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Table 2 Survival analysis – propensity matched population (n = 1092)

From: Association of restless legs syndrome and mortality in end-stage renal disease: an analysis of the United States Renal Data System (USRDS)

Variable β SE HR P
Incidence age, years 0.03 0.005 1.03 <.0001
Female −0.02 0.11 0.98 0.9
Race 0.22 0.09 1.25 0.01
 White −0.53 0.72 0.59 0.5
 Black −0.82 0.73 0.44 0.3
 Asian −1.15 0.79 0.32 0.1
 Native American −1.45 1.02 0.23 0.15
Ethnicity
 Non-Hispanic/Latino 0.26 0.19 1.3 0.2
Vascular access type
 AV Fistula −0.39 0.42 0.68 0.4
 Graft −0.11 0.46 0.89 0.8
 Catheter −0.07 0.39 0.93 0.9
Body mass index (kg/m2) −0.006 0.009 0.99 0.5
Serum albumin (g/dl) −0.27 0.08 0.77 0.0005
Cardiovascular
 Coronary artery disease 0.14 0.13 1.15 0.3
 Congestive heart failure 0.34 0.12 1.41 0.004
 Cerebrovascular disease 0.17 0.17 1.19 0.3
 Peripheral vascular disease 0.24 0.15 1.27 0.1
 Hypertension −0.43 0.15 0.65 0.003
Other
 Diabetes 0.1 0.12 1.1 0.4
 Cancer 0.39 0.18 1.48 0.03
Psychological disorders
 Major depressive disorder 0.32 0.72 1.37 0.7
 Dysthymic disorder 0.63 0.59 1.88 0.4
 Anxiety 0.46 0.46 1.57 0.3
Tobacco dependence 0.14 0.22 1.16 0.5
Case type
 No sleep disorders (NSD) 0.15 0.14 1.16 0.3