Background
Home hemodialysis (HHD) is associated with improved clinical and quality of life outcomes compared with in-center hemodialysis but remains an underused modality in the United States. Discontinuation from HHD may be an important contributor to the low utilization of this modality. This study aimed to describe the rate and timing of HHD discontinuation, or technique failure, and identify contributing factors.
Study Design
Retrospective cohort study
Setting & Participants
Using data from a large dialysis provider, we identified a nationally representative cohort of patients who initiated HHD from 2007 – 2009 (N=2840).
Factors
Demographics, ESRD duration, kidney transplant listing status, co-morbid conditions, level of urbanization or rurality based on residence zip code, socioeconomic status based on residence zip code, and dialysis facility factors.
Outcomes
Discontinuation from HHD, defined as ≥60 days with no HHD treatments.
Measurements
Competing risk models were used to produce cumulative incidence plots and to identify socio-demographic and clinical variables associated with HHD discontinuation. Transplantation and death were treated as competing risks for HHD discontinuation.
Results
The 1-year incidence of discontinuation was 24.9% and the 1-year mortality estimate was 7.6%. Median ESRD duration prior to initiating HHD was 2.1 years. Diabetes and smoking/alcohol/drug use were associated with increased risk of HHD discontinuation (HRs of 1.34 [95% CI, 1.07–1.68] and 1.34 [95% CI, 1.01–1.78], respectively). Listing for kidney transplant and rural residence (rural-urban commuting area ≥ 7) were associated with decreased risk of HHD discontinuation (HRs of 0.73 [95% CI, 0.61–0.87] and 0.78 [95% CI, 0.59–1.02], respectively).
Limitations
Limited to variables available within the DaVita dialysis and US Renal Data System datasets.
Conclusions
A substantial proportion of patients discontinue HHD within the first 12 months of use of the modality. Patients with diabetes, substance use, non-listing for kidney transplant, and urban residence are at greater risk for discontinuation. Targeting high-risk patients for increased support from clinical teams is a potential strategy for reducing HHD discontinuation and increasing technique survival.