| Value | Category | Cases | |
|---|---|---|---|
| 1 | half hour or less | 7943 |
74.3%
|
| 2 | over half hour to 1 hour | 1654 |
15.5%
|
| 3 | over 1 hour to 2 hours | 728 |
6.8%
|
| 4 | over 2 hours | 358 |
3.3%
|
| 9 | no response | 14 |
0.1%
|
| Sysmiss | 1 |