| Value | Category | Cases | |
|---|---|---|---|
| 1 | half hour or less | 2278 |
21.3%
|
| 2 | over half hour to 1 hour | 1729 |
16.2%
|
| 3 | over 1 hour to 2 hours | 1531 |
14.3%
|
| 4 | over 2 hours | 3683 |
34.4%
|
| 9 | no response | 1476 |
13.8%
|
| Sysmiss | 1 |