| Value |
Category |
| -9 |
Don't know (spontaneous) |
| 0 |
|
| 1 |
One minute or less |
| 8 |
|
| 15 |
|
| 20 |
|
| 25 |
|
| 30 |
|
| 35 |
|
| 40 |
|
| 45 |
|
| 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.
