KRAS status predicted by pretreatment MRI radiomics was associated with lung metastasis in locally advanced rectal cancer patients

Table 1 Demographic and clinical characteristics

	Training cohort (n = 73)		Testing cohort (n = 30)		p value
	n/mean	%/SD	n/mean	%/SD
Age (years)	57.18	10.66	55.33	6.33	0.379
Sex
Female	23	32.39	5	16.67	0.124
Male	50	70.42	25	83.33
CEA
＞5 ng/ml	30	42.25	9	30.00	0.292
≤5 ng/ml	43	60.56	21	70.00
Pathologic differentiation
High	4	5.63	3	10.00	0.346
Moderate	48	67.61	16	53.33
Poor	5	7.04	5	16.67
Location
≤5 cm	33	46.48	13	43.33	0.348
5–10 cm	39	54.93	15	50.00
>10 cm	1	1.41	2	6.67
Clinical T stage
cT2	3	4.23	0	0.00	0.396
cT3	54	76.06	21	70.00
cT4	16	22.54	9	30.00
KRAS
Wild	46	63.01	21	70.00	0.499
Mutant	27	36.99	9	30.00
Pathologic T stage
pT0	5	7.04	5	16.67	0.288
pT1	3	4.23	1	3.33
pT2	24	33.80	8	26.67
pT3	41	57.75	15	50.00
pT4	0	0.00	1	3.33
Pathologic N stage
pN0	39	54.93	20	66.67	0.278
pN1	29	40.85	7	23.33
pN2	5	7.04	3	10.00

ISSN: 1471-2342