Smoking is not associated with nonalcoholic fatty liver disease

Table 2 Comparative characteristics in liver function tests between smokers and nonsmokers (including only subjects with hepatic steatosis)

Variable	Smokers	Non-smokers	P
	(n = 87)(mean ± SD)	(n = 168)(mean ± SD)
Albumin (g/L)	4.07 ± 0.23	4.10 ± (0.37)	NS
Total bilirubin (mg/L)	0.94 ± 0.31	0.93 ± 0.37	NS
ALT (UI/L)	43.7 ± 24.6	49.07 ± 40.7	NS
AST (UI/L)	32.3 ± 13.0	35.2 ± 22.9	NS
Alkaline phosphatase (UI/L)	71.2 ± 18.0	74.7 ± 24.0	NS
Lactate dehydrogenase (UI/L)	154.9 ± 24	160.6 ± 30	NS
ALT 2 times upper normal limit value n (%)	2 (2.4)	8 (4.8)	NS