| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Not at all attentive | 41 |
4.2%
|
| 2 | 2. Somewhat attentive | 232 |
23.5%
|
| 3 | 3. Very attentive | 667 |
67.6%
|
| 97 | 97. Invalid code | 42 |
4.3%
|
| 99 | 99. Don't know | 4 |
0.4%
|
| Sysmiss | 13 |