| Value |
Category |
| 1 |
None |
| 2 |
Fabrics |
| 3 |
Chip wood/Hard Board |
| 4 |
Wooden |
| 5 |
Concrete |
| 6 |
Other |
| 9 |
Not Stated |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.