High serum uric acid level is a mortality risk factor in peritoneal dialysis patients: a retrospective cohort study

Table 3 Cardiovascular mortality associated with quintiles of serum uric acid in unadjusted and multivariable-adjusted Cox models

Variants	Event	Unadjusted Model 1	P value	Multivariable adjusted Model 2	P value	Multivariable adjusted Model 3	P value
Quintile of uric acid level (mg/dL)	408/9405 (4.0)
Q1(< 6.06)	131/1865 (7.0)	1.667 (1.265–2.197)	<0.001	1.327 (0.986–1.786)	0.062	1.166 (0.820–1.657)	0.392
Q2(6.06–6.67)	114/1877 (6.0)	1.341 (1.010–1.782)	0.043	1.268 (0.942–1.706)	0.118	1.311 (0.932–1.843)	0.120
Q3 (6.68–7.27)	82/1892 (4.3)	Reference		Reference		Reference
Q4 (7.28–8.03)	86/1878 (4.6)	1.152 (0.851–1.559)	0.359	1.088 (0.791–1.497)	0.602	1.146 (0.796–1.648)	0.463
Q5 (≥8.04)	102/1893 (5.4)	1.555 (1.162–2.080)	0.003	1.259 (0.916–1.731)	0.156	1.144 (0.786–1.665)	0.482

Note: Reference group is Q3 group (6.68–7.27 mg/dL). Values are presented as number (%) of events or hazard ratio (95% confidence interval). Q, quintile
Model 1 are unadjusted. Model 2 are adjusted for the factors of age, sex, body mass index. Model 3 are adjusted for the factors of model 1 covariates and diabetes mellitus, cardiovascular disease, residual renal function, hemoglobin, serum albumin, serum potassium, serum natrium, serum phosphorus, serum calcium, serum parathyroid hormone, serum creatinine, and fasting plasma glucose

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