Lin et al. studied 115 patients with type 2 diabetes mellitus commencing dialysis.54 Of these, 53 were early referrals Cobimetinib price (seen >6 months before dialysis) and 62 late referrals. Early referred patients had better survival at 5 years (72.4% vs 35.2%, P < 0.05) and better residual renal function (P < 0.001). Marron et al. studied 621 patients who commenced dialysis in Spain in 2002.55 Permanent access at initiation of dialysis was considered as planned (49% of patients). Seventy-six per cent of patients had more than 3 months of predialysis follow up but only

half of these received predialysis education. Education was associated with a planned start (73.4% vs 26%) and more peritoneal dialysis (31% vs 8.3%). Non-planned start was associated with older age, fewer nephrology visits, less education and more haemodialysis. In 2006, Marron et al. also reviewed 1504 patients who commenced RRT in Spain in 2003.56 Fifty-four per cent of patients had planned initiation of dialysis; they were younger, had a longer period of predialysis follow up, more predialysis education, were more likely to have permanent access and more commonly were on peritoneal dialysis (27% vs 8%) all with P < 0.001. McLaughlin et al. performed

an economic evaluation of early versus late referral using a Markov (decision analysis tree) model.57 Early referral occurred www.selleckchem.com/products/r428.html when the creatinine clearance was 20 mL/min. In the model, early referral produced cost savings, improved survival, led to more life-years free of RRT and reduced duration of hospitalization. These findings were not reversed with a sensitivity analysis using published US and Canadian data. Navaneethan et al. in a retrospective analysis of 204 patients, defined early referral as GFR >15 mL/min and late referral as <15 mL/min.58 Twenty-two per cent were referred late with non-diabetic status (OR 2.42) and Charlson comorbidity index (OR 1.17) as significant associations. Not surprisingly, late referrals had worse biochemical indices and

less permanent vascular access at initiation of dialysis. The late referral group had twice as many deaths but this did not reach statistical significance. Obialo et al., in a study of 460 patients, defined late referral as 1–3 months before initiation Cell press of dialysis (37%), ultra-late as <1 month (46%) and early as >3 months (17%).59 Mortality (over a 4-year period) was 40% for ultra-late, 26% for late and 15% for early patients. Temporary venous catheter use was 92%, 70% and 39%, respectively. Delayed referral was associated with poor socioeconomic status, denial and lack of awareness. Orlando et al. performed a retrospective study of 1553 patients and defined CKD as a creatinine of >1.4 mg/dL.60 Patients with nephrology care progressed to more advanced CKD stages more slowly than those with only primary care. Survival was better in CKD stages III and IV for patients who had nephrology care (HR 0.80 and 0.75, respectively).

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