Table 3

Effect of sociodemographic factors on the prevalence of corneal blindness by logistic regression analysis

Risk factorsCorneal blindp ValueUnadjusted OR (95% CI)Adjusted OR (95% CI)
No
(n=12 046)
Yes
(n=67)
Prevalence
% (95% CI)
p Valuep Value
Age (years)<0.001*
 <6011 093230.21 (0.12 to 0.29)1.01.0
 ≥60953444.41 (3.14 to 5.69)22.27 (13.39 to 37.03)<0.001*4.70 (2.38 to 9.26)<0.001*
Gender0.046*
 Male6147260.42 (0.26 to 0.58)1.01.0
 Female5899410.69 (0.48 to 0.90)1.64 (1.00 to 2.69)0.048*1.13 (0.58 to 2.19)0.720
Education<0.001*
 Up to primary†5655550.96 (0.71 to 1.22)1.01.0
 Above primary (>Std. 5)6391120.19 (0.08 to 0.29)0.19 (0.10 to 0.36)<0.001*0.30 (0.15 to 0.62)0.001*
Occupation<0.001*
 Housework3324250.75 (0.45 to 1.04)1.01.0
 Agricultural work65120.31 (0.12 to 0.73)0.41 (0.10 to 1.73)0.2240.58 (0.12 to 2.75)0.505
 Non-agricultural work115660.52 (0.10 to 0.93)0.69 (0.28 to 1.69)0.4161.38 (0.47 to 3.99)0.584
 Indoor work107820.19 (0.07 to 0.44)0.25 (0.06 to 1.04)0.0570.73 (0.15 to 3.53)0.679
 Not working/retired637314.64 (3.04 to 6.24)6.47 (3.79 to 11.03)<0.001*2.81 (1.41 to 5.59)0.003*
 Students and children‡520010.02 (0.01 to 0.06)0.03 (0.01 to 0.19)<0.001*0.04 (0.01 to 0.32)0.002*
  • *Statistically significant difference between groups.

  • †Includes participants educated up to class 5 of formal schooling and people who could read and write.

  • ‡Includes children <7 years of age.