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Nefrología (Madrid)

versión impresa ISSN 0211-6995


MARINOVICH, Sergio et al. The lack of income is associated with reduced survival in chronic haemodialysis. Nefrología (Madr.) [online]. 2012, vol.32, n.1, pp.79-88. ISSN 0211-6995.

Introduction: Poor socioeconomic status in the patient population is one of the causes of the lack of primary and secondary prevention of chronic kidney disease and negatively affects the survival of patients on chronic haemodialysis (HD). Objective: To confirm whether the low or absent income of the incident population on HD is a factor of poor prognosis. Methods: We used the incident HD population of the Argentine Registry of Chronic Dialysis. Follow-up lasted 12 months, performing an intention to treat analysis. We applied the Cox model to assess the association between income and survival of patients after adjusting for age, sex, diabetes, comorbidities, initial laboratory results, and first vascular access. Results: We analysed 13466 adult patients (age at onset: 60.4 ±15.6 years; 57.2% were male, and 39.2% diabetic) who were assigned to 2 groups: 1) "no income" group, 5661 patients (age at onset: 60.3 ±15.4 years; 53.1% were male and 41.4% diabetic), 2) "with income" group, 7805 patients (age at onset, 60.5 ±15-8] years; 60.1% were male and 37.5% diabetic). The "no income" group had a hazard ratio of 1.19 (95% confidence interval [CI]: 1.11-1.28) in the univariate analysis, 1.23 (95% CI: 1.14-1.32 ) considering age and gender, 1.22 (95% CI: 1.13-1.31) by adding diabetes mellitus, 1.26 (95% CI: 1.18-1.36) by adding comorbidities, 1.25 (95% CI: 1.16- 1.35) by adding the initial laboratory results, and 1.24 (95% CI: 1.15- 1.33) if temporary vascular access is included. All models resulted in a significance of P=.000. Conclusions: Low or no income of patients at the time of entry into HD is an independent risk factor for immediate lower survival.

Palabras clave : Haemodialysis; Income level; Socioeconomic status; Survival.

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