| Comparison Group (n = 883) | Intervention Group (n = 517) | p-value |
---|---|---|---|
Age, mean (SD) | 81.9 (5.0) | 80.2 (5.1) | < 0.0001 |
Gender, n (%) | |||
 Female | 485 (54.9%) | 301 (58.2%) |  |
 Male | 398 (45.1%) | 216 (41.8%) | 0.23 |
Ethnicity, n (%) | |||
 European | 773 (87.5%) | 491 (95.0%) |  |
 Asian | 60 (6.8%) | 3 (0.6%) |  |
 Maori | 7 (0.8%) | 1 (0.2%) |  |
 Pacific Island | 3 (0.3%) | – |  |
 Othera | 40 (4.5%) | 22 (4.3%) | < 0.0001 |