Table 1. Comparison of the ages between patients with benign or malignant lesions.

Size (mm)	Age		P
	Malignant pulmonary nodules	Benign pulmonary nodules
≤10	55.44±10.48	50.70±13.44	0.231
11-20	59.26±10.73	50.65±13.25	<0.001
>20	61.03±11.45	51.90±14.70	<0.001
Total	59.77±11.09	51.17±13.79	<0.001