| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 13351 |
63.2%
|
| 2 | 31-60 minutes | 5972 |
28.3%
|
| 3 | 61-120 minutes | 761 |
3.6%
|
| 4 | More than 2 hours | 147 |
0.7%
|
| 9 | Unspecified | 890 |
4.2%
|