| Value |
Category |
| 1 |
<2hrs. |
| 2 |
2.0-3.5 hrs. |
| 3 |
3.5-5.0hrs. |
| 4 |
>5hrs. |
| 6 |
not applicable |
| 8 |
not admin. |
| 9 |
missing |
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.