| Value | Category |
|---|---|
| -999999999 | missing |
| 1 | Travel too expensive |
| 2 | Travel takes too long |
| 3 | Cannot get time off work |
| 4 | Facility too far from place of residence |
| 5 | Don't have money to pay for medication |
| 6 | Personal problems |
| 7 | Think no longer need medication |
| 8 | Other (specify) |