Table 2. Differences of uric acid and plasma lipid between the two groups.

Variables	Case-control matching				Propensity score matching
	Control (n=216)	Case (n=216)	P		Control (n=241)	Case (n=241)	P
Cholesterol, mmol/L	3.74 (3.41–4.19)	4.77 (4.14–5.40)	<0.001		3.37 (3.09–3.59)	4.77 (4.14–5.36)	<0.001
Triglyceride, mmol/L	1.18 (0.84–1.72)	1.55 (1.06–2.25)	<0.001		0.98 (0.73–1.37)	1.51 (1.06–2.17)	<0.001
HDL, mmol/L	1.07 (0.96–1.25)	1.09 (0.98–1.31)	0.143		1.08 (0.96–1.26)	1.09 (0.98–1.31)	0.252
LDL, mmol/L	2.30 (1.92–2.60)	3.04 (2.47–3.53)	<0.001		1.93 (1.63–2.17)	3.05 (2.46–3.54)	<0.001

Data were expressed as median (25^th–75^th percentile) and tested by the Mann-Whitney U test.