Fig. 1

Health Belief Model, modified according to Janz et al. 1984 [12]. The figure demonstrates how the elements of the MeinPlan intervention (grey boxes) are related to the Health Belief Model (white boxes). We assumed that general beliefs about medicines influence the risk awareness concerning polypharmacy. The hypothesis was that cizitens with a rather positive attitude towards medications are less risk-conscious and therefore less likely to use a medication list