| Value |
Category |
| 0 |
Never |
| 1 |
1-3 times perterm |
| 2 |
1-3 times per month |
| 3 |
Once per week |
| 4 |
2-3 times per week |
| 5 |
Almost every lesson |
| 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.