Table 3.

Confusion matrix of three-best performed algorithms in multi-class classification.

Algorithms	Predicted class	Actual class
		Mild	Moderate	Severe
eXtreme Gradient Boosting	Mild	123	23	8
	Moderate	14	37	14
	Severe	0	5	50
Random Forest	Mild	123	23	8
	Moderate	14	36	16
	Severe	0	6	48
k-Nearest Neighbors	Mild	131	36	6
	Moderate	6	25	15
	Severe	0	4	51