Reasons for discrepant answers for adults and youth
| Reason | Adult (n = 361) (%) | Youth (n = 71) (%) |
| I changed between interviews | 10.80 | 43.70 |
| I did not understand the question | 24.70 | 4.20 |
| I could not remember | 12.20 | 2.80 |
| I was not paying attention | 37.10 | 25.30 |
| I do not know enough about (product) | 8.60 | 18.30 |
| I did not feel comfortable giving a true answer | 1.10 | 1.40 |
| Other | 5.50 | 4.20 |