Value |
Category |
-9 |
Don't know (spontaneous) |
0 |
|
1 |
One minute or less |
8 |
|
15 |
|
20 |
|
25 |
|
30 |
|
41 |
|
45 |
|
53 |
|
55 |
|
57 |
|
59 |
|
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.