Value |
Category |
-6 |
Hours varying(even an average over 4 weeks is not possible) |
-2 |
n.a. (PL031 not = 1, 2, 3 or 4) |
-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.