| Value | Category | Cases | |
|---|---|---|---|
| 0 | no: received treatm. | 531 |
53.6%
|
| 1 | yes: no treatment | 450 |
45.4%
|
| 8 | dk | 6 |
0.6%
|
| 9 | 4 |
0.4%
|
|
| 11 | .Z | 17763 |