Table 1. Demographic characteristics of the health students in the validation study (n=275)

Demographic factor	Frequency	Percentage
Age (year)	21.95±0.571)
21	42	15.28
22	213	77.45
23	15	5.45
≥24	5	1.82
Gender
Woman	167	60.73
Man	108	39.27
Ethnicity
Kinh	260	94.55
Hoa	9	3.27
Cham	2	0.73
Nung	2	0.73
Khmer	1	0.36
Thai	1	0.36
Major and study year
4th year pharmacy student	114	41.45
4th year medical student	112	40.73
3rd year nursing student	33	12.0
3rd year rehabilitation science student	16	5.82

Mean±SD.