| Doubling Time | Number of Pregnancies in this range |
|---|---|
| 11 - 17 hours | (9) |
| 17 - 26 hours | (214) |
| 26 - 40 hours | (4285) |
| 40 - 62 hours | (3539) |
| 62 - 95 hours | (394) |
| 95 - 145 hours | (60) |
| 145 - 223 hours | (15) |
| 223 - 341 hours | (4) |
| 341 - 522 hours | (1) |
| 522 - 799 hours | (1) |
| 799 - 1224 hours | (1) |
| 1224 - 1873 hours | (1) |