Fig. 1From: Effect of BMI on blood value of patients on HCG day with IUI treatmentThe scatter plot of the correlation between the BMI index and hormone E2. The correlation analysis between BMI and E2 on HCG day revealed that there was a negative correlation between BMI and E2 on HCG day. The higher the BMI index, the lower the level of E2 became. The correlation coefficient was − 0.181, the partial correlation number was − 0.160, and the P-value was < 0.001. The difference was statistically significantBack to article page