Table 3. PBAC score of patients (n = 668) with different self-assessed menstrual blood volume and PBAC score of ≥100.

PBAC	Hypomenorrhea		Normal		HMB
	n	Mean±SD	n	Mean±SD	n	Mean±SD
≥100	30	147.6±69.4	459	183.1±101.6	179	391.3±270.7
100–199	27	125.6±16.3	321	143.2±28.1	26	157.1±26.0
200–299	1	287	112	236.5±24.6	63	248.0±28.1
≥300	2	376.3±21.5	26	445.4±233.9	90	559.2±301.0

HMB, heavy menstrual bleeding; PBAC, Pictorial Blood Loss Assessment Chart; SD, standard deviation.