| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6854 | 
                                    
                                    46.3%
                                 | |
| 1 | 1170 | 
                                    
                                    7.9%
                                 | |
| 2 | 558 | 
                                    
                                    3.8%
                                 | |
| 3 | 423 | 
                                    
                                    2.9%
                                 | |
| 4 | 226 | 
                                    
                                    1.5%
                                 | |
| 5 | 159 | 
                                    
                                    1.1%
                                 | |
| 6 | 186 | 
                                    
                                    1.3%
                                 | |
| 7 | 85 | 
                                    
                                    0.6%
                                 | |
| 8 | 97 | 
                                    
                                    0.7%
                                 | |
| 9 | 65 | 
                                    
                                    0.4%
                                 | |
| 10 | 63 | 
                                    
                                    0.4%
                                 | |
| 11 | 24 | 
                                    
                                    0.2%
                                 | |
| 12 | 684 | 
                                    
                                    4.6%
                                 | |
| 24 | 368 | 
                                    
                                    2.5%
                                 | |
| 36 | 187 | 
                                    
                                    1.3%
                                 | |
| 48 | 117 | 
                                    
                                    0.8%
                                 | |
| 60 | 116 | 
                                    
                                    0.8%
                                 | |
| 72 | 94 | 
                                    
                                    0.6%
                                 | |
| 84 | 44 | 
                                    
                                    0.3%
                                 | |
| 96 | 23 | 
                                    
                                    0.2%
                                 | |
| 100 | < 1 day | 0 | 
                                    
                                    0%
                                 | 
| 101 | days: 1 | 0 | 
                                    
                                    0%
                                 | 
| 108 | 26 | 
                                    
                                    0.2%
                                 | |
| 120 | 19 | 
                                    
                                    0.1%
                                 | |
| 132 | 6 | 
                                    
                                    0%
                                 | |
| 144 | 5 | 
                                    
                                    0%
                                 | |
| 156 | 9 | 
                                    
                                    0.1%
                                 | |
| 168 | 2 | 
                                    
                                    0%
                                 | |
| 180 | 20 | 
                                    
                                    0.1%
                                 | |
| 201 | weeks: 1 | 0 | 
                                    
                                    0%
                                 | 
| 301 | months: 1 | 0 | 
                                    
                                    0%
                                 | 
| 401 | years: 1 | 0 | 
                                    
                                    0%
                                 | 
| 995 | within last 4 weeks | 0 | 
                                    
                                    0%
                                 | 
| 996 | before last birth | 1250 | 
                                    
                                    8.4%
                                 | 
| 997 | inconsistent | 1922 | 
                                    
                                    13%
                                 | 
| 998 | don't know | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 144 |