| Value | Category | Cases | |
|---|---|---|---|
| 1 | No interruption | 570 |
24.5%
|
| 2 | Only once | 397 |
17.1%
|
| 3 | Twice | 516 |
22.2%
|
| 4 | Three Times | 311 |
13.4%
|
| 5 | More than 3 times | 529 |
22.8%
|
| Sysmiss | 2939 |