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Excess mortality attributable to chronic kidney disease. Results from the PIRP project

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Abstract

Although chronic kidney disease (CKD) has a high mortality rate, the estimation of CKD mortality burden in the general population may be challenging because CKD is not always listed as a cause of death in mortality registries. To overcome this limitation, relative survival was used to estimate the excess mortality attributable to CKD as compared to the general population using data of patients registered in the Prevenzione Insufficienza Renale Progressiva (PIRP) registry since 2005 and were followed up until 2013. Relative survival was the ratio of survival observed in CKD patients to the expected survival of the general population. Multivariate parametric survival analysis was used to identify factors predicting excess mortality. The relative survival of CKD patients at 9 years was 0.708. Survival was significantly lower in CKD patients with cardiovascular comorbidities, proteinuria, diabetes, anemia and high phosphate levels and in advanced CKD stages, males, older patients and those who underwent dialysis. Relative survival is a viable method to determine mortality attributable to CKD. Study limitations are that patients are representative only of CKD patients followed by nephrologists and that our follow-up duration may be relatively short as a model for mortality.

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Acknowledgments

The study was presented at the Poster Session CKD: Epidemiology and Outcomes—III at the ASN Kidney Week 2014 Annual Meeting, November 13-16 in Philadelphia, PA. De Amicis S., Ospedale G. Da Saliceto, Piacenza; David S., Ospedale Maggiore, Parma; Corradini M., Arcispedale S.Maria Nuova, Reggio Emilia; Caruso F., Ospedale Ramazzini, Carpi; Olmeda F., Ospedale Policlinico, Modena; Orsi C., Policlinico S.Orsola-Malpighi, Bologna; Cannarile DC., Policlinico S.Orsola-Malpighi, Bologna; Fantinati C., Ospedale S.Maria della Scaletta, Imola; Russo G., Ospedale S.Anna, Ferrara; Monti M., Ospedale S.Maria delle Croci, Ravenna; Gambaretto C., Ospedale Morgagni Pierantoni, Forlì; Ferri B., Ospedale Bufalini, Cesena; Flachi M., Ospedale degli Infermi, Rimini

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Correspondence to Dino Gibertoni.

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On behalf of all authors, the corresponding author states that there is no conflict of interest. The authors declare that no support was received for the current study.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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On behalf of PIRP Nephrologists’ group

Authors in the mentioned group are present in acknowledgments.

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Gibertoni, D., Mandreoli, M., Rucci, P. et al. Excess mortality attributable to chronic kidney disease. Results from the PIRP project. J Nephrol 29, 663–671 (2016). https://doi.org/10.1007/s40620-015-0239-4

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  • DOI: https://doi.org/10.1007/s40620-015-0239-4

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