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. 2016 Apr 1;39(4):945–953. doi: 10.5665/sleep.5660

Figure 2.

Figure 2

Prevalence of restless legs syndrome and periodic limb movement index across chronic kidney disease stages and eGFR quartiles. (A,B) RLS and CKD stages/eGFR quartiles. (C,D) PLM index and CKD stages/eGFR quartiles. CKD, chronic kidney disease; CKD stage 1–2, eGFR ≥ 60 mL/min/1.73 m2 with albuminuria; CKD stage 3, eGFR 30–60 mL/min/1.73 m2; eGFR, glomerular filtration rate, estimated with the Chronic Kidney Disease Epidemiology Collaboration (CKD–EPI) formula; No CKD, eGFR ≥ 60 mL/min/1.73 m2 without albuminuria; Q1-Q4, quartiles of eGFR (30 to 72; 72 to 83; 83 to 93 and 93 to 127 mL/min/1.73 m2); PLM index, index of periodic leg movements (PLM) per hour of sleep; RLS, restless legs syndrome.