No Cataract Cataract No Surgery Cataract Surgery  
    n (%) n (%) n (%) P-value1
Sex Women 87 (27.2%) 174 (54.4%) 59 (18.4%) =0.813
  Men 72 (26.7%) 153 (56.7%) 45 (16.7%)  
Age 65 - 69 81 (45.5%) 84 (47.2%) 13 (7.3%) <0.001
  70 - 74 48 (26.2%) 108 (59.0%) 27 (14.8%)  
  75 -79 24 (19.4%) 74 (59.7%) 26 (21.0%)  
  80 -100 6 (5.7%) 61 (58.1%) 38 (36.2%)  
ARM Yes 76 (25,9%) 178 (60,8%) 39 (13,3%) =0.008
  No 81 (29,8%) 133 (48,9%) 58 (21,3%)  
  Missing value 2 16 7  
Smoking Never 99 (28.0%) 193 (54.5%) 62 (17.5%) =0.896
  Past 39 (26.0%) 87 (58.0%) 24 (16.0%)  
  Current 21 (25.0%) 46 (54.8%) 17 (20.2%)  
  Missing value 0 1 1  
Physical activity Sedentary 16 (15.8%) 60 (59.4%) 25 (24.8%) =0.009
  A little active 106 (27.2%) 217 (55.8%) 66 (17.0%)  
  Active 37 (37.0%) 50 (50.0%) 13 (13.0%)  
Obesity No 105 (28.0%) 202 (53.9%) 68 (18.1%) =0.600
  Yes 54 (25.1%) 125 (58.1%) 36 (16.7%)  
Diabetes Yes 28 (25.0%) 60 (53.6%) 24 (21.4%) =0.514
  No 129 (27.2%) 266 (56.0%) 80 (16.8%)  
  Missing value 2 1 0  
Hypertension Yes 64 (24.7%) 150 (57.9%) 45 (17.4%) =0.150
  No 94 (28.9%) 173 (53.2%) 58 (17.8%)  
  Missing value 1 4 1  
Previous Stroke Yes 6 (16.2%) 21 (56.8%) 10 (27.0%) =0.125
  No 152 (27.8%) 303 (55.4%) 92 (16.8%)  
  Missing value 1 3 2  
Previous Heart attack Yes 10 (26.3%) 23 (60.5%) 5 (13.2%) =0.713
  No 149 (27.2%) 300 (54.8%) 98 (17.9%)  
  Missing value 0 4 1  
1Pearson chi-square test
Table 1: Baseline characteristics among cataract surgery, cataract no surgery and no cataract subjects.