Profile of Chronic Musculoskeletal Pain Patients Related to Treatment Adherence and Virtual Reality

To assess pain intensity using the verbal numeric pain scale. Scores range from 0 (no pain) to 10 (worst pain imaginable). Higher scores indicate greater intensity.

To assess pain intensity and chronic pain interference using the graded chronic pain scale. Scores range from 0 (no pain/no interference) to 10 (worst pain imaginable/unable to carry on any activities). Higher scores indicate greater intensity or interference.

To assess pain severity using the brief pain inventory. Scores range from 0 (no pain/does not interfere) to 10 (worst pain imaginable/completely interferes). Higher scores indicate greater severity.

To assess awareness, consciousness, vigilance and observation of pain using the pain vigilance and awareness questionnaire. Scores range from 0 (never) to 5 (always). The total questionnaire scores range between 0 and 80. Higher scores indicate greater awareness, consciousness, vigilance and observation of pain.

To assess chronic pain acceptance using the chronic pain acceptance questionnaire. Scores range from 0 (never true) to 6 (it is always true). Higher scores indicate greater acceptance.

To assess neurophysiology of pain using the neurophysiology of pain questionnaire. Scores range from 0 to 13 (sum of all correct items).

To assess kinesiophobia using the TAMPA scale of kinesiophobia. Scores range from 1 (totally disagree) to 4 (totally agree). The final score can range between 11 and 44 points, with higher scores indicating greater perceived kinesiophobia.

To assess catastrophizing of pain using the pain catastrophizing scale. Scores range from 0 (nothing at all) to 4 (all the time). The final score range between 0 and 52 points, with higher scores indicating greater levels of catastrophism.

To assess functionality using the functional independence measure. Scores range from 1 (total assistance) to 7 (complete independence). The final score range between 18 and 126 points, with higher scores indicating greater independence.

To assess disability using the world health organisation disability assessment. . Scores range from 1 (none) to 5 (extreme). The final score range between 12 and 60 points, with higher scores indicating worst disability.

To assess level of movement related to space using the life space questionnaire. Scoring is based on "yes" (1 point) or "no" (2 points) answers. The more answers that do "no" exist in the questionnaire, the lower their level of movement in the space will be.

To assess health-related quality of life using the euroqol-5d. Total score range from 1 (best health status) to 0 (death). The second part of the euroqol-5d is visual analogue scale that goes from 0 (worst state of health imaginable) to 100 (best state of health imaginable).

To assess sleep quality using the Pittsburgh sleep quality index. The overall score ranges from 0 to 21 points. "0" indicates ease of sleeping and "21" severe difficulty in all areas.

To assess depression and anxiety using the hospital anxiety and depression scale. The total score ranges from 0 to 21 on each subscale, where a higher score is indicative of more severe symptoms.

To assess physical activity using the international physical activity questionnaire. This measure assesses the types of intensity of physical activity and sitting time that people do as part of their daily lives are considered to estimate total physical activity in Metabolic Equivalent (MET)-min/week and time spent sitting.

To assess work performance using the work role functioning questionnaire. Total score range from 0% (difficulty all the time) to 100 % (no difficulty at any time).

To assess social support using the medical outcomes study social support survey

To assess information about treatment and barriers associated to treatment adherence using Likert-type questions range from 1 (totally disagree) to 5 (totally agree).

To assess barriers associated to doing exercise therapy using the exercise therapy burden questionnaire. Scores range from 0 (totally disagree) to 10 (totally agree).

To assess patients' perception to virtual reality rehabilitation using Likert-type questions and yes or no questions