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

Table 2 Baseline data of patients after propensity score matching

Data	Control group (n = 30)	Observation group (n = 30)	t/χ2/Z	P value
Age (year, mean ± SD)	54.97 ± 7.54	54.83 ± 11.52	0.053	0.958
Sex, n (%)			0.067	0.795
Male	17 (56.67)	16 (53.33)
Female	13 (43.33)	14 (46.67)
BMI (kg/m2, mean ± SD)	22.11 ± 1.54	22.01 ± 1.62	0.237	0.814
Underlying disease, n (%)
Hypertension	7 (23.33)	10 (33.33)	0.739	0.390
Diabetes	10 (33.33)	5 (16.67)	2.222	0.136
CHD	7 (23.33)	4 (13.33)	0.445	0.505
Tumor diameter (cm, mean ± SD)	3.86 ± 0.48	3.81 ± 0.56	0.347	0.730
TNM stage, n (%)			0.701	0.483
I	15 (50.00)	17 (56.67)
II	12 (40.00)	12 (40.00)
III	3 (10.00)	1 (3.33)
Histological type, n (%)			0.842	0839
Adenocarcinoma	11 (36.67)	13 (43.33)
Mucinous adenocarcinoma	10 (33.33)	7 (23.33)
Squamous cell carcinoma	6 (20.00)	6 (20.00)
Other	3 (10.00)	4 (13.33)
Tumor location, n (%)			4.149	0.246
Rectum	12 (40.00)	17 (56.67)
Descending colon	9 (30.00)	3 (10.00)
Ascending colon	6 (20.00)	6 (20.00)
Sigmoid flexure	3 (10.00)	4 (13.33)
ASA grade, n (%)			0.008	0.994
I	12 (40.00)	10 (33.33)
II	10 (33.33)	15 (50.00)
III	5 (16.67)	2 (6.67)
IV	3 (10.00)	3 (10.00)

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