| Value | Category | Cases | |
|---|---|---|---|
| 0 | 165 |
20.5%
|
|
| 1 | 221 |
27.5%
|
|
| 2 | 102 |
12.7%
|
|
| 3 | 54 |
6.7%
|
|
| 4 | 4+ | 84 |
10.4%
|
| 5 | never used | 178 |
22.1%
|
| Sysmiss | 1 |