| Value |
Category |
| -99 |
DK |
| -88 |
Missing |
| -77 |
NA |
| 1 |
Easily |
| 2 |
Within a little difficulty |
| 3 |
With a lot of difficulty |
| 4 |
Not at all |
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.