Table 1 Description of materials and measurements for smoking and vaping
Sample 1 | Sample 2 | |
|---|---|---|
Data collection | Autumn 2017 | Autumn 2018 |
Smoking history | Smoking and former smoking with unknown quit date | Smoking and former smoking with quit date within the last 1–1½years |
Age (mean) | 15–90 (45.7) | 19–84 (54.6) |
Prp women | 49% | 54% |
N | 2099 | 1336 |
Smoking measurement | Daily, occasional, former daily | Daily, occasional, quit after spring 2017 (wave 1) |
Vaping measurement | Weekly or more often, less than weekly, have only tried once or a few times, never tried | Daily, weekly, monthly, less than monthly, tried earlier, never tried |