| Value | Category | Cases | |
|---|---|---|---|
| 1 | Sand | 3136 |
31.1%
|
| 2 | Concrete | 4275 |
42.4%
|
| 3 | Mud, clay and/or cow dung | 1079 |
10.7%
|
| 4 | Wood | 46 |
0.5%
|
| 5 | Other (Specify) | 204 |
2%
|
| 7 | Tiles | 1347 |
13.4%
|
| Sysmiss | 3 |