Working 6 Months Prior to Hemodialysis is Associated with a Better Survival

by Adeline Dorcas on  June 15, 2019 at 12:18 PM Research News
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Kidney disease patients who work in the last six months before hemodialysis are more likely to have better survival, reports a new study.
Working 6 Months Prior to Hemodialysis is Associated with a Better Survival
Working 6 Months Prior to Hemodialysis is Associated with a Better Survival

Employment is a key determinant of quality of life for all people, including hemodialysis patients. Employment offers social support and improves patients' lifestyle, financial status, quality of life, and self-esteem, whilst unemployed people often face financial and social difficulties as well as physical and psychological problems. Unemployed people may spiral into a deep depression, sometimes accompanied by alcohol and drug abuse.

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"Therefore it is important that patients with chronic kidney disease (CKD) can maintain the work, especially when they reach the stage of end-stage renal disease and are in need of dialysis treatment," explains Professor Alberto Ortiz, editor-in-chief of CKJ, in which an interesting study has been published.

It analyzed the employment status of 496,989 US patients initiating maintenance hemodialysis from 2006-2015 - with alarming results: 26% (n=129,622) of patients were employed 6 months prior to dialysis initiation - but this dropped to only 15% when dialysis treatment was initiated. It is not surprising that patients who were older and had more comorbidities were less likely to maintain employment, but there was also a social dimension: Females, Hispanic, African Americans, and people living in low-income zip codes lost their jobs more often.

The study showed that being made redundant was associated with mortality: Compared to those who were employed from 6 months prior to dialysis initiation, people who became unemployed in this phase had a significantly higher death rate (p<0.0001), even after adjustment for multiple co-variables. Conversely, those who continued to work were more likely to receive a transplant (p<0.0001).

Thus, maintaining employment during the final 6 months prior to hemodialysis was associated with protection against mortality and with higher rates of transplantation. "But of course we have to be careful with the interpretation of these data, because we are faced with a chicken-or-egg question. Was the survival benefit really due to the positive effect of work on body and mind of our patients - or did it simply show that those patients with lower survival rates were unemployed, because they had already been severely ill before the initiation of the dialysis treatment?"

As the study authors explained in their paper, the limitations of the study include its retrospective design, which allowed the only examination of associations between known variables, not causal relationships. Besides, data on important clinical and socioeconomic variables, such as residual renal function, depression, and nutritional status, which are also key factors that impact patients' outcomes, were not included.

"Nevertheless, we know from the general population, that being unemployed impacts health negatively. Therefore, we should strive to offer opportunities to combine employment and dialysis to patients who are able to work, whenever it is possible. We should further strengthen peritoneal dialysis as well as home hemodialysis, which are often better dialysis modalities for patients who want to continue working. We should encourage our patients to stay employed while on dialysis and support them to balance job and treatment", concludes Professor Ortiz.

Source: Eurekalert

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