| Doubling Time | Number of Pregnancies in this range |
|---|---|
| 12 - 20 hours | (8) |
| 20 - 34 hours | (279) |
| 34 - 58 hours | (1656) |
| 58 - 98 hours | (382) |
| 98 - 164 hours | (44) |
| 164 - 275 hours | (9) |
| 275 - 460 hours | (2) |
| 460 - 772 hours | (1) |
| 772 - 1293 hours | (1) |
| 1293 - 2166 hours | (1) |
| 2166 - 3628 hours | (0) |
| 3628 - 6078 hours | (1) |