| Value | Category | Cases | |
|---|---|---|---|
| 1 | half hour or less | 2175 |
20.3%
|
| 2 | over half hour to 1 hour | 2286 |
21.4%
|
| 3 | over 1 hour to 2 hours | 2634 |
24.6%
|
| 4 | over 2 hours | 3547 |
33.2%
|
| 9 | no response | 55 |
0.5%
|
| Sysmiss | 1 |