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Table 2 Uterine artery, endometrium, and sub-endometrium vascular indices

From: Doppler ultrasound for prediction of IUCD-induced heavy menstrual bleeding: a prospective cohort study

  Basal Month 3 #Change P value
Uterine artery
PI Mean ± SD 2.20 ± 0.63 2.09 ± 0.61 − 0.11 ± 0.03 < 0.001
RI Mean ± SD 0.85 ± 0.25 0.81 ± 0.25 − 0.04 ± 0.01 < 0.001
Sub-endometrium
PI Mean ± SD 1.72 ± 0.35 1.63 ± 0.34 − 0.09 ± 0.03 < 0.001
RI Mean ± SD 0.70 ± 0.16 0.67 ± 0.16 − 0.03 ± 0.01 < 0.001
VI Mean ± SD 4.45 ± 2.39 4.71 ± 2.59 0.26 ± 0.21 < 0.001
FI Mean ± SD 31.47 ± 5.17 33.11 ± 5.65 1.64 ± 0.71 < 0.001
VFI Mean ± SD 1.45 ± 0.90 1.62 ± 1.05 0.17 ± 0.15 < 0.001
Endometrium
VI Mean ± SD 0.77 ± 0.34 0.81 ± 0.37 0.04 ± 0.03 < 0.001
FI Mean ± SD 22.61 ± 6.92 23.81 ± 7.34 1.21 ± 0.59 < 0.001
VFI Mean ± SD 0.18 ± 0.11 0.20 ± 0.12 0.02 ± 0.02 < 0.001