Participants’ characteristics
| Risk factor (n*) | Frequency (%) | Risk factor (n*) | Frequency (%) |
|---|---|---|---|
| *n is the total number of complete data records for that variable. | |||
| Age (2530) | Country of birth (2529) | ||
| 40–49 | 322 (12.7) | Australia/New Zealand | 1468 (58.1) |
| 50–59 | 763 (30.2) | British Isles | 259 (10.2) |
| 60–69 | 772 (30.5) | Greece/Cyprus/Malta | 180 (7.1) |
| 70–79 | 497 (19.6) | Italy | 241 (9.5) |
| 80+ | 176 (7.0) | Other | 381 (15.1) |
| Female (2530) | 1383 (54.7) | Duration of high blood pressure (2352) | |
| Vision category (2530) | None | 1478 (62.8) | |
| Bilateral vision loss | 159 (6.3) | ⩽5 years | 249 (10.6) |
| Unilateral vision loss | 302 (11.9) | 6–10 years | 189 (8.0) |
| Normal vision | 2069 (81.8) | >10 years | 436 (18.5) |
| Smoking (2332) | Arthritis (2338) | 828 (35.4) | |
| Never | 1140 (48.9) | Diabetes (2411) | 193 (8.0) |
| Ex-smoker | 891 (38.2) | Gout (2331) | 228 (9.8) |
| Current | 301 (12.9) | Cardiovascular disease (2323) | 298 (12.8) |