| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 | 
                                    
                                    9.7%
                                 | 
| -5 | Audit is ongoing | 1 | 
                                    
                                    0.8%
                                 | 
| 1 | One week or less | 74 | 
                                    
                                    59.7%
                                 | 
| 2 | 4 | 
                                    
                                    3.2%
                                 | |
| 3 | 7 | 
                                    
                                    5.6%
                                 | |
| 4 | 12 | 
                                    
                                    9.7%
                                 | |
| 5 | 2 | 
                                    
                                    1.6%
                                 | |
| 6 | 1 | 
                                    
                                    0.8%
                                 | |
| 7 | 1 | 
                                    
                                    0.8%
                                 | |
| 8 | 2 | 
                                    
                                    1.6%
                                 | |
| 10 | 2 | 
                                    
                                    1.6%
                                 | |
| 12 | 3 | 
                                    
                                    2.4%
                                 | |
| 15 | 1 | 
                                    
                                    0.8%
                                 | |
| 16 | 1 | 
                                    
                                    0.8%
                                 | |
| 20 | 1 | 
                                    
                                    0.8%
                                 | |
| Sysmiss | 1292 |