Significance of 125I radioactive seed implantation on growth differentiation factor and programmed death receptor-1 during treatment of oral cancer

Table 2 Comparison of general data in the two groups, n (%)

	Research group (n = 89)	Control group (n = 95)	χ2 or t	P value
Age (yr)			0.888	0.376
	49.2 ± 8.6	50.3 ± 8.2
BMI (kg/cm2)			0.963	0.337
	23.62 ± 3.52	24.16 ± 4.05
Disease course (mo)			0.174	0.862
	7.62 ± 4.16	7.51 ± 4.38
Gender			0.870	0.351
Male	62 (69.66)	60 (63.16)
Female	27 (30.34)	35 (36.84)
Smoking			0.095	0.758
Yes	60 (65.26)	62 (65.26)
No	29 (32.58)	33 (34.74)
Drinking			0.684	0.408
Yes	55 (61.80)	53 (55.79)
No	34 (38.20)	42 (44.21)
Preference for betel nut			0.284	0.594
Yes	65 (73.03)	66 (69.47)
No	24 (26.97)	29 (30.53)
Dietary preference			0.432	0.511
Spicy	52 (58.43)	60 (63.16)
Light	37 (41.57)	35 (36.84)
Exercise habits			0.382	0.537
Yes	12 (13.48)	10 (10.53)
No	77 (86.52)	85 (89.47)
Tissue type			0.486	0.975
Squamous cell carcinoma	38 (42.70)	38 (40.00)
Malignant lymphoma	16 (17.98)	15 (15.79)
Mucoepidermoid carcinoma	18 (20.22)	22 (23.16)
Adenoid cystic carcinoma	10 (11.24)	12 (12.63)
Adenocarcinoma	7(7.87)	8 (8.42)
Pathological staging			0.354	0.552
I-II	16 (17.98)	14 (14.74)
III-IV	73 (82.02)	81 (85.26)
Metastasis			0.000	0.991
Yes	75 (84.27)	80 (84.21)
No	14 (15.73)	15 (15.79)
Degree of differentiation			0.368	0.051
Poorly differentiated	79 (88.76)	80 (84.21)
Moderately and highly differentiated	10 (11.24)	15 (15.79)
Nationality			0.812	0.368
Han	85 (95.51)	89 (93.68)
Ethnic minorities	4 (4.49)	6 (6.32)
Living environment			0.367	0.545
Cities and towns	62 (69.66)	70 (73.68)
Countryside	27 (30.34)	25 (26.32)