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Table 1 PBAC score in both groups

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

Time Group A (N = 42) Group B (N = 68) P value
Basal
Mean ± SD 51.4 ± 9.0 48.6 ± 8.0 0.093
Range 32.0–67.0 33.0–69.0
3 months
Mean ± SD 152.8 ± 28.6 68.1 ± 10.7 < 0.001
Range 109.0–201.0 49.0–95.0
#Change (3 months – basal)
Mean ± SD 101.4 ± 30.5 19.5 ± 6.9 < 0.001
Range 61.0–163.0 6.0–41.0
P value < 0.001 < 0.001