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Table 3 Correlation between uterine arteries resistance index, pulsatility index, systolic/diastolic ratios, endometrial thickness, and age of the participants in (fertile) control group

From: Role of uterine artery Doppler in assessment of unexplained infertility

  Resistance index Pulsatility index Systolic/diastolic ratio Endometrial thickness
r p value r p value r p value r p value
Age (years) 0.085# 0.656 0.259& 0.167 0.311& 0.094 − .260 0.166#
  1. #Spearman correlation coefficient test is used
  2. &Pearson’s correlation coefficient test is used