| Value | Category | Cases | |
|---|---|---|---|
| 1 | I do this activity using a computer | 196 |
2.1%
|
| 2 | I do this activity using a cellphone | 111 |
1.2%
|
| 3 | I don’t do this activity at all | 9091 |
96.2%
|
| 4 | I do this activity using both computer and cellphone | 50 |
0.5%
|
| Sysmiss | 15660 |