| Value | Category |
|---|---|
| 1 | I did not smoke any cigarettes during the past 30 days |
| 2 | I bought them in a store or shop |
| 3 | I bought them from a street vendor |
| 4 | I bought them at a kiosk |
| 5 | I bought them from a vending machine |
| 6 | I got them from someone else |
| 7 | I got them some other way |
| Sysmiss |