Consistency of adherence across regimen demands.

The extent to which adherence to one demand of the diabetic treatment regimen is related to adherence to other regimen demands was explored in a sample of 227 diabetic patients. Adherence to weight control, urine/blood testing, medication taking, symptom reporting, and safety demands was assessed using a variety of methods: (a) patients' report in relation to physician's criteria, (b) patients' report in relation to their own understanding of those criteria, (c) significant others' reports, (d) nurses' ratings, and (e) physicians' ratings. Based on attribution theory, it was proposed that informed others would view patients as more consistent than patients themselves did. Separate intercorrelation matrices were created for each method. The correlations, however, were uniformly low (most rs less than .25) and mean correlations did not differ significantly between matrices. The relative independence of adherence to different demands of the diabetic regimen has important implications for the conceptualization and measurement of treatment adherence.