| Value |
Category |
| 1 |
Less than 15 min |
| 2 |
15 - 29 min |
| 3 |
30 ? 44 min |
| 4 |
45 ? 59 min |
| 5 |
60 min or more |
| 8 |
Not applicable |
| 9 |
Unspecified |
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.