| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
0.8%
|
| 1 | Never, it always has enough on hand | 287 |
16.6%
|
| 2 | Rarely | 448 |
26%
|
| 3 | Sometimes | 928 |
53.8%
|
| 4 | Frequently, at least once every three months | 49 |
2.8%
|
| Sysmiss | 1 |