Table 3.

Performance of deep learning system in the validation set per each hospital

Performance	Site 1	Site 2
Sensitivity	90.9% [1890/2078] (88.4–93.4%)	88.3% [735/832] (85.9–91.6%)
PPV	87.9% [1890/2148] (85.3–90.1)	88.9% [734/826] (86.1–91.0)
FPs per patient	2.09 [258/123]	0.77 [92/120]

FP = false-positive; PPV = positive predictive value