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Table 3 Baseline uterine artery, endometrium, and sub-endometrium vascular indices

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

  Group A (N = 42) Group B (N = 68) P value
Uterine artery
PI Mean ± SD 1.77 ± 0.47 2.46 ± 0.56 < 0.001
RI Mean ± SD 0.63 ± 0.16 0.99 ± 0.20 < 0.001
Sub-endometrium
PI Mean ± SD 1.63 ± 0.35 1.78 ± 0.34 0.030
RI Mean ± SD 0.56 ± 0.12 0.79 ± 0.11 < 0.001
VI Mean ± SD 6.87 ± 1.91 2.96 ± 1.07 < 0.001
FI Mean ± SD 33.71 ± 5.32 30.10 ± 4.60 < 0.001
VFI Mean ± SD 2.33 ± 0.80 0.90 ± 0.39 < 0.001
Endometrium
VI Mean ± SD 1.06 ± 0.32 0.59 ± 0.20 < 0.001
FI Mean ± SD 24.38 ± 6.37 21.51 ± 7.06 0.034
VFI Mean ± SD 0.26 ± 0.12 0.13 ± 0.06 < 0.001