Table 3.

First principle components of the parameters for metabolic syndrome.

Parameters	First PCA loading
	Male		Female
	Age included	Age excluded	Age included	Age excluded
Age (years)	0.389	–	0.700	–
Waist circumference (cm)	0.666	0.688	0.681	0.692
Pulse pressure (mmHg)	0.321	0.227	0.535	0.482
Fasting blood sugar (mg/dL)	0.489	0.403	0.519	0.526
Triglyceride (mg/dL)	0.625	0.713	0.614	0.690
High-density lipoprotein (mg/dL)	− 0.599	− 0.657	− 0.558	− 0.629
Eigenvalue	1.685	1.627	2.198	1.859
Total variance (%)	28.08	32.54	36.63	37.18

Pulse pressure = systolic blood pressure – diastolic blood pressure. All parameters are P < 0.001.

PCA principal component analysis.