| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply | 0 |
0%
|
| 1 | One year or less | 3 |
2%
|
| 3 | 3 |
2%
|
|
| 4 | 1 |
0.7%
|
|
| 14 | 2 |
1.3%
|
|
| NA | 142 |
94%
|