| Value |
Category |
| 0 |
I do not take extra tuition |
| 1 |
Once a month |
| 2 |
2 or 3 times per month |
| 3 |
Once or twice per week |
| 4 |
3 or more times per week |
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.