Table 1

The characteristics of the study participants in the 2011–2012 and 2017 studies (univariable analysis)

KhammamWarangal
20122017P values20122017P values
n (%)n (%)n (%)n (%)
Age group (years)
 40–491294 (52.1)1165 (43.0)<0.011081 (44.3)857 (32.4)<0.01
 50–59515 (20.7)682 (25.2)<0.01694 (28.5)695 (26.3)0.08
 60–69415 (16.7)533 (19.7)0.06446 (18.3)610 (23.1)<0.01
 70 and above261 (10.5)331 (12.2)0.53217 (8.9)484 (18.3)<0.01
Gender
 Male1182 (47.6)1190 (43.9)<0.011139 (46.7)1188 (44.9)0.2
 Female1303 (52.4)1521 (56.1)1299 (53.3)1458 (55.1)
Education
 No education1460 (58.8)1577 (58.2)0.671622 (66.5)1748 (66.1)0.724
 Any education1025 (41.2)1134 (41.8)816 (33.5)898 (33.9)
Cataract surgery in either eye0.010.584
 Yes250 (10.1)337 (12.4)338 (13.9)381 (14.4)
 No2235 (89.9)2374 (87.6)2100 (86.1)2265 (85.6)
Present glasses (distance only)
 Yes670 (27.0)893 (32.9)<0.01762 (31.3)736 (27.8)0.01
 No1815 (73.0)1818 (67.1)1676 (68.7)1910 (72.2)
2485 (100.0) 2711 (100.0) 2438 (100.0) 2646 (100.0)