Table 2.

Diagnostic performance of DL-based CT severity score

	Total investigated time (April–December 2020)	Spring wave (April–June 2020)	Autumn wave (August–December 2020)
Prevalence, %	51.5	25.1	55.8
Sensitivity, % (95% CI)	40.1 (36.3–43.9)	18.2 (8.2–32.7)	41.7 (37.7–45.7)
Specificity, % (95% CI)	80.3 (76.9–83.4)	84.7 (77.4–90.4)	79.1 (75.2–82.7)
Positive predictive value, % (95% CI)	68.4 (63.5–73.1)	28.6 (13.2–48.7)	71.6 (66.6–76.2)
Negative predictive value, % (95% CI)	55.7 (52.4–59.6)	75.5 (67.7–82.2)	51.8 (48.1–55.5)
Accuracy, % (95% CI)	59.6 (56.8–62.3)	68.0 (60.5–74.8)	58.2 (55.2–61.2)