| Demographic | | | | | |
| Age, mean | 71.0 | 70.2 | 68.8 | 73.0 | 71.9 |
| Male (%) | 53.3 | 52.6 | 41.2 | 47.8 | 47.9 |
| White (%) | 81.4 | 86.1 | 94.9 | 78.9 | 82.3 |
| Education (years), mean | 12.3 | 13.1 | 13.0 | 11.6 | 12.0 |
| Medical | | | | | |
| Arthritis | 49.9 | 63.0 | 43.3 | 51.4 | 51.5 |
| Cancer | 13.2 | 5.9 | 9.8 | 14.1 | 12.4 |
| Depression | 12.8 | 10.5 | 5.8 | 7.8 | 8.3 |
| Diabetes | 14.6 | 12.3 | 16.9 | 15.9 | 15.5 |
| Heart disease | 23.2 | 31.1 | 14.1 | 25.4 | 24.2 |
| Hypertension | 32.1 | 37.0 | 24.0 | 53.3 | 45.2 |
| Neurological | 6.1 | 7.2 | 3.8 | 8.4 | 7.4 |
| Fall | 13.1 | 32.2 | 2.1 | 27.5 | 23.1 |
| Cognitive impairment | 18.3 | 9.1 | 1.9 | 17.1 | 14.1 |
| Eye and visual | | | | | |
| Cataract | 35.8 | 71.9 | 21.2 | 34.2 | 36.9 |
| Glaucoma | 7.3 | 7.0 | 6.0 | 8.6 | 7.9 |
| Macular degeneration | 1.0 | 6.7 | 1.6 | 2.6 | 2.8 |
| Diabetic retinopathy | 1.4 | 3.8 | 0.9 | 3.8 | 3.1 |
| Binocular acuity | | | | | |
| 20/20 or better | 44.1 | 31.1 | 45.4 | 67.9 | 58.1 |
| Worse 20/20 and better 20/40 | 42.1 | 59.5 | 52.6 | 30.0 | 37.9 |
| 20/40 or worse | 13.8 | 9.4 | 2.0 | 2.1 | 4.0 |
| Binocular contrast sensitivity | | | | | |
| ⩾1.675 | 60.3 | 8.6 | 41.1 | 21.9 | 26.7 |
| ⩾1.575 and <1.675 | 21.5 | 11.0 | 42.0 | 28.2 | 27.5 |
| ⩾1.450 and <1.575 | 6.8 | 32.7 | 11.3 | 33.5 | 27.8 |
| <1.450 | 11.4 | 47.7 | 5.6 | 16.4 | 18.1 |
| Useful field of view | | | | | |
| <22.5 | 24.4 | 23.3 | 47.0 | 19.7 | 24.5 |
| ⩾22.5 and <35.0 | 12.2 | 29.5 | 26.7 | 22.5 | 23.0 |
| ⩾35.0 and <45.0 | 25.9 | 32.4 | 20.8 | 28.4 | 27.6 |
| ⩾45.0 | 37.6 | 14.8 | 5.4 | 29.4 | 25.0 |