Clinical effect of laparoscopic radical resection of colorectal cancer based on propensity score matching

Table 1 Patients’ baseline data

Data	Control group (n = 43)	Observation group (n = 57)	t/χ2/Z	P value
Age (yr, mean ± SD)	56.44 ± 7.48	52.37 ± 11.71	2.116	0.037
Sex, n (%)			0.220	0.887
Male	24 (55.81)	31 (54.39)
Female	19 (44.19)	26 (45.61)
BMI (kg/m2, mean ± SD)	22.06 ± 1.50	22.41 ± 1.61	1.102	0.273
Underlying disease, n (%)
Hypertension	11 (25.58)	19 (33.33)	0.701	0.402
Diabetes	14 (35.56)	10 (17.54)	3.029	0.082
CHD	8 (18.60)	12 (21.05)	0.092	0.762
Tumor diameter (cm, mean ± SD)	3.93 ± 0.48	3.70 ± 0.52	2.188	0.031
TNM stage, n (%)			1.142	0.254
I	20 (46.51)	32 (56.14)
II	17 (39.53)	21 (36.84)
III	6 (13.95)	4 (7.02)
Histological type, n (%)			0.256	0.968
Adenocarcinoma	17 (39.53)	25 (43.86)
Mucinous adenocarcinoma	12 (27.91)	14 (24.56)
Squamous cell carcinoma	9 (20.93)	11 (19.30)
Other	5 (11.63)	7 (12.28)
Tumor location, n (%)			8.501	0.037
Rectum	20 (46.51)	24 (42.11)
Descending colon	13 (30.23)	7 (12.28)
Ascending colon	6 (13.95)	11 (19.30)
Sigmoid flexure	4 (9.30)	15 (26.32)
ASA grade, n (%)			2.026	0.043
I	18 (41.86)	14 (24.56)
II	16 (37.21)	22 (38.60)
III	6 (13.95)	15 (26.32)
IV	3 (6.98)	6 (10.53)

BMI: Body mass index; CHD: Coronary heart disease; TNM: Tumor node metastasis; ASA: American Society of Anesthesiologists.