Table 2.
Five year crude and age standardised incidence (%) of cataract surgery in right eyes of participants attending the Blue Mountains Eye Study (BMES) and the Beaver Dam Eye Study (BDES) by baseline cataract type
| 5 Year cataract surgery incidence | |||||
| BMES | |||||
| Cataract type | Status | Eyes at risk | Crude (%) (95% CI) | Standardised* (%) | BDES (%) |
| Only cortical | absent | 1200 | 1.1 (0.5 to 1.7) | 1.5 | 1.3 |
| present | 140 | 7.1 (2.8 to 11.5) | 6.7 | 9.0 | |
| Any cortical | absent | 1901 | 3.0 (2.2 to 3.7) | 3.5 | 3.1 |
| present | 276 | 13.0 (9.1 to 17.0) | 10.1 | 17.2 | |
| Only nuclear | absent | 1200 | 1.1 (0.5 to 1.7) | 1.5 | 1.3 |
| present | 180 | 8.9 (4.7 to 13.1) | 5.6 | 9.0 | |
| Any Nuclear | absent | 1388 | 1.9 (1.2 to 2.7) | 2.4 | 2.6 |
| present | 235 | 14.0 (9.6 to 18.5) | 8.9 | 32.0 | |
| Only PSC | absent | 1200 | 1.1 (0.5 to 1.7) | 1.5 | 1.3 |
| present | 36 | 11.1 (0.3 to 21.9) | 13.7 | 16.0 | |
| Any PSC | absent | 2107 | 3.7 (2.9 to 4.5) | 3.9 | 3.4 |
| present | 70 | 21.4 (11.6 to 31.3) | 16.4 | 28.0 | |
*BMES data age standardised to BDES population.