| Value |
Category |
| 1 |
sand/dirt/straw |
| 2 |
smoothed mud |
| 3 |
smooth cement |
| 4 |
wood |
| 5 |
tile |
| 6 |
other (specify) |
| Sysmiss |
|
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.