Focus group participant characteristics (n=63)
| Group | N | Gender | Smoking status |
| FG-1 | 7 | Female | Smoker (S) |
| FG-2 | 8 | Female | Smoker (S) |
| FG-3 | 8 | Female | Non-smoker (NS) |
| FG-4 | 8 | Female | Non-smoker (NS) |
| FG-5 | 8 | Male | Smoker (S) |
| FG-6 | 8 | Male | Smoker (S) |
| FG-7 | 8 | Male | Non-smoker (NS) |
| FG-8 | 8 | Male | Non-smoker (NS) |