Table 2.

Distribution of selected characteristics by history of menopausal symptoms among controls

Characteristics	Never had menopausal symptoms (n=51)	Ever had menopausal symptoms, but not severe symptoms (n=214)	Ever had severe symptoms (n=180)
	n (%)	n (%)	n (%)
Age (years)
55–59	12 (23.5)	54 (25.2)	63 (35.0)
60–64	6 (11.8)	59 (27.6)	50 (27.8)
65–69	14 (27.4)	51 (23.8)	44 (24.4)
70–74	19 (37.3)	50 (23.4)	23 (12.8)
First-degree family history of breast cancer
No	37 (80.4)	173 (82.8)	152 (87.4)
Yes	9 (19.6)	36 (17.2)	22 (12.6)
BMI (kg/m2)
<23.4	13 (25.5)	55 (25.9)	44 (24.4)
23.4–26.4	14 (27.5)	62 (29.3)	37 (20.6)
26.5–31.0	17 (33.3)	50 (23.6)	44 (24.4)
≥31.1	7 (13.7)	45 (21.2)	55 (30.6)
Recency of alcohol consumption
Never users	21 (41.2)	69 (32.7)	77 (43.0)
Former users	8 (15.7)	33 (15.6)	26 (14.5)
Current users	22 (43.1)	109 (51.7)	76 (42.5)
<1 drinks/day	6 (27.3)	23 (21.1)	14 (18.4)
≥1 drink/day	16 (72.7)	86 (78.9)	62 (81.6)
Type of menopause
Natural	22 (43.1)	136 (63.6)	98 (54.5)
Induced	16 (31.4)	26 (12.1)	33 (18.3)
Simple hysterectomy	13 (25.5)	52 (24.3)	49 (27.2)
Age at menopause (years)
<45	9 (26.5)	19 (12.3)	28 (22.0)
45–54	20 (58.8)	109 (70.8)	73 (57.5)
≥55	5 (14.7)	26 (16.9)	26 (20.5)
Recency of menopausal hormone therapy use
Never	15 (29.4)	48 (22.4)	24 (13.3)
Former	15 (29.4)	58 (27.1)	50 (27.8)
Current unopposed estrogen	16 (31.4)	58 (27.1)	67 (37.2)
Current estrogen+progestin	5 (9.8)	50 (23.4)	39 (21.7)
Duration of hormone therapy use(years)
Never	15 (29.4)	48 (22.4)	24 (13.3)
<1	4 (7.8)	20 (9.4)	12 (6.7)
1–4	9 (17.7)	31 (14.5)	32 (17.8)
5–9	3 (5.9)	46 (21.5)	38 (21.1)
10–14	2 (3.9)	26 (12.1)	25 (13.9)
≥15	18 (35.3)	43 (20.1)	49 (27.2)