| Value | Category |
|---|---|
| 1 | I did not chew betel nut |
| 2 | I bought them in a store, shop or gas station |
| 3 | I gave someone else money to buy them for me |
| 4 | A person under 21 years old gave them to me (not a family member) |
| 5 | A person older than 21 years old gave them to me (not a family member) |
| 6 | I stole them |
| 7 | I got them some other way |
| Sysmiss |