| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 0 |
0%
|
| 1 | Concrete only | 631 |
15.8%
|
| 2 | Covered concrete | 1018 |
25.5%
|
| 3 | Mud | 2281 |
57.1%
|
| 4 | Wood only | 3 |
0.1%
|
| 5 | Other | 57 |
1.4%
|
| 6 | Does not know | 3 |
0.1%
|
| Sysmiss | 7 |