Table 2.

Characteristics of respondents.

Respondent and characteristics			Value
Medical staff (n=39)
	Age (years), mean (SD)		39.67 (6.98)
	Institution level, n (%)
		Municipal eye disease control center	1 (2.56)
		District-level eye disease control center	15 (38.46)a
		Community health service center	23 (58.97)
	Position, n (%)
		Institution leader	7 (17.95)
		Department leader	22 (56.41)
		Eye disease screening mainstay	10 (25.64)
	Years in the current position, mean (SD)		6.73 (5.76)
Resident (n=318)
	Age (years), mean (SD)		68.62 (6.96)
	Sex, n (%)
		Male	120 (37.74)
		Female	198 (62.26)
	Education level, n (%)
		Junior high school and below	216 (67.92)
		Senior high school	72 (22.64)
		Junior college	21 (6.6)
		Undergraduate and above	9 (2.83)
	Eye disease, n (%)
		Suspected	73 (22.96)
		None	245 (77.04)

^aOne respondent from a district-level eye disease control center quit the experiment because of temporary work arrangements. Therefore, although 16 district-level eye disease control centers were included in our study, only 15 key persons from these institutions finished the questionnaire.