Table 1 Summary of the distribution of 600 subjects included in the analysis. Among 600, 325 are participants a (immediate or late) and 275 non-participants randomly selected from 1577 total non-participants
From: Predicting participation of people with impaired vision in epidemiological studies
Characteristic | n (%) | Participation YES/NO | Participation (%) | p-value (χ2) |
|---|---|---|---|---|
Gender | < 0.001 | |||
Male | 339 (56.6) | 225/114 | 66.4 | |
Female | 261 (43.4) | 100/161 | 38.3 | |
Age group | 0.00535 | |||
< 20 yrs | 14 (2.3) | 12/2 | 85.7 | |
20 to < 30 yrs | 8 (1.3) | 6/2 | 75.0 | |
30 to < 40 yrs | 28 (4.7) | 27/1 | 96.4 | |
40 to < 50 yrs | 43 (7.2) | 34/9 | 79.1 | |
50 to < 60 yrs | 82 (13.7) | 52/30 | 63.4 | |
60 to < 70 yrs | 137 (22.8) | 80/57 | 58.4 | |
≥ 70 yrs | 288 (48.0) | 114/174 | 39.6 | |
Number of Hospital Appointments per year (AHATTEND) | < 0.001 | |||
Low - AHA (≤4×/yr) | 173 (28.8) | 52/121 | 30.1 | |
Medium - AHA (5 to 9×/yr) | 178 (29.7) | 86/92 | 48.3 | |
High – AHA (≥ 10×/yr) | 249 (41.5) | 187/62 | 75.1 | |
Marital Status (MST) | < 0.001 | |||
Married | 261 (43.5) | 110/151 | 42.1 | |
Living together | 85 (14.2) | 76/9 | 89.4 | |
Single | 82 (13.7) | 56/26 | 68.3 | |
Widow | 131 (21.8) | 48/83 | 36.6 | |
Divorced | 41 (6.8) | 35/6 | 85.4 | |
Visual Acuity- decimal scale (VA) | < 0.001 | |||
0 | 42 (7.0) | 26/16 | 61.9 | |
0.1 | 80 (13.3) | 51/29 | 63.8 | |
0.2 | 105 (17.5) | 43/62 | 40.9 | |
0.3 | 87 (14.5) | 35/52 | 40.2 | |
0.4 | 129 (21.5) | 63/66 | 48.8 | |
0.5 | 157 (26.2) | 107/50 | 68.1 | |
Aetiology of visual impairment (CAUSE-VI) | 0.4336 | |||
Adult Macular Degeneration | 76 (16.0) | 31/45 | 40.8 | |
Diabetic retinopathy | 191 (40.1) | 110/81 | 57.6 | |
Glaucoma | 60 (12.6) | 26/34 | 43.3 | |
Other | 149 (31.3) | 81/68 | 54.4 | |
Multiple or undefined | 124 |