| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don?t know | 0 |
0%
|
| 0 | Less than 1 month | 0 |
0%
|
| 6 | 73 |
60.8%
|
|
| 7 | 36 |
30%
|
|
| 8 | 2 |
1.7%
|
|
| 9 | 5 |
4.2%
|
|
| 10 | 1 |
0.8%
|
|
| 12 | 2 |
1.7%
|
|
| 15 | 1 |
0.8%
|