Value |
Category |
1 |
NO TT |
2 |
<1 YR TT |
3 |
1 YR TT |
4 |
2 YRS TT |
5 |
3 YRS TT |
6 |
>3 YRS TT |
9 |
omitted |
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.