Participants' characteristics
| Attribute | Number |
| Gender | |
| Female | 29 |
| Male | 18 |
| Age (years) | |
| Mean | 28 |
| Range | 17–51 |
| Primary ethnicity | |
| Māori | 20 |
| NZ European | 13 |
| Niuean | 5 |
| Samoan | 4 |
| Cook Island Maori | 3 |
| German | 1 |
| Indian | 1 |
| Location | |
| Auckland (Urban) | 12 |
| Whanganui (Provincial) | 15 |
| Palmerston North (Provincial) | 3 |
| Wellington (Urban) | 11 |
| Dunedin (Urban) | 6 |