| Value | Category | Cases | |
|---|---|---|---|
| 0 | less than a month | 37 |
27.6%
|
| 1 | 4 |
3%
|
|
| 3 | 2 |
1.5%
|
|
| 4 | 3 |
2.2%
|
|
| 5 | 2 |
1.5%
|
|
| 6 | 6 |
4.5%
|
|
| 10 | 6 |
4.5%
|
|
| 12 | 18 |
13.4%
|
|
| 15 | 2 |
1.5%
|
|
| 16 | 1 |
0.7%
|
|
| 18 | 6 |
4.5%
|
|
| 24 | 11 |
8.2%
|
|
| 25 | 1 |
0.7%
|
|
| 30 | 2 |
1.5%
|
|
| 36 | 13 |
9.7%
|
|
| 48 | 2 |
1.5%
|
|
| 60 | 12 |
9%
|
|
| 72 | 2 |
1.5%
|
|
| 84 | 1 |
0.7%
|
|
| 100 | 2 |
1.5%
|
|
| 120 | 1 |
0.7%
|
|
| Sysmiss | 4824 |