| Doubling Time | Number of Pregnancies in this range |
|---|---|
| 22 - 28 hours | (2) |
| 28 - 36 hours | (3) |
| 36 - 45 hours | (16) |
| 45 - 57 hours | (37) |
| 57 - 72 hours | (87) |
| 72 - 91 hours | (89) |
| 91 - 114 hours | (59) |
| 114 - 144 hours | (33) |
| 144 - 182 hours | (15) |
| 182 - 229 hours | (8) |
| 229 - 289 hours | (4) |
| 289 - 364 hours | (2) |