| Doubling Time | Number of Pregnancies in this range |
|---|---|
| 22 - 29 hours | (2) |
| 29 - 39 hours | (1) |
| 39 - 51 hours | (3) |
| 51 - 67 hours | (17) |
| 67 - 89 hours | (39) |
| 89 - 116 hours | (46) |
| 116 - 153 hours | (29) |
| 153 - 201 hours | (14) |
| 201 - 264 hours | (14) |
| 264 - 347 hours | (4) |
| 347 - 456 hours | (1) |
| 456 - 599 hours | (3) |