Different Bleeding Patterns with the Use of Levonorgestrel Intrauterine System: Are They Associated with Changes in Uterine Artery Blood Flow?

Table 1

Women clinical and gynecological characteristics.

	Number	%
Age
<30	4	12.5
30–40	16	50.0
>40	12	37.5
Parity
Nulliparous	4	12.5
Parous	28	87.5
Patterns of menstrual bleeding
PBAC SCORE*	338 (±182 SD**)	NA
Previous contraceptive method used
Oral hormonal	12	37.5
Intrauterine (IUD***)	5	15.6
Barrier (condom)	15	46.8

∗PBAC: Pictorial Blood Assessment Chart Score
**SD: Standard deviation
***IUD: intrauterine device