Participant characteristics
| Characteristics | n |
| Gender | |
| Female | 10 |
| Male | 10 |
| Age (years) | |
| 17 | 13 |
| 18 | 7 |
| Ethnicities (identification with multiple ethnicities possible) | |
| Māori | 8 |
| NZ European | 12 |
| Pacific | 5 |
| Asian | 3 |
| Other | 1 |
| Smoking status* | |
| Current smoker | 5 |
| Former smoker | 1 |
| Non-smoker | 14 (13 non-susceptible and 1 susceptible)† |
| Location | |
| North Island | 10 |
| South Island | 10 |
*Current smoker: smoked at least monthly (one participant smoked daily; two smoked weekly; two smoked monthly); Former smoker: previously a current smoker but no longer smoking; Non- smoker: had not previously smoked at least monthly.
†Assessed using Pierce’s susceptibility measure.64