Table 2.

Cataract surgery for each ethnic group by age, gender, and education

Variables	Han ethnicity			Bai ethnicity			Yi ethnicity			Total
	Examined	Post-operative persons		Examined	Post-operative persons		Examined	Post-operative persons		Examined	Post-operative persons
	No. (%)	No.	%(95% CI)	No. (%)	No.	%(95% CI)	No. (%)	No.	%(95% CI)	No. (%)	No.	%(95% CI)
Age(years)
50–59	712 (32.3)	8	1.1 (0.4–1.9)	715 (33.5)	7	1.0 (0.3–1.7)	690 (31.3)	11	1.6 (0.7–2.5)	2117 (32.3)	26	1.2 (0.8–1.7)
60–69	755 (34.2)	43	5.7 (4.0–7.4)	775 (36.3)	21	2.7 (1.6–3.9)	814 (36.9)	32	3.9 (2.6–5.3)	2344 (35.8)	96	4.1 (3.3–4.9)
70–79	560 (25.4)	63	11.3 (8.6–13.9)	525 (24.5)	50	9.5 (7.0–12.0)	567 (25.7)	83	14.6 (11.7–17.6)	1652 (25.2)	196	11.9 (10.3–13.4)
80+	178 (8.1)	28	15.7 (10.4–21.1)	118 (5.5)	21	17.8 (10.0–24.7)	137 (6.2)	28	20.4 (13.7–27.2)	433 (6.6)	77	17.8 (14.1–21.4)
Gender
Male	884 (40.1)	54	6.1 (4.5–7.7)	769 (36.1)	35	4.6 (3.1–6.0)	950 (43.0)	52	5.5 (4.0–6.9)	2603 (39.8)	141	5.4 (4.6–6.3)
Female	1321 (59.9)	88	6.7 (5.3–8.0)	1364 (63.9)	64	4.7 (3.6–5.8)	1258 (57.0)	102	8.1 (6.6–9.6)	3943 (60.2)	254	6.4 (5.7–7.2)
Education (years)
0	1188 (53.9)	103	8.7 (7.1–10.3)	759 (35.6)	53	3.4 (1.8–4.9)	1142 (51.7)	112	9.8 (8.1–11.5)	3089 (47.2)	268	8.7 (7.7–9.7)
1–6	742 (33.7)	27	3.6 (2.3–5.0)	868 (40.7)	29	3.3 (2.2–4.5)	763 (34.6)	34	4.5 (3.0–5.9)	2373 (36.3)	90	3.8 (3.0–4.6)
> 6	275 (12.5)	12	4.4 (2.0–6.8)	506 (23.7)	17	7.0 (5.2–8.8)	303 (13.7)	8	2.6 (0.8–4.5)	1084 (16.6)	37	3.5 (2.4–4.6)
Total	2205 (100)	142	6.4 (5.4–7.5)	2133 (100)	99	4.6 (3.8–5.5)	2208 (100)	154	7.0 (5.9–8.0)	6546 (100)	395	6.0 (5.5–6.6)

CI Confidence Interval