Predictive modeling based on tumor spectral CT parameters and clinical features for postoperative complications in patients undergoing colon resection for cancer

Insights into Imaging

Table 1 Comparisons of clinical baseline characteristics between two groups of colon cancer patients (n = 85)

Clinical characteristics	Without POCs	With POCs	z/χ² value	p value
Clinical characteristics	n = 58	n = 27	z/χ² value	p value
Age (years)^c	65 (56, 70)	68 (62, 74)	− 1.318^a	0.188
Gender			4.061^b	0.044^*
Male	37 (63.8)	23 (85.2)
Female	21 (36.2)	4 (14.8)
Anemia			0.000^b	1
Yes	10 (17.2)	4 (14.8)
No	48 (82.8)	23 (85.2)
Diabetes			0.002^b	0.961
Yes	11 (19.0)	5 (18.5)
No	47 (81.0)	22 (81.5)
Hypertension			0.280^b	0.597
Yes	25 (43.1)	10 (37.0)
No	33 (56.9)	17 (63.0)
TNM stage			4.927^b	0.164
I	14 (24.1)	7 (25.9)
II	21 (36.2)	4 (14.8)
III	20 (34.5)	13 (48.2)
IV	3 (5.2)	3 (11.1)
Degree of cell differentiation			2.567^b	0.109
Poor	12 (20.7)	10 (37.0)
Moderate	46 (79.3)	17 (63.0)
VFA (cm²)^c	122.74 (83.09, 138.52)	158.20 (147.84, 168.76)	− 3.880^a	0.000^*
VFA/SFA^c	0.80 (0.59, 1.09)	1.28 (0.92, 1.84)	− 3.747^a	0.000^*
Albumin (g/L)			0.706^b	0.401
< 35	18 (31.0)	6 (22.2)
> 35	40 (69.0)	21 (77.8)
HER-2			0.292^b	0.589
Positive	3 (5.2)	3 (11.1)
Negative	55 (94.8)	24 (88.9)
Ki-67			0.001^b	0.974
Positive	52 (89.7)	25 (92.6)
Negative	6 (10.3)	2 (7.4)
EGFR			3.931^b	0.047^*
Positive	40 (68.9)	24 (88.9)
Negative	18 (31.1)	3 (11.1)

POCs postoperative complications, TNM tumor node metastasis, VFA visceral fat area, SFA subcutaneous fat area, HER-2 human epidermal growth factor receptor 2, EGFR epidermal growth factor receptor
^*Values denote p < 0.05 and the difference is statistically significant
^aValue indicates that the statistic is z-value
^bValues express that the statistic is χ² value
^cValues are expressed as median (upper quartile; lower quartile), other values are expressed as number (percentage)