Value |
Category |
-99 |
dk |
-77 |
na |
0 |
less than one day |
1 |
|
1.5 |
|
2 |
|
3 |
|
4 |
|
5 |
|
7 |
|
8 |
|
10 |
|
12 |
|
15 |
|
20 |
|
21 |
|
30 |
|
40 |
|
45 |
|
60 |
|
90 |
|
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.