| Doubling Time | Number of Pregnancies in this range |
|---|---|
| 21 - 33 hours | (14) |
| 33 - 53 hours | (279) |
| 53 - 83 hours | (782) |
| 83 - 129 hours | (528) |
| 129 - 203 hours | (157) |
| 203 - 318 hours | (32) |
| 318 - 498 hours | (7) |
| 498 - 781 hours | (2) |
| 781 - 1223 hours | (1) |
| 1223 - 1915 hours | (1) |
| 1915 - 2998 hours | (0) |
| 2998 - 4695 hours | (1) |