Table 2.

Result of demographic statistics analysis (N = 293).

Variable	Category	Number of people	Percentage (%)
Gender	Male	145	49.5
	Female	148	50.5
Age	Under 25	106	36.2
	25–40 years old	135	46.0
	Over 40 years old	52	17.8
Area	East China	67	22.9
	North China	33	11.3
	Northeast China	23	7.9
	Central China	42	14.3
	South China	37	12.6
	Southwest China	49	16.7
	Northwest China	42	14.4
Education level	Below undergraduate	114	38.9
	Undergraduate	91	31.1
	Master's degree and above	88	30.1
Monthly income level	Under 5,000	142	48.5
	5,000–10,000	79	26.9
	Over 10,000	72	24.6