| Value | Category | Cases | |
|---|---|---|---|
| 1 | Light | 1770 |
40%
|
| 2 | Medium | 211 |
4.8%
|
| 3 | Heavy | 108 |
2.4%
|
| 4 | Cannot Recall | 344 |
7.8%
|
| 5 | None | 1997 |
45.1%
|
| Sysmiss | 1006 |