| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes | 4307 |
5.8%
|
| 2 | 15–30 minutes | 7717 |
10.4%
|
| 3 | 31–60 minutes | 5006 |
6.7%
|
| 4 | 61–90 minutes | 1138 |
1.5%
|
| 5 | More than 90 minutes | 291 |
0.4%
|
| 6 | Do not know | 206 |
0.3%
|
| 8 | Not applicable | 55439 |
74.5%
|
| 9 | Unspecified | 345 |
0.5%
|