| Value |
Category |
| 1 |
1. Not at all attentive |
| 2 |
2. Somewhat attentive |
| 3 |
3. Very attentive |
| 97 |
97. Invalid code |
| 99 |
99. Don't know |
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.