Patient characteristics (n=235)
| Mean age (years) ± SD | 66±19 |
| Gender N (%) | |
| Male | 115 (49) |
| Female | 120 (51) |
| Ethnicity N (%) | |
| European | 120 (51.1) |
| Pacific Island decent | 54 (23.0) |
| Maori | 32 (13.6) |
| Asian | 11 (4.7) |
| Indian | 11 (4.7) |
| Other | 5 (2.1) |
| Unknown | 2 (0.85) |
Results are shown as number (%) unless stated otherwise.