Table 1.

Data.

Factors		Experimental group (n = 30)	Control group (n = 30)	X 2	p
Age	≤61	14 (44.67)	15 (50.10)	0.289	0.655
	≥61	16 (57.78)	15 (49.50)
Gender	Male	16 (53.80)	17 (57.68)	0.087	0.799
	Female	14 (46.79)	13 (44.59)
Pathogenic region	Colon cancer	15 (50.50)	13 (44.67)	0.285	0.655
	Rectal cancer	15 (49.50)	17 (57.59)
Pathological pattern	Squamous carcinoma	17 (56.87)	16 (53.68)	0.068	0.815
	Glandular cancer	13 (43.78)	14 (46.90)
BMI (kg/m2)	≤23	18 (60.80)	16 (53.60)	0.288	0.648
	≥23	12 (40.68)	14 (47.78)
Educational level	Below high school	20 (68.78)	21 (70.39)	0.785	0.7891
	High school and above	10 (33.69)	9 (30.48)
Smoking history	Present	14 (47.58)	13 (43.75)	0.068	0.815
	Absent	16 (54.76)	17 (56.48)