Demographic characteristics of registered participants by recruitment strategy (column percentages in parentheses)
| Mailout | Community | In-store | All | |
| n = 975 | n = 681 | n = 270 | N = 1926 | |
| Age, mean (SD) | 46.3 (13.4) | 39.5 (13.8) | 38.4 (12.1) | 42.8 (13.9) |
| Sex, n (%) | ||||
| Female | 823 (84.4) | 554 (81.4) | 242 (89.6) | 1619 (84.1) |
| Male | 152 (18.5) | 127 (18.6) | 28 (11.6) | 307 (19.0) |
| Ethnicity, n (%) | ||||
| Māori | 79 (8.1) | 352 (51.7) | 191 (70.7) | 622 (32.3) |
| Pacific | 26 (2.7) | 305 (44.8) | 71 (26.3) | 402 (20.9) |
| NMNP | 867 (89.2) | 24 (3.5) | 8 (3.0) | 899 (46.7) |
| Missing | 3 | 3 | ||
| Education, n (%) | ||||
| Primary or less | 108 (13.0) | 168 (31.0) | 48 (31.8) | 324 (21.2) |
| Secondary | 298 (35.8) | 154 (28.4) | 60 (39.7) | 512 (33.6) |
| University degree or diploma | 311 (37.4) | 175 (32.3) | 37 (24.5) | 523 (34.3) |
| Trade qualification | 36 (4.3) | 15 (2.8) | 4 (2.6) | 55 (3.6) |
| Other | 79 (9.5) | 30 (5.5) | 2 (1.3) | 111 (7.3) |
| Missing* | 143 | 139 | 119 | 401 |
| Household income, n (%) | ||||
| High (>$60000/year) | 402 (48.2) | 85 (15.9) | 32 (21.1) | 519 (34.1) |
| Low (<$60000/year) | 402 (48.2) | 331 (61.8) | 115 (75.7) | 848 (55.7) |
| Declined to answer | 30 (3.6) | 120 (22.4) | 5 (3.3) | 155 (10.2) |
| Missing* | 141 | 145 | 118 | 404 |
*These questions were asked on the baseline form (ie, post-registration), which was not completed/returned by all registered participants.
NMNP, non-Māori, non-Pacific.