| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, THE ENTIRE QUESTIONNAIRE | 44 | 
                                    
                                    1.3%
                                 | 
| 2 | YES, PARTS OF THE QUESTIONNAIRE | 11 | 
                                    
                                    0.3%
                                 | 
| 3 | NO, NOT USED | 3114 | 
                                    
                                    91.8%
                                 | 
| Sysmiss | 222 | 
                                    
                                    6.5%
                                 |