Table 3.

Determination of predictors of SARS-CoV-2 infection during a 2-year follow-up. We present a univariate and multivariate logistic regression of several clinical, demographic, and laboratory parameters of patients. The variables which were included in the multivariate model were those which had a p-value below 0.2 in the univariate analysis. Variables that were considered predictors of SARS-CoV-2 infection were those with a p-value below 0.05 in the final model. Hazard ratios, the 95% confidence interval (95%CI), and the p-value are detailed.

	Univariate Analysis				Multivariate Analysis
Variable	Hazard Ratio	95% CI		p-Value	Hazard Ratio	95% CI		p-Value
Male	1.551	0.854	2.816	0.149	1.597	0.875	2.915	0.127
Age > 60 years	2.634	1.360	5.101	0.004	2.630	1.352	5.118	0.004
Diabetes	1.909	1.051	3.465	0.034	1.916	1.053	3.485	0.033
Hypertension	1.192	0.427	3.328	0.737
Heart failure	1.315	0.634	2.731	0.462
Vascular access (fistula)	1.415	0.768	2.604	0.265
Residual diuresis	0.819	0.430	1.561	0.545
Hemodialysis vintage	1.004	0.991	1.017	0.568
Dry weight	0.973	0.938	1.008	0.128	0.981	0.946	1.017	0.301
spKt/V	1.904	0.469	7.738	0.368
Use of ARBs	1.076	0.556	2.083	0.829
Use of CCBs	0.798	0.424	1.500	0.483
Use of loop diuretics	1.387	0.702	2.737	0.346
Use of vitamin D analogs	0.959	0.475	1.938	0.908
Use of phosphate binders	1.073	0.454	2.534	0.873
Use of calcimimetics	0.899	0.419	1.931	0.786
Use of ESAs	0.840	0.391	1.803	0.654
Blood ureic nitrogen	0.987	0.963	1.010	0.261
Intact PTH	1.000	0.999	1.000	0.420
25-OH vitamin D	0.982	0.948	1.016	0.295
Serum phosphate	0.941	0.722	1.226	0.654
Total serum calcium	1.060	0.789	1.425	0.697
Ferritin	1.000	0.999	1.002	0.580
Hemoglobin	1.091	0.884	1.347	0.418
Intact FGF23 (>p50)	1.917	1.041	3.530	0.037	1.920	1.035	3.562	0.039