Table 4.

The demographic data of main testing respondents.

Demographics		Total (N = 384)
		Frequency	Percent (%)
Gender	Male	129	33.59
	Female	255	66.41
Nationality	Thai	384	100
Age (years)	18–20	22	5.73
	21–30	99	25.78
	31–40	104	27.08
	41–50	112	29.17
	51–60	30	7.81
	Greater than 60	17	4.43