Table 5.

Confusion matrix showing the “ground truth” result and the user read (substudy 2, excluding invalid images)

		User read
		Positive	Negative	Void
Ground truth (clinically assessed)	positive	2	12	0
	negative	29	33,193	2
	void	0	3	13

		95% CI
Sensitivity	6.45%	0.79%–21.42%
Specificity	99.96%	99.94%–99.98%
Positive predictive value	14.29%	0.18%–42.81%
Negative predictive value	99.91%	99.87%–99.94%
Void accuracy	81.25%	54.35%–95.95%
Accuracy	99.86%	99.82%–99.90%