Table 1.

Participants’ characteristics (N = 431).

Variables	Classification	Number (n)	Proportion (%)	Mean (SD)
Age (years)	<60	208	48.26	58.74 (11.63)
	≥60	223	51.74
Gender	Male	170	39.44
	Female	261	60.56
Marriage	None or others	30	6.96
	Married	401	93.04
Employment status	Employed	150	34.80
	Retired	281	65.20
Education background	Elementary school and below	117	27.15
	Middle school and above	314	72.85
Individual monthly income (CNY)	≤2000	229	53.13
	>2000	202	46.87
Medical insurance	Urban employee or residential insurance	279	64.73
	Cooperative medical scheme or others	152	35.27
Duration of diabetes (year)	≤5	194	45.01
	>5	237	54.09
Diabetes complication	Yes	164	38.05
	No or unclear	267	61.95

CNY, Chinese Yuan; SD, standard deviation.