Table 5.

Confusion matrix on the testing set among two experienced rheumatologists, one experienced radiologist, and AI model.

Rheumatologists/radiologists	AI model				Total	Accuracy
	0	1	2	3
0	3496	269	144	38	3947	0.886
1	82	276	22	28	408	0.677
2	26	13	138	10	187	0.738
3	18	9	26	469	522	0.899
Total	3622	567	330	545	5064	0.865

AI, artificial intelligence.