Fig. 2

The frequency of adequate and inadequate compression positioning. A The figures are in the standing position, hand in contact with the CPR-Assist™, and definition of inadequate position. The front label indicates the base side of the hand in contact with the CPR-Assist™, whereas the back label indicates the tip side of the finger; the thenar and hypothenar label indicate the thenar and hypothenar side of the hand, respectively. B The inset table shows the primary outcomes, namely the frequency of adequate compression positioning where the maximal average pressure was applied to the sensor for each participant, the location where the inadequate position occurred in, and the frequency of each inadequate position