| Value | Category | Cases | |
|---|---|---|---|
| 100 | < 1 day | 630 | 
                                    
                                    4.3%
                                 | 
| 101 | days: 1 | 1069 | 
                                    
                                    7.2%
                                 | 
| 102 | 891 | 
                                    
                                    6%
                                 | |
| 103 | 824 | 
                                    
                                    5.6%
                                 | |
| 104 | 532 | 
                                    
                                    3.6%
                                 | |
| 105 | 450 | 
                                    
                                    3%
                                 | |
| 106 | 120 | 
                                    
                                    0.8%
                                 | |
| 107 | 187 | 
                                    
                                    1.3%
                                 | |
| 108 | 54 | 
                                    
                                    0.4%
                                 | |
| 109 | 17 | 
                                    
                                    0.1%
                                 | |
| 110 | 42 | 
                                    
                                    0.3%
                                 | |
| 111 | 20 | 
                                    
                                    0.1%
                                 | |
| 112 | 24 | 
                                    
                                    0.2%
                                 | |
| 113 | 2 | 
                                    
                                    0%
                                 | |
| 114 | 19 | 
                                    
                                    0.1%
                                 | |
| 115 | 9 | 
                                    
                                    0.1%
                                 | |
| 117 | 3 | 
                                    
                                    0%
                                 | |
| 118 | 1 | 
                                    
                                    0%
                                 | |
| 120 | 3 | 
                                    
                                    0%
                                 | |
| 123 | 4 | 
                                    
                                    0%
                                 | |
| 124 | 3 | 
                                    
                                    0%
                                 | |
| 125 | 4 | 
                                    
                                    0%
                                 | |
| 126 | 4 | 
                                    
                                    0%
                                 | |
| 128 | 2 | 
                                    
                                    0%
                                 | |
| 129 | 3 | 
                                    
                                    0%
                                 | |
| 137 | 1 | 
                                    
                                    0%
                                 | |
| 199 | 5 | 
                                    
                                    0%
                                 | |
| 201 | weeks: 1 | 1317 | 
                                    
                                    8.9%
                                 | 
| 202 | 900 | 
                                    
                                    6.1%
                                 | |
| 203 | 407 | 
                                    
                                    2.7%
                                 | |
| 204 | 73 | 
                                    
                                    0.5%
                                 | |
| 205 | 14 | 
                                    
                                    0.1%
                                 | |
| 206 | 10 | 
                                    
                                    0.1%
                                 | |
| 207 | 35 | 
                                    
                                    0.2%
                                 | |
| 209 | 1 | 
                                    
                                    0%
                                 | |
| 301 | months: 1 | 1329 | 
                                    
                                    9%
                                 | 
| 302 | 695 | 
                                    
                                    4.7%
                                 | |
| 303 | 591 | 
                                    
                                    4%
                                 | |
| 304 | 354 | 
                                    
                                    2.4%
                                 | |
| 305 | 288 | 
                                    
                                    1.9%
                                 | |
| 306 | 342 | 
                                    
                                    2.3%
                                 | |
| 307 | 236 | 
                                    
                                    1.6%
                                 | |
| 308 | 225 | 
                                    
                                    1.5%
                                 | |
| 309 | 214 | 
                                    
                                    1.4%
                                 | |
| 310 | 204 | 
                                    
                                    1.4%
                                 | |
| 311 | 97 | 
                                    
                                    0.7%
                                 | |
| 399 | 16 | 
                                    
                                    0.1%
                                 | |
| 401 | years: 1 | 1203 | 
                                    
                                    8.1%
                                 | 
| 402 | 499 | 
                                    
                                    3.4%
                                 | |
| 403 | 245 | 
                                    
                                    1.7%
                                 | |
| 404 | 140 | 
                                    
                                    0.9%
                                 | |
| 405 | 136 | 
                                    
                                    0.9%
                                 | |
| 406 | 100 | 
                                    
                                    0.7%
                                 | |
| 407 | 44 | 
                                    
                                    0.3%
                                 | |
| 408 | 29 | 
                                    
                                    0.2%
                                 | |
| 409 | 39 | 
                                    
                                    0.3%
                                 | |
| 410 | 27 | 
                                    
                                    0.2%
                                 | |
| 411 | 14 | 
                                    
                                    0.1%
                                 | |
| 412 | 17 | 
                                    
                                    0.1%
                                 | |
| 413 | 16 | 
                                    
                                    0.1%
                                 | |
| 414 | 2 | 
                                    
                                    0%
                                 | |
| 415 | 20 | 
                                    
                                    0.1%
                                 | |
| 499 | 10 | 
                                    
                                    0.1%
                                 | |
| 995 | within last 4 weeks | 0 | 
                                    
                                    0%
                                 | 
| 996 | before last birth | 0 | 
                                    
                                    0%
                                 | 
| 997 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 998 | don't know | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 134 |