Fig. 3. The distribution of standard compliant (ZW), partially compliant (CW) and incorrect (N) answers.
In the next step, the sounds were grouped according to their class and the percentage of correct responses (P), depending on the medical specialization (Fig. 4). To give a general view, it was assumed that the correct answer category (P) contains both the standard compliant responses (ZW) and the partially compliant responses (CW).