.69) 0.17 −1.27 (0.68) 0.06
Multiple logistic regression model ***   Adjusted OR(95%CI) P-value Adjusted OR(95%CI) P-value
Group 1 vs 3 0.44(0.16,1.21) 0.11 0.61(0.23,1.58) 0.31
Group 2 vs 3 0.77(0.52,1.14) 0.2 0.69(0.48,0.99) 0.046
ref, Group 3 1   1  
Group 4 vs 3 0.6(0.19,1.94) 0.39 0.46(0.15,1.38) 0.16
  1. **Multivariable piecewise linear model with change point at peak EST = 14
  2. ***: The adjusted OR (95%CI) were determined based on Multiple logistic regression model for the outcomes with GEE approach to account for the clustering of cycles for the same patient
  3. For both models, the potential confounders adjusted for were age, dominant follicles, motile sperm count, and peak estrogen
  4. Group 1: peak EST < 7 (mm); Group 2: peak EST: 7–10.4 (mm); peak EST: 10.5–13.9 (mm); Group 4: peak EST > =14 (mm)