New scoring system for the evaluation obstructive degrees based on computed tomography for obstructive colorectal cancer

Table 1 Baseline characteristics of study patients stratified by computed tomography-based obstructive degree severity, n (%)

Characteristic	CTOD non-severe (CTOD 1-2)	CTOD severe (CTOD 3)	P value
PNP	0.0896	0.0689	0.405
P/D	4.080	7.120	< 0.001
Age (> 65 years)	71 (50.4)	15 (46.9)	0.722
Sex (female)	58 (41.1)	14 (43.8)	0.786
BMI (≥ 18.5 kg/m²)	108 (83.7)	23 (85.2)	0.850
ALB (≥ 35 g/L)	72 (51.1)	14 (43.8)	0.455
CEA (> 5ug/L)	71 (51.4)	18 (58.1)	0.505
Hb (< 9 g/L)	20 (14.2)	4 (12.5)	0.803
ASA 3-4	42 (29.8)	12 (37.5)	0.395
Surgical history	34 (24.1)	11 (34.3)	0.232
Comorbidities	79 (56.0)	18 (56.3)	0.982
SEMS	44 (31.2)	13 (40.6)	0.306
Left-sided	81 (57.4)	21 (65.6)	0.396
Surgical method			0.647
Stoma/SEMS	16 (11.4)	4 (12.5)
SBTS	33 (23.4)	10 (31.3)
Resection	92 (65.2)	18 (56.3)
Surgical time (minutes)	204.4	209.07	0.223
Bleeding (mL)	100	100	0.811
Total number of LN	19	19	0.675
Positive LN	1	1	0.184
Complication	62 (44.0)	21 (65.6)	0.027
SAE	20 (14.2)	5 (15.6)	0.834
Mortality within 30 days	1 (0.7)	0 (0.0)	1.000
Re-bowel obstruction	4 (2.8)	2 (6.3)	0.307
ICU stay	13 (9.2)	3 (9.4)	0.978
Pneumonia	21 (14.9)	11 (34.4)	0.010
Incision infection	21 (14.9)	3 (9.4)	0.415
pT 4 stage	51 (36.2)	11 (34.4)	0.981
pN 1-2 stage	81 (57.4)	18 (56.3)	0.981
pM 1 stage	42 (29.8)	5 (15.6)	0.104
Sepsis	5 (3.5)	1 (3.1)	1.000
Chemotherapy	74 (52.5)	14 (43.8)	0.502
Gas time (day)	3	3	0.869
Oral intake (day)	4	4	0.625
Total hospital stay (day)	19	25.5	0.004
Post-surgery stay (day)	12	12.5	0.021

CTOD: Computed tomography-based obstructive degree; PNP: Proportion of nonparenchymal areas at the site of obstruction; P/D: Proximal to distal obstruction; BMI: Body mass index; ALB: Albumin; CEA: Carcinoembryonic antigen; Hb: Hemoglobin; LN: Lymph node; ICU: Intensive care unit; ASA: American Society of Anesthesiologists; SAE: Serious adverse event; SEMS: Self-expandable metallic stents; SBTS: Stenting as bridge to surgery.