Table 4. Correlations between fibroblast growth factor (FGF)-21 and biochemical parameters.

	Smoker (n = 40)		Never-smoker (n = 40)
	r	P-value	r	P-value
AST	0.18	0.12	0.09	0.42
ALT	*0.30	0.008	0.10	0.39
γGTP	**0.39	<0.001	0.12	0.29
TC	*0.34	0.003	0.02	0.83
TG	0.22	0.06	0.04	0.73
HDL-C	−0.15	0.18	−0.04	0.70
FPG	0.13	0.26	0.20	0.08
HbA1c	0.08	0.49	−0.01	0.95

*P < 0.01, **P < 0.001.

Abbreviations are as in Table 1.