. 2022 Mar 17;30(1):313–320. doi: 10.1007/s12350-022-02940-7

Table 2.

Confusion matrices of risk categories between DL-CACS and manual CACS. Weighted kappa value was 0.977

Manual CACS				Total^a	Underestimation^b	Overestimation^b	Concordance^b
Manual CACS	1-100	101-400	> 400	Total^a	Underestimation^b	Overestimation^b	Concordance^b
0	1	0	0	1	0 (0%)	1 (100%)	0 (0%)
1-100	49	0	0	49	0 (0%)	0 (0%)	49 (100%)
101-400	1	23	2	26	1 (3.8%)	2 (7.7%)	23 (88.5%)
>400	0	0	36	36	0 (0%)	0 (0%)	36 (100%)

CACS coronary artery calcium scoring; DL deep learning

^an = 112 scans from 56 patients

^b i.e., manual coronary artery calcium scoring as standard of reference