| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -7 | Does not apply (spontaneous) | 3 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    
| 0 | Less than one day | 7 | 
                                                                 
                                    
                                    3.3%
                                 
                                                             | 
                                                        
                    
| 1 | 6 | 
                                                                 
                                    
                                    2.8%
                                 
                                                             | 
                                                        
                    |
| 2 | 24 | 
                                                                 
                                    
                                    11.3%
                                 
                                                             | 
                                                        
                    |
| 3 | 23 | 
                                                                 
                                    
                                    10.8%
                                 
                                                             | 
                                                        
                    |
| 4 | 16 | 
                                                                 
                                    
                                    7.5%
                                 
                                                             | 
                                                        
                    |
| 5 | 17 | 
                                                                 
                                    
                                    8%
                                 
                                                             | 
                                                        
                    |
| 6 | 1 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 7 | 30 | 
                                                                 
                                    
                                    14.2%
                                 
                                                             | 
                                                        
                    |
| 10 | 19 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    |
| 14 | 9 | 
                                                                 
                                    
                                    4.2%
                                 
                                                             | 
                                                        
                    |
| 15 | 21 | 
                                                                 
                                    
                                    9.9%
                                 
                                                             | 
                                                        
                    |
| 16 | 1 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 20 | 9 | 
                                                                 
                                    
                                    4.2%
                                 
                                                             | 
                                                        
                    |
| 21 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 25 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 28 | 1 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 30 | 14 | 
                                                                 
                                    
                                    6.6%
                                 
                                                             | 
                                                        
                    |
| 40 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 45 | 2 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 60 | 3 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 1306 |