| Value | Category | 
|---|---|
| -9 | Don't Know | 
| -8 | Refused | 
| -5 | Not Applicable | 
| -3 | Missing | 
| 1 | Physically handicapped | 
| 2 | Problems with sight, hearing or speech | 
| 3 | Psychological or psychiatric disorder | 
| 4 | HIV/Aids | 
| 5 | Epilepsy/fits | 
| 6 | Emphysema | 
| 7 | Alzheimer's disease | 
| 8 | Other | 
| Sysmiss |