Fig. 3

ICER Tornado diagram and detailed results of the one-way sensitivity analysis. The tornado diagram shows results of the one-way sensitivity analysis for the incremental cost-effectiveness ratio (ICER) when the input variable is modified. The vertical line represents the value of the base-case ICER result (22′595CHF/avoided hospitalisation). The grey and blue horizontal bars represent the size of the base-case ICER's change. The grey bars show the change in base-case ICER when there is a 20% increase to the original value or upper limit of the range. The blue bars show the change in the base-case ICER when there is a 20% decrease from the original value or lower limit of the range. E.g., if the salary rate was in its upper limit of the range, the base-case ICER would increase to 31′300CHF/avoided hospitalisation. Negative ICER values in our diagram represent the fourth quadrant of cost-effectiveness plane (INTERCARE is dominated) – i.e., incremental costs have positive value and incremental effects negative value