Tree-Based Risk Factor Identification and Stroke Level Prediction in Stroke Cohort Study

Table 2

Correlations and NMI values for the data.

Factor	2016		2017		2018
	Age ()	0.1710	0.0284	0.1894	0.0312	0.1650	0.0270
Gender ()	-0.0165	0.0034	-0.0020	0.0028	0.0101	0.0020
History of stroke ()	0.2021	0.1064	0.2163	0.1175	0.2258	0.1249
History of TI ()	-0.2973	0.2129	-0.3191	0.2274	-0.3080	0.2173
Family history of stroke ()	0.3933	0.1722	0.3832	0.1583	0.3718	0.1390
AF or VHD ()	0.2253	0.0814	0.2208	0.0863	0.2151	0.0711
Hypertension ()	0.7232	0.4331	0.7623	0.4772	0.7926	0.5196
Dyslipidemia ()	0.2538	0.0858	0.1974	0.0764	0.1409	0.0668
Diabetes ()	0.5057	0.2921	0.4848	0.2834	0.4817	0.2605
Smoking history ()	0.2469	0.0717	0.1870	0.0553	0.2310	0.0644
AO or obesity ()	0.1630	0.0513	0.1321	0.0337	0.1569	0.0351
Lack of exercise ()	0.3247	0.0291	0.2957	0.1558	0.3531	0.1551

represents the Spearman correlation between and represents the Pearson correlation between