Table 1.

Comparison of general data between the two groups, n (%)

Group	n	Male	Age (yr)	BMI (kg/m2)	Smoking	Drinking
Observation	240	168 (70.00)	60.50 ± 9.28	23.30 ± 5.44	103 (42.92)	63 (26.25)
Control	150	98 (65.33)	59.22 ± 10.11	22.83 ± 6.50	56 (37.33)	34 (22.67)
t/χ2		0.927	1.280	0.769	1.192	0.634
P value		0.336	0.201	0.442	0.275	0.426

BMI: Body mass index.