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

Table 2 All-cause 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)	1226/9405 (13.0)
Q1(< 6.06)	334/1865 (17.9)	1.888 (1.577–2.259)	< 0.001	1.434 (1.181–1.742)	< 0.001	1.162 (0.945–1.427)	0.154
Q2(6.06–6.67)	245/1877 (13.1)	1.278 (1.056–1.547)	0.012	1.180 (0.962–1.447)	0.112	1.160 (0.938–1.434)	0.172
Q3 (6.68–7.27)	185/1892 (9.8)	Reference		Reference		Reference
Q4 (7.28–8.03)	226/1878 (12.0)	1.341 (1.104–1.628)	< 0.001	1.253 (1.015–1.547)	0.036	1.335 (1.073–1.662)	0.009
Q5 (≥8.04)	236/1893 (12.5)	1.595 (1.316–1.934)	0.048	1.481 (1.200–1.828)	< 0.001	1.482 (1.187–1.849)	0.001

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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