2.

A组患者临床和CT影像特征单因素分析

Univariate analysis of clinical and CT image characteristics of the patients in group A

Variable		Benign	Malignant	P
CT: computed tomography.
Age (yr)		54±11	60±9	< 0.01
Diameter (cm)		1.62±0.70	2.00±0.74	< 0.01
Gender	Male	77 (49.68%)	84 (51.85%)	0.699
	Female	78 (50.32%)	78 (48.15%)
Smoking history	Yes	38 (24.52%)	50 (30.86%)	0.207
	No	117 (75.48%)	112 (69.14%)
Family history of cancer	Yes	9 (5.81%)	33 (20.37%)	< 0.01
	No	146 (94.19%)	129 (79.63%)
Previous cancer history	Yes	15 (9.68%)	42 (25.93%)	< 0.01
	No	140 (90.32%)	120 (74.07%)
Position (1)	Upper lobe	72 (46.45%)	76 (46.91%)	0.934
	None-upper lobe	83 (53.55%)	86 (53.09%)
Position (2)	Left side	66 (42.58%)	60 (37.04%)	0.313
	Right side	89 (57.42%)	102 (62.96%)
Clear border	Yes	122 (78.71%)	158 (97.53%)	< 0.01
	No	33 (21.29%)	4 (2.47%)
Smooth edge	Yes	42 (27.10%)	8 (4.94%)	< 0.01
	No	113 (72.90%)	154 (95.06%)
Lobulation	Yes	91 (58.71%)	144 (88.89%)	< 0.01
	No	64 (41.29%)	18 (11.11%)
Spiculation	Yes	39 (25.16%)	110 (67.90%)	< 0.01
	No	116 (74.84%)	52 (32.10%)
Vascular convergence	Yes	7 (4.52%)	9 (5.56%)	0.673
	No	148 (95.48%)	153 (94.44%)
Pleural retraction sign	Yes	48 (30.97%)	73 (45.06%)	0.010
	No	107 (69.03%)	89 (54.94%)
Air bronchogram	Yes	11 (7.10%)	57 (35.19%)	< 0.01
	No	144 (92.90%)	105 (64.81%)
Vocule sign	Yes	15 (9.68%)	40 (24.69%)	< 0.01
	No	140 (90.32%)	122 (75.31%)
Cavity	Yes	5 (3.23%)	5 (3.09%)	0.960
	No	150 (97.77%)	157 (96.91%)
Calcification	Yes	15 (9.68%)	5 (3.09%)	0.022
	No	140 (90.32%)	157 (96.91%)