Value |
Category |
1 |
<1 hr. |
3 |
1-2 hrs. |
4 |
3-4 hrs. |
5 |
>4 hrs. |
6 |
not applicable |
8 |
not admin. |
9 |
missing |
11 |
.A |
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.