| Value |
Category |
| 1 |
Within 1/2 hour |
| 2 |
1/2 to 1 hour away |
| 3 |
1 hour to 6 hours |
| 4 |
6 to 12 hours |
| 5 |
Over 12 hours |
| 9 |
Undefined |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.