Comparison of design features of main Population Assessment of Tobacco and Health (PATH) Study and PATH-reliability and validity (RV) Study
| Main PATH Study | PATH-RV Study | |
| Sample design | Four-stage probability sample | Four-stage probability sample (in subset of PATH Study sample areas) |
| Field staff | Experienced, trained Westat interviewers | Experienced, trained Westat interviewers (also working on the main PATH Study) |
| Mode of data collection | ||
| Screener | Face to face | Mail screener |
| Main interview | Audio computer-administered self-interviews (ACASI) with synthesised voice | ACASI with synthesised voice |
| Questionnaire | PATH Study wave 4 interview | Initial Interview: PATH Study wave 4 interview |
| Reinterview: PATH Study wave 4 Interview (with additional items after the PATH Study questions) | ||
| Data collection software | Blaise (V.4.8.4) | Blaise (V.4.8.4) |
| Biospecimen collection | Urine | Saliva |
| Blood | ||
| Respondent incentives | US$35 for adult interview | US$35 for adult interview |
| US$25 for youth interview | US$25 for youth interview | |
| US$25 for urine | US$10 for saliva | |
| US$25 for blood |