| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 97 |
2.3%
|
| 1 | yes-lifted heavy loads | 12 |
0.3%
|
| 2 | yes-carried heavy loads | 13 |
0.3%
|
| 3 | yes-stood long hours | 45 |
1.1%
|
| 4 | yes-walked long hours | 21 |
0.5%
|
| 9 | not applicable | 3888 |
91.9%
|
| 9999995 | missing:impute | 153 |
3.6%
|
| Sysmiss | 4 |