Hemodialysis patients often do not attend their scheduled treatment session. We investigated factors associated with missed appointments and whether such nonadherence poses significant harm to patients and increases overall health care utilization in an observational analysis of 44 million hemodialysis treatments for 182,536 patients with ESRD in the United States. We assessed the risk of hospitalization, emergency room visit, or intensive-coronary care unit (ICU-CCU) admission in the 2 days after a missed treatment relative to the risk for patients who received hemodialysis. Over the 5-year study period, the average missed treatment rate was 7.1 days per patient-year. In covariate adjusted logistic regression, the risk of hospitalization (odds ratio [OR], 3.98; 95% confidence interval [95% CI], 3.93 to 4.04), emergency room visit (OR, 2.00; 95% CI, 1.87 to 2.14), or ICU-CCU admission (OR, 3.89; 95% CI, 3.81 to 3.96) increased significantly after a missed treatment. Overall, 0.9 missed treatment days per year associated with suboptimal transportation to dialysis, inclement weather, holidays, psychiatric illness, pain, and gastrointestinal upset. These barriers also associated with excess hospitalization (5.6 more events per patient-year), emergency room visits (1.1 more visits), and ICU-CCU admissions (0.8 more admissions). In conclusion, poor adherence to hemodialysis treatments may be a substantial roadblock to achieving better patient outcomes. Addressing systemic and patient barriers that impede access to hemodialysis care may decrease missed appointments and reduce patient morbidity. Timely and unhindered access to preventative services and ambulatory care is an important component of sustaining healthy populations. Without access to these services, patients will experience more hospitalizations and deaths from preventable medical conditions. 1,2 Patients with ESRD who are on chronic hemodialysis typically require three outpatient treatments per week to prevent serious complications from their kidney failure. 2 Yet many patients with ESRD miss their hemodialysis treatment and place themselves at increased risk for hospitalization or mortality. 2 Why patients miss dialysis remains incompletely understood. Several small studies have associated depression, unreliable transportation, demographic factors, and lack of motivation with a missed dialysis treatment; however, a large comprehensive analysis of adherence barriers to dialysis care and their implication on patient outcomes currently remains elusive. [2][3][4] In this study, we identified missed hemodialysis appointments from a large ESRD cohort to quantify their effect on subsequent hospitalizations, emergency room(ER) visits,and intensive-coronarycareunit(ICU-CCU) admissions. We used these results to test which systemic and patient barriers potentially impede patients from getting to their dialysis facility for treatment.
RESULTS
Treatments Characteristics in the Study PopulationA total of 44,586,241 outpatient hemodialysis treatments from 182,53...