Fig. 1

The first page of the on-line questionnaire that we administered to the sample of clinicians to collect their perception on severity categories (original text in Italian). The translation of the question asked is as follows: “Think of having to represent the severity of a condition of clinical interest on an analogue-visual scale. Below, by appropriately moving the two cursors of each scale, we ask you to indicate the range to which each ordinal category of the following could associate”