Table 3.

The interaction of adjusted regression coefficients and 95% CIs of SUA by metals according to smoking status

Metals	Non-current smokers* (n=102)		Current smokers (n=84)		Pfor interaction†	P_FDR‡
	β (95% CI)†§	P value†	β (95% CI)†§	P value†
Vanadium	−3.1 (−27.2 to 21.1)	0.804	−55.6 (−80.9 to –30.3)	<0.001	0.007	0.028
Chromium	−11.1 (−35.6 to 13.4)	0.375	−46.8 (−74.0 to –19.7)	0.001	0.121	0.161
Tin	−5.8 (−15.0 to 3.3)	0.212	−24.3 (−39.2 to –9.4)	0.001	0.085	0.161
Lead	−20.1 (−42.8 to 2.6)	0.083	−14.7 (−27.5 to –2.0)	0.023	0.789	0.789

*Non-current smokers included nine ever smokers and 93 non-smokers.

†Adjusted for age, gender, drinking, physical activity, employment duration, seafood intake, urinary creatinine, BMI, hypertension, diabetes and coronary heart disease.

‡FDR-adjusted for four interaction tests.

§The effect estimate were shown as changes per IQR increase of the metals on SUA.

FDR, false discovery rate; SUA, serum uric acid.