Value |
Category |
1 |
master only (1) |
2 |
using only (2) |
3 |
matched (3) |
4 |
missing updated (4) |
5 |
nonmissing conflict (5) |
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.