| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, THE ENTIRE QUESTIONNAIRE | 19 | 
                                    
                                    1.3%
                                 | 
| 2 | YES, PARTS OF THE QUESTIONNAIRE | 7 | 
                                    
                                    0.5%
                                 | 
| 3 | NO, NOT USED | 1405 | 
                                    
                                    95%
                                 | 
| Sysmiss | 48 | 
                                    
                                    3.2%
                                 |