| 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.