Agreement between Population Assessment of Tobacco and Health reliability and validity survey answers and saliva test results
| Saliva test result | Not current user at reinterview | Current user at reinterview | ||
| No | Rate | No | Rate | |
| Positive | 25 | 11.5 | 88 | 85.4 |
| Negative | 192 | 88.5 | 15 | 14.6 |
| Invalid | 30 | – | 17 | – |