| Doubling Time | Number of Pregnancies in this range |
|---|---|
| 11 - 20 hours | (7) |
| 20 - 35 hours | (333) |
| 35 - 62 hours | (2723) |
| 62 - 111 hours | (1086) |
| 111 - 196 hours | (144) |
| 196 - 348 hours | (28) |
| 348 - 616 hours | (9) |
| 616 - 1091 hours | (5) |
| 1091 - 1931 hours | (2) |
| 1931 - 3418 hours | (0) |
| 3418 - 6049 hours | (0) |
| 6049 - 10704 hours | (1) |