Table 1. Demographic characteristic of hepatocellular carcinoma cases and controls.

Variable	Cases (n = 220)		Controls (n = 220)		P
	n	%	n	%
Age distribution (years)
≤30	3	1.4	3	1.4
31–50	45	20.5	45	20.5
51–70	126	57.3	126	57.3
≥71	46	20.9	46	20.9	1
Gender
Male	188	85.5	188	85.5
Female	32	14.5	32	14.5	1
Education level
Elementary	135	61.4	128	58.2
Middle/High school	50	22.7	45	20.5
College or higher	35	15.9	47	21.3	0.06
Marital status
Married	161	73.2	166	75.5
Divorced	12	5.5	10	4.5
Widowed	41	18.6	36	16.3
Single	6	2.7	8	3.7	0.83
Alcohol consumption
None	49	22.3	40	18.2
Low (1–2 times/week)	50	22.7	45	20.5
Medium (3–4 times/week)	72	32.7	80	36.4
High (more than 4 times/week)	49	22.3	55	25.0	0.59
Smoking status
Nonsmokers	65	29.6	77	35.0
Smokers	155	70.4	143	65.0	0.22