| Value | Category |
|---|---|
| 1 | More than two hours each day (10+ hours/week) |
| 2 | About one hour each day (~5 hrs/ week) |
| 3 | About a half hour each day (~3hrs/week) |
| 4 | A few minutes each day ( < 1 hr/week) |
| 5 | None (0) |
| 11 | .Z |
| 2147483622 | Don't know |
| 2147483623 | Refused to answer |
| 2147483647 | Not applicable |