Abstract
BackgroundPatient self-management is crucial to prevent complications and mortality in type 2 diabetes. From an economic perspective, time preference predicts short-sighted decision making and thus might help to explain non-adherence to self-anagement recommendations. However, recent studies on this association have shown mixed results.PurposeIn this study, we tested whether the combination of time preference and outcome expectancy can improve the predictions of self-management behavior.Patients and methodsData from 665 patients with type 2 diabetes were obtained from the cross-sectional KORA (Cooperative Health Research in the Region of Augsburg) GEFU 4 study. Time preference and outcome expectancy were measured by one question each, which were answered on a 4-point Likert scale. Their association with six self-managing behaviors was tested in logistic and linear regression analyses. Likewise, we examined the association between self-management and the interaction of outcome expectancy and time preference.ResultsA high time preference was associated with a significantly lower sum of self-management behaviors (β=−0.29, 95% CI [−0.54, −0.04]). Higher outcome expectancy was associated with a higher self-management score (β=0.21, 95% CI [−0.03, 0.45]). The interaction model showed that low time preference was only associated with better self-management when combined with a high outcome expectancy (β=0.05, 95% CI [−0.28, 0.39] vs β=0.27, 95% CI [−0.09, 0.63]).ConclusionTime preference and outcome expectancy are interrelated predictors of patient self-management and could be used to identify and to intervene on patients with a potentially poor self-management.
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