Single product use | |
Conventional cigarette only | 1 |
Hookah only | 3 |
Dual tobacco and nicotine product use | |
Conventional cigarette, cigar | 1 |
Conventional cigarette, hookah | 1 |
Conventional cigarette, electronic cigarette | 1 |
Electronic cigarette, hookah | 2 |
Polytobacco and nicotine product use | |
Little cigar, electronic cigarette, hookah | 1 |
Conventional cigarette, pipe, various cigars | 1 |
None | 22 |