Cancer Imaging

Table 1 Patient characteristics in the training and validation sets for IASLC grading

From: Differentiating high-grade patterns and predominant subtypes for IASLC grading in invasive pulmonary adenocarcinoma using radiomics and clinical-semantic features

Variables			Training set (n = 370)			Validation set (n = 159)
	IASLC 1	IASLC 2	IASLC 3	P value	IASLC 1	IASLC 2	IASLC 3	P value
Age (years)	56.512 ± 9.02	58.877 ± 8.878	60.521 ± 9.806	0.017	56.933 ± 10.826	57.543 ± 8.831	58.939 ± 8.119	0.716
Gender				0.046				0.288
Male	22	51	127		6	13	41
Female	19	63	88		9	33	57
Diameter (cm)	1.82 ± 0.697	1.864 ± 0.973	2.445 ± 1.102	\(\:<\)0.001	1.377 ± 0.365	1.792 ± 0.922	2.368 ± 0.991	\(\:<\)0.001
Types				\(\:<\)0.001				\(\:<\)0.001
Solid	3	85	187		1	30	80
Subsolid	38	29	28		14	16	18
Nodule location				0.035				0.051
Peripheral	41	110	196		15	46	89
Central	0	4	19		0	0	9
Shape				0.179				0.002
Irregular	18	35	63		11	16	27
Regular	23	79	152		4	30	71
Lobulation				0.343				0.001
No	16	40	63		12	15	30
Yes	25	74	152		3	31	68
Spiculation				0.001				\(\:<\)0.001
No	26	59	77		13	24	29
Yes	15	55	138		2	22	69
Cavitation				0.088				0.231
No	41	108	196		15	40	91
Yes	0	6	19		0	6	7
Vacuole				0.017				0.162
No	33	101	162		11	42	79
Yes	8	13	53		4	4	19
Air bronchograms				0.003				0.048
No	39	79	152		14	40	71
Yes	2	35	63		1	6	27
Pleural traction				0.004				0.010
No	18	49	57		9	17	23
Yes	23	65	158		6	29	75
Vascular convergence				0.357				0.926
No	14	53	98		7	20	46
Yes	27	61	117		8	26	52
Obstructive pneumonia				0.001				0.018
No	41	109	184		15	46	86
Yes	0	5	31		0	0	12

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