SantiagoAn AI model dated pregnancies within 6.9 days on average.
Conventional due dates missed by 11.6 days, failing women who arrive without a first-trimester scan.
Most of the gain, found in 4 hospitals in Chile, reflected shorter local gestation and fell below 1 day against recentred comparators.
The model’s preterm-birth risk score reached an area under the curve of 0.86 but was miscalibrated.
No woman was managed with the model, so the authors call for a prospective study.
How each outlet framed it
- Nature
- reports the model's fixed-term-comparator flaw: due-date baselines can't rank who delivers early, and most of the gain over the due date shrinks below a day
Sources: Nature