Influences of Daily Life Habits on Risk Factors of Stroke Based on Decision Tree and Correlation Matrix

Table 4

Confusion matrix achieved by the optimized C4.5 algorithm.

	Risk level analyzed by optimized C4.5 algorithm						Recall
	H	M	Y	T	N	L
Risk level analyzed by physicians
H	1288	127	0	0	0	0	0.910
M	44	1502	0	0	0	0	0.972
Y	0	0	165	0	0	0	1.000
T	2	0	0	51	0	0	0.962
N	0	0	0	0	679	255	0.727
L	0	0	0	0	182	596	0.766
Precision	0.966	0.922	1.000	1.000	0.789	0.700
Accuracy	87.53%
Kappa	0.8344