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) |