| Doubling Time | Number of Pregnancies in this range |
|---|---|
| 12 - 14 hours | (5) |
| 14 - 17 hours | (2) |
| 17 - 21 hours | (16) |
| 21 - 26 hours | (22) |
| 26 - 31 hours | (19) |
| 31 - 38 hours | (8) |
| 38 - 46 hours | (3) |
| 46 - 57 hours | (2) |
| 57 - 69 hours | (0) |
| 69 - 84 hours | (1) |
| 84 - 102 hours | (1) |
| 102 - 124 hours | (1) |