Table 1. Demographics of the participating patients (n = 438).

Demographic characteristics	Percentage (%)
Gender
Male	68.16
Female	31.84
Age
≤20	13.95
20∼40	40.90
40∼60	35.93
≥60	9.22
Education Level
Junior high school or lower	33.10
Senior high school	40.28
College or higher	26.62
Marital Status
Unmarried	36.24
Married	59.06
Divorce or Widowed	4.71