Let's create the P4 questionnaire to measure the pain intensity. The P4 consists of 4 items that address pain intensity in the morning, afternoon, evening, and with activity over the past 2 days. Each item is scored on an 11-point numeric scale.
We will use a linear scale question that starts from 0 and ends on 10. The end points of the linear scales can be named to provide a reference for the users. 0 = No pain, 10 = Worst imaginable pain
