Table I.

Socio-demographic characteristics of HCC cases and matched controls

Variable	Cases			Controls			p
	n = 305	%		n = 1254	%
Age, years (mean, SD)	53.4 (7.8)			53.1 (7.8)			0.54
BMI, kg/m2 (mean, SD)	24.6 (3.7)			24.4 (3.6)			0.56
Gender
Female	101	33.1		392	31.3		0.53
Male	204	66.9		862	68.7
HBsAg
Negative	113	37.1		924	73.7		<0.0001
Positive	188	61.6		324	25.8
Missing	4	1.3		6	0.5
Anti-HCV
Negative	205	67.2		993	79.2		<0.0001
Positive	65	21.3		99	7.9
Missing	35	11.5		162	12.9
Smoking
Never	184	60.3		769	61.3		0.84
Ever	121	39.7		484	38.6
Missing	0	0.0		1	0.1
Alcohol
Never	248	81.3		1068	85.1		0.11
Ever	56	18.4		184	14.7
Missing	1	0.3		2	0.2
LINE-1, %
Continuous (mean, SD)	76.2 (2.2)			76.2 (2.1)			0.88
Q1 (<74.6)	58	19.0		295	23.5		0.22
Q2 (74.6–76.4)	89	29.2		312	24.9
Q3 (76.4–77.8)	83	27.2		327	26.1
Q4 (>77.8)	72	23.6		316	25.2
Missing	3	1.0		4	0.3
logSat2, %
Continuous (mean, SD)	1.97 (0.28)			1.99 (0.26)			0.17
Q1 (<4.3)	95	31.1		308	24.6		0.09
Q2 (4.4–4.6)	69	22.6		311	24.8
Q3 (4.6–4.9)	63	20.7		311	24.8
Q4 (>4.9)	74	24.3		311	24.8
Missing	4	1.3		13	1.0

BMI: missing data in two controls and one case.