Outcomes in end-stage renal disease dialysis patients with depression

Depression is the most common psychiatric disorder among patients with end-stage renal disease (ESRD), yet the risk factors for mortality in this population remain unclear.

To identify risk factors for mortality in ESRD patients with depression and assess the incidence of suicide attempts.

We used Taiwan's National Health Insurance Research Database to identify adult patients who initiated maintenance dialysis between 1997 and 2012. Two ESRD cohorts were established at a depression-to-non-depression ratio of 1:8, matched by age and gender (n = 3289 with depression; n = 26 312 without depression). Outcomes included all-cause mortality and suicide attempts, with additional subgroup analyses by baseline depression severity.

ESRD patients with depression had a higher mortality risk (hazard ratio 1.15, 95% CI: 1.10-1.21) than those without. Risk factors for mortality included male gender, older age, diabetes and cardiovascular disease. Patients with depression also had a higher risk of suicide attempts (hazard ratio 3.02, 95% CI: 1.68-5.42). ESRD patients with severe depression had a significantly higher rate of hospital admissions for depression compared to those with non-severe depression (incidence rate ratio (IRR): 1.82, 95% CI: 1.14-2.93). Furthermore, patients with severe depression were associated with a significantly higher mortality rate compared to those without depression (IRR: 1.42, 95% CI: 1.15-1.76).

Depression is linked to poor survival in ESRD patients, with underlying comorbidities playing a key role in mortality. Given the increased risk of mortality, suicide attempts and hospital admissions, these high-risk patients require enhanced medical attention, particularly those with severe depression.