Statistics
fractures
As a primary outcome, it was investigated whether a statistically significant difference could be found between the VIT patients and the control group regarding the contribution margin calculated as the difference between total revenues achieved and all incurred costs in every case. This difference was compared in regard of difference in number of surgeries, total OR time and care provided by medical staff in minutes. In addition, it was examined how many ankle fractures were treated at the institution in 2018 in order to extrapolate the result to the actual annual number of cases and thus more accurately assess the economic impact. The collected data are presented using appropriate descriptive statistics (mean ± standard deviation, median with Q1 and Q3). Data were analysed, according to the intention-to-treat principle (ITT) firstly and secondly, as a sensitivity analysis, using the as-treated principle (AT), according to the therapy actually performed. Two-sided Statistical analyses were performed and graphics desined using the Prism program from GraphPad Software, version 8.3.1 and statistical significance was set at 