Table 5

 Best corrected visual acuity in age stratified subgroups in the rural population group and the urban population group

Age group (years)Rural groupUrban groupp Value (95% CI)
NoMean (SD)MedianNoMean (SD)Median
p Value, statistical significance of difference between the rural group and the urban group.
40–444540.97 (0.12)1.02820.98 (0.10)1.00.31 (NS) (−0.025 to 0.008)
45–493940.97 (0.15)1.03190.97 (0.14)1.00.56 (NS) (−0.027 to 0.015)
50–543430.95 (0.16)1.02570.97 (0.14)1.00.17 (NS) (−0.041 to 0.007)
55–592200.89 (0.24)03650.95 (0.14)1.00.001 (−0.096 to −0.027)
60–641880.86 (0.25)1.05420.93 (0.18)1.0<0.001 (−0.117 to −0.039)
65–691910.78 (0.28)0.803690.87 (0.23)1.0<0.001 (−0.142 to −0.050)
70–741050.68 (0.27)0.802150.78 (0.24)0.800.002 (−0.159 to −0.036)
75+770.50 (0.31)0.501060.65 (0.31)0.800.002 (−0.235 to −0.055)