“…The predisposing variables were the individual characteristics of people who tend to use inpatient services before the onset of the diseases [27,30,31], including gender (female, male), age (45~59, 60~74, 75+), education level (illiterate, primary school, middle school, high school and above), marital status (married, unmarried) and employment status (unemployed, agricultural work, working in units, other working).…”