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Table 5 Univariate analysis of the prevalence of infectious corneal diseases

From: Prevalence of infectious keratitis in Central China

Characteristic No. of examined participants Corneal disease χ2 Infectious keratitis χ2
No. (%, 95% CI) P No. (%, 95% CI) P
Gender    28.794   2.765
<0.001 0.096
Male 12 942 65 (0.50, 0.38-0.62)   14 (0.11, 0.05-0.17)  
Female 13 363 146 (1.09, 0.91-1.27)   25 (0.19, 0.12-0.26)  
Age (years) 3 cases missing   281.000   48.333
<0.001 <0.001
≤14 2029 1 (0.05, 0.04-0.06)   0  
15-59 19 196 74 (0.39, 0.30-0.48 )   12 (0.06, 0.03-0.09)  
≥60 5077 136 (2.68, 2.24-3.12 )   27 (0.53, 0.33-0.73)  
Education 11 cases missing   235.300   22.485
<0.001 <0.001
None 2486 75 (3.02, 2.35-3.69)   13 (0.52, 0.24-0.80)  
Primary 6388 86 (1.35, 1.21-1.49)   12 (0.19, 0.08-0.30)  
High school 12 230 37 (0.30, 0.20-0.40)   8 (0.07, 0.02-0.12)  
College 3141 9 (0.29, 0.10-0.48)   4 (0.13, 0.01-0.25 )  
Postgraduate 2049 4 (0.20, 0.01-0.39)   2 (0.10, -0.04-0.24 )  
Area    62.691   3.960
<0.001 0.047
Urban area 11 577 36 (0.31, 0.21-0.41)   11 (0.10, 0.04-016)  
Rural area 14 728 175 (1.19,1.01-1.37)   28 (0.19, 0.12-0.26)  
  1. Corneal disease presented in higher prevalence in the female gender, rural areas and those receiving less education, and the prevalence increased with age.