Table 3.

Integrating different non-invasive heart disease risk factors.

Techniques	Risk attributes	Sensitivity (%)	Specificity (%)	Accuracy (%)
Decision tree	Systolic BP, diastolic BP, age, heredity	78	80	77.3
	Systolic BP, diastolic BP, age, BMI	72	70	70.9
	Age, healthy diet, BMI	68	61	63.3
	Systolic BP, diastolic BP, age, physical activity	53	60	58.6
	Healthy diet, BMI, physical activity, age	58	41	50.9
	Healthy diet, physical activity, age, systolic BP, diastolic BP	45	43	42.5
	Physical activity, age, healthy diet, BMI, systolic BP, diastolic BP	38	30	38.2
	Age, physical activity, smoking, systolic BP, diastolic BP, healthy diet, alcohol consumption, BMI	30	28	42.7
K nearest neighbor	Age, healthy diet, alcohol consumption, smoking	42	45	38.2
	Age, BMI, healthy diet	70	60	67.9
	Age, BMI, alcohol consumption, smoking, sex	52	50	48.9
	BMI, systolic BP, diastolic BP, age, physical activity	38	35	42.7
	BMI, systolic BP, diastolic BP, age	68	74	72.5
	Age, systolic BP, BMI, diastolic BP, heredity	68	70	72.8
Random forest	Systolic BP, diastolic BP, age, healthy diet, smoking	51	48	45.4
	BMI, age, systolic BP, diastolic BP, heredity	72	78	78.9
	Alcohol consumption, physical activity, age, systolic BP, diastolic BP, BMI, smoking, healthy diet	35	45	58.7
	Age, sex, physical activity, BMI,	32	34	40.8
	Age, sex, physical activity, BMI, systolic BP, diastolic BP	39	45	42.6
Support vector machine	Systolic BP, diastolic BP, age	72	62	76.1
	Systolic BP, diastolic BP, age, BMI, heredity	70	78	75.2
	Healthy diet, age, BMI	41	53	50.9
	Systolic BP, diastolic BP, age, BMI, physical activity	50	44	51.6
	BMI, physical activity, alcohol consumption, age	49	50	52.4
	Age, alcohol consumption, BMI, healthy diet	41	59	52.2
Naive Bayes	Systolic BP, diastolic BP, age	74	78	75.1
	Age, alcohol consumption, healthy diet, sex, BMI	40	44	48.8
	Systolic BP, diastolic BP, age, BMI, heredity	68	75	77.2
	Systolic BP, diastolic BP, alcohol consumption, heredity, age, BMI, smoking, healthy diet, sex, physical activity,	46	51	50.6