Table 1. Characteristics of participants

Characteristic	Participants for construct validity (n = 200)			Participants for test–retest reliability (n = 27)
	Mean (SD)	n	%	Mean (SD)	n	%
Age	54.1 (2.95)			54.2 (2.90)
Age group
50-55		129	64.5		19	70.4
>55-59		71	35.5		8	29.6
Ethnicity
Kinh (Vietnamese)		200	100.0		27	100.0
Religion
No religion		146	73.0		23	85.2
Buddhist		47	23.5		4	14.8
Christian		7	3.5		0	0
Marital status
Single		1	0.5		0	0
Married		193	96.5		26	96.3
Divorced		1	0.5		1	3.7
Widow		5	2.5		0	0
Level of education
Able to read and write		6	3.0		0	0
Primary school		38	19.0		6	22.2
Junior high school		103	51.5		15	55.6
Senior high school		42	21.0		5	18.5
Higher education		11	5.5		1	3.7
Occupation
Housewife		137	68.5		19	70.4
Small business owner		36	18.0		8	29.6
Factory worker		22	11.0		0	0
Office worker		3	1.5		0	0
Farmer		2	1.0		0	0
Socio-economic status
Very low income		1	0.5		0	0
Low to middle income		197	98.5		26	96.3
High income		2	1.0		1	3.7
Menopausal status
Pre-menopause		58	29.0		9	33.3
Menopause		42	21.0		6	22.2
Post-menopause		100	50.0		12	44.5