| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, prepeared by me | 17243 |
22.5%
|
| 2 | Yes, prepeared by someone else | 11289 |
14.7%
|
| 3 | Never used | 48156 |
62.8%
|
| 6 | 1 |
0%
|
|
| Sysmiss | 118124 |