Table 2 Summary of the distribution of all cases (n = 600) according to participation
From: Predicting participation of people with impaired vision in epidemiological studies
Characteristic | Participants (n = 325) | Non-participants (n = 275) n (%) | p-value (χ2) | |
|---|---|---|---|---|
Immediate (n = 241) n (%) | Late (n = 84) n (%) | |||
Gender | < 0.001 | |||
Male | 183 (75.9) | 42 (50) | 114 (41.4) | |
Female | 58 (24.1) | 42 (50) | 161 (58.6) | |
Age group | 0.00535 | |||
< 20 yrs | 10 (4.1) | 2 (2.4) | 2 (0.7) | |
20 to < 30 yrs | 2 (0.8) | 4 (4.8) | 2 (0.7) | |
30 to < 40 yrs | 14 (5.8) | 13 (15.5) | 1 (0.4) | |
40 to < 50 yrs | 27 (11.2) | 7 (8.3) | 9 (3.3) | |
50 to < 60 yrs | 43 (17.8) | 9 (10.7) | 30 (10.9) | |
60 to < 70 yrs | 64 (26.6) | 16 (19) | 57 (20.7) | |
≥ 70 yrs | 81 (33.7) | 33 (39.3) | 174 (63.3) | |
Number of Hospital Appointments per year | < 0.001 | |||
Low - AHA (≤4×/yr) | 42 (17.4) | 10 (11.9) | 121 (44) | |
Medium - AHA (5 to 9×/yr) | 70 (29) | 16 (19) | 92 (33.5) | |
High – AHA (≥ 10×/yr) | 129 (53.6) | 58 (69) | 62 (22.5) | |
Marital Status | < 0.001 | |||
Married | 75 (31.1) | 35 (41.7) | 151 (54.9) | |
Living together | 76 (31.5) | 0 (0) | 9 (3.3) | |
Single | 35 (14.5) | 21 (25) | 26 (9.5) | |
Widow | 25 (10.4) | 23 (27.3) | 83 (30.2) | |
Divorced | 30 (12.4) | 5 (6) | 6 (2.1) | |
Visual Acuity (decimal scale) | < 0.001 | |||
0 | 18 (7.5) | 8 (9.5) | 16 (5.8) | |
0.1 | 28 (11.6) | 23 (27.4) | 29 (10.5) | |
0.2 | 33 (13.7) | 10 (11.9) | 62 (22.5) | |
0.3 | 31 (12.9) | 4 (4.8) | 52 (18.9) | |
0.4 | 47 (19.5) | 16 (19) | 66 (24) | |
0.5 | 84 (34.8) | 23 (27.4) | 50 (18.3) | |
Aetiology of visual impairment(*) | 0.4336 | |||
Age-related Macular Degeneration | 18 (7.5) | 13 (15.5) | 45 (16.4) | |
Diabetic retinopathy | 87 (36.1) | 23 (27.4) | 81 (29.5) | |
Glaucoma | 17 (7.1) | 9 (10.7) | 34 (12.4) | |
Other | 58 (24.1) | 23 (27.4) | 68 (24.7) | |
Multiple or undefined | 124 | |||