Value |
Category |
-5 |
missing value of PL051 because PL050 is still used |
-2 |
n.a. /*PL031 not=1,2,3 or 4 and PL015 not=1*/ |
-1 |
missing |
1 |
filled |
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.