| Value | Category |
|---|---|
| -9 | REFUSED |
| -7 | DO NOT REMEMBER/NEVER PURCHASED |
| 1 | STORE |
| 2 | CONVENIENCE STORE OR SUPERMARKET |
| 3 | STREET VENDOR |
| 4 | PHARMACY |
| 5 | DUTY FREE SHOP |
| 6 | KIOSK OR NEWSPAPER STAND |
| 7 | OUTSIDE THE COUNTRY |
| 8 | INTERNET |
| 9 | FROM ANOTHER PERSON |
| 10 | VENDING MACHINE |
| 11 | OTHER |
| Sysmiss |