Risk factors for the formation of double-contour sign and tophi in gout

Table 4 Logistic regression analysis of risk factors for double-contour sign in gout patients

Variables	P	OR	95% CI
Age	0.067	1.051	0.997–1.108
UA (μmol/L)	0.011	1.006	1.001–1.010
Duration of gout	0.062	2.322	0.958–5.625
Gout attacks over the past 1 year	0.067	2.063	0.951–4.474
The highest UA level	0.014	7.570	1.511–37.930
Peak blood UA level	0.937	0.962	0.366–2.529
Drug intervention history in the intermittent period	0.041	2.468	1.036–5.876
History of US	0.039	8.234	1.117–60.710
Constants	< 0.001

UA uric acid, OR odds ratio, CI confidence interval. P < 0.05 was considered as significantly different

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