Debra K. Moser

Correlates of Quality of Life in Rural Patients With Heart Failure

Background—There is abundant research indicating poor physical, psychological, and social functioning of patients with chronic heart failure (HF), a reality that can lead to poor health-related quality of life (QoL). Little is known about the experience of rural patients with HF. Methods and Results—This study was part of a randomized clinical trial titled Rural Education to Improve Outcomes in Heart Failure (REMOTE-HF) designed to test an education and counseling intervention to improve self-care in patients with HF. We evaluated 612 rural patients. Multiple validated questionnaires were administered to assess patient perceptions of health and health literacy. Baseline factors were collected and compared with baseline QoL measures only. Patients’ health-related QoL was assessed using the Minnesota Living with Heart Failure scale. The data were analyzed using a general linear model to test the association of various patient characteristics with QoL in rural patients with HF. Patients were 65.8 (+12.9) years of age. The majority were men (58.7%), married (56.4%), and had completed a high-school education (80.9%). Factors associated with reduced QoL among this population include geographic location, younger age, male sex, higher New York Heart Association class, worse HF knowledge, poorer perceived control, and symptoms of depression or anxiety. The data provided no evidence of an association between left ventricular ejection fraction and QoL. Conclusions—This study of rural patients with HF confirms previously identified factors associated with perceptions of QoL. However, further study is warranted with an urban control group. Clinical Trial Registration—URL: http://www.clinicaltrials.gov. Unique identifier: NCT00415545.

Health Literacy Mediates the Relationship Between Age and Health Outcomes in Patients With Heart Failure

Background—Previous studies have linked frequent rehospitalizations for heart failure (HF) and increased mortality with older age, higher severity of HF, lack of an evidence-based medication regimen, and inadequate health literacy. However, the pathway between age and health outcomes in patients with HF remains unknown. Therefore, the purpose of this study was to test whether the association between age and health outcomes can be explained by severity of HF, evidence-based medication use, and health literacy in patients with HF. Methods and Results—This was a longitudinal study of 575 rural patients with HF recruited from outpatient clinics and hospitals. Demographics, clinical data, and health literacy were collected at baseline. HF readmissions and cardiac mortality were followed for 2 years; 57% of patients were ≥65 years of age. Older patients with HF were more likely to have low health literacy and less likely to be prescribed angiotensin-converting enzyme inhibitors or &bgr;-blockers. Using Kaplan–Meier survival curves with log-rank tests, health outcomes were significantly worse in patients who were ≥65 years and in those with low health literacy. Separate Cox regressions revealed that age and health literacy predicted worse health outcomes (P=0.006 and <0.001, respectively). When health literacy was entered into the model, the hazard ratio for age changed from 1.49 to 1.29 (a 41% reduction); age was no longer a significant predictor of health outcomes, but health literacy remained significant (P<0.001), demonstrating mediation. Conclusions—Health literacy mediates the relationship between age and health outcomes in adults with HF. Clinical Trial Registration—URL: http://www.clinicaltrials.gov. Unique identifier: NCT00415545.