Skip to main content

Table 1 Prevalence rates of blindness, SVI, Mod VI and Mild VI by age, sex, insurance, occupation and education*

From: Visual impairment and spectacle coverage rate in Baoshan district, China: population-based study

Characteristic

 

Presenting visual acuity

Best-corrected visual acuity

 

Total n

Blind n(%;95%CI)

SVI n(%;95%CI)

Mod VI n(%;95%CI)

Mild VI n(%;95%CI)

Blind n(%;95%CI)

SVI n(%;95%CI)

Mod VI n(%;95%CI)

Mild VI n(%;95%CI)

Age,y

         

60-69

2907

14(0.48;0.23-0.73)

7(0.24;0.06-0.42)

152(5.22;4.42-6.04)

211(7.26;6.32-8.20)

10(0.34;0.13-0.56)

1(0.03;0–0.10)

37(1.27;0.87-1.68)

61(2.10;1.58-2.62)

70-79

1103

7(0.63;0.17-1.10)

6(0.54;0.11-0.98)

112(10.15;8.37-11.94)

201(18.22;15.94-20.50)

6(0.54;0.11-0.98)

2(0.18;0–0.43)

35(3.17;2.14-4.21)

87(7.89;6.30-9.48)

80~

535

18(3.36;1.84-4.89)

7(1.31;0.35-2.27)

117(21.87;18.37-25.37)

160(29.91;26.03-33.79)

14(2.62;1.26-3.97)

1(0.19;0–0.55)

67(12.52;9.72-15.33)

91(17.01;13.83-20.19)

total

4545

39(0.86;0.59-1.13)

20(0.44;0.25-0.63)

381(8.38;7.58-9.19)

572(12.59;11.62-13.55)

30(0.66;0.42-0.90)

4(0.09;0.00-0.17)

139(3.06;2.56-3.56)

239(5.26;4.61-5.91)

Age adjusted†

 

0.89(0.62-1.16)

0.48(0.28-0.68)

9.05(8.22-9.89)

14.02(13.01-15.03)

0.69(0.45-0.93)

0.11(0.01-0.20)

3.34(2.81-3.86)

6.03(5.34-6.72)

Gender

         

Male

1910

17(0.89;0.47-1.31)

4(0.21;0-0.41)

130(6.81;5.68-7.94)

185(9.69;8.36-11.01)

13(0.68;0.31-1.05)

1(0.05;0–0.15)

47(2.46;1.77-3.16)

68(3.56;2.73-4.39)

Female

2635

22(0.83;0.49-1.18)

16(0.61;0.31-0.90)

251(9.53;8.40-10.65)

387(14.69;11.34-16.04)

17(0.65;0.34-0.95)

3(0.11;0–0.24)

92(3.49;2.79-4.19)

171(6.49;5.55-7.43)

Type of insurance

         

No insurance

20

0(0;0-17.00)

0(0;0-17.00)

2(10.00;1.00-32.00)

2(10.00;1.00-32.00)

0(0;0–17.00)

0(0;0–17.00)

0(0;0–17.00)

1(5.00;0–24.00)

Urban insurance

2271

19(0.84;0.46-1.21)

11(0.48;0.20-0.77)

208(9.16;7.97-10.35)

284(12.51;11.15-13.87)

17(0.75;0.39-1.10)

1(0.04;0–0.13)

70(3.08;2.37-3.79)

127(5.59;4.65-6.54)

Others

2254

20(0.89;0.50-1.27)

9(0.40;0.14-0.66)

171(7.59;6.49-8.68)

286(12.69;11.31-14.06)

13(058;0.26-0.89)

3(0.13;0–0.28)

69(3.06;2.35-3.77)

111(4.92;4.03-5.82)

Occupation

         

Peasant

1232

14(1.14;0.54-1.73)

4(0.32;0.01-0.64)

85(6.90;5.48-8.314)

156(12.66;10.81-14.52)

10(0.81;0.31-1.31)

1(0.08;0–0.24)

31(2.52;1.64-3.39)

61(4.95;3.74-6.16)

Non-peasant

3313

25(0.75;0.46-1.05)

16(0.48;0.25-0.72)

296(8.93;7.96-9.91)

416(12.56;11.43-13.68)

20(0.60;0.34-0.87)

3(0.09;0–0.19)

108(3.26;2.66-3.86)

178(5.37;4.60-6.14)

Level of Education

         

Illiteracy

684

14(2.05;0.99-3.11)

4(0.58;0.01-1.16)

100(14.62;11.97-17.27)

149(21.78;18.69-24.88)

10(1.46;0.56-2.36)

1(0.15;0–0.43)

50(7.31;5.36-9.26)

78(11.40;9.02-13.79)

Primary school

2319

14(0.60;0.29-0.92)

14(0.60;0.29-0.92)

186(8.02;6.92-9.13)

280(12.07;10.75-13.40)

12(0.52;0.23-0.81)

3(0.13;0–0.28)

62(2.67;2.02-3.33)

113(4.87;4.00-5.75)

Secondary school or higher

1542

11(0.71;0.29-1.13)

2(0.13;0-0.31)

95(6.16;4.96-7.36)

143(9.27;7.83-10.72)

8(0.52;0.16-0.88)

0(0;0–17.00)

27(1.75;1.10-2.41)

48(3.11;2.25-3.98)

  1. *Data are given as numbers of persons (prevalence percentage; 95% confidence interval).
  2. †Age adjusted to the 2000Shanghai census population. Data are given as prevalence percentage (95% confidence interval).