The effects of patient characteristics and beliefs on responses to behavioral interventions for control of chronic diseases

Abstract

Tests of behavioral interventions seldom examine changes in health beliefs and behaviors thought to be prerequisites of improved outcome health states and they do not attempt to specify how patient characteristics or pretest measures influence responses to the intervention. In this study an experimental nursing intervention, its impact on hypertensive patients' beliefs about their disease, efficacy of medications and diet, as well as blood pressure and weight are described. Among patients from the experimental group, the ability of selected pretest variables to predict clinical outcomes and changes in clinical health states was evaluated. The intervention was successful in lowering diastolic blood pressure and altering certain beliefs held by the patients. The pretest characteristics were not successful in explaining hypertensive patients' responses to the intervention. Explanations for this are pursued through remarks from the content analysis of the intervention protocol. From these observations, the original health belief model was revised. The discussion concludes with a set of research questions that may prove promising for future research.