Table 3. Concentrations of GDF-15 according to categorical risk factors stratified for the SYNTAX Score.

	All	p	Low Syntax Score: < 23	p	Intermediate Syntax Score: 23–33	p	High Syntax Score: ≥ 33	p
Male	776.3	>0.5	804.4	>0.5	906.2	0.09	934.6	>0.5
Female	764.1		794.1		1248.3		956.7
BMI < 30	756.6	0.03	767	0.02	967.1	0.14	971.8	>0.5
BMI > 30	806.6		890.4		842.3		892.9
No Hypertension	571.6	<0.001	691.3	0.001	957.2	>0.5	814.4	>0.5
Hypertension	854.3		847.1		920.6		971.8
No Diabetes	704.9	<0.001	740.5	<0.001	903	0.03	892.9	0.1
Diabetes	1142		1242		1142.1		1341
No smoking	785.6	0.01	794.1	>0.5	1017.5	0.02	892.9	0.19
Smoking	730.9		807.7		698.1		1143
No Dyslipidemia	712.2	0.002	782.8	>0.5	987.1	>0.5	1431.7	0.07
Dyslipidemia	797.8		800		920.6		892.9
No CAD	673.7	<0.001	753.9	0.003	947.2	>0.5	904.4	0.47
Known CAD	947.7		893.1		941.4		1281.1

Presented are the medians for each group, which were tested for equality by the Mann-Whitney test. CAD denotes coronary artery disease. BMI denotes body mass index.