Pain intensity, duration, and frequency
neck pain, Pain, pain
Pain intensity at the moment was assessed using a 10-cm Visual Analogue Scale (VAS), anchored “no pain at all” and “worst pain imaginable” [NP duration and frequency were determined with closed questions (pain duration: “For how long have you had pain in the neck region?”; response options: i) between 3 and 6 months; ii) between 6 months to 1 year; iii) between 1 and 2 years; iv) between 2 and 4 years; and v) more than five years; Pain frequency: “How many times, in the past week, did you feel neck pain?”; response options: (i) never; (ii) rarely (once per week); (iii) occasionally (2 to 3 times per week); (iv) many times (more than 3 times per week); (v) always).