2.5. Self-Reported Pain
Pain, pain
CHRONIC PAIN
Subjects were asked to rate their typical pain in the last 24 h on a scale from 0 to 10, where 0 equals “no pain” and 10 is the “worst pain they could imagine”, using the 11-Point Numeric Pain Rating Scale (NPRS-11). NPRS-11 is a validated instrument used to assess pain, and it is considered to show the most sensitivity and stability with regard to chronic pain compared to similar questionnaires [