| Value |
Category |
| 1 |
Less than 70 SRD |
| 2 |
SRD 70 - SRD 104 |
| 3 |
SRD 105 - SRD 139 |
| 4 |
SRD 140 - SRD 175 |
| 5 |
More than 175 SRD |
| 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.