Brief Pain Inventory (BPI) - 7 items of pain interference
Time frame: Baseline and after eight weeks
The BPI is a self-report questionnaire used to assess the impact of pain on daily functioning. Its seven pain interference items measure how pain affects activities such as general activity, mood, walking ability, normal work, relations with others, sleep, and enjoyment of life.
The Hospital Anxiety and Depression Scale (HADS)
Time frame: Baseline and after eight weeks
The HADS is a 14-item self-report questionnaire designed to assess symptoms of anxiety and depression in non-psychiatric hospital patients. It consists of two subscales-seven items each for anxiety (HADS-A) and depression (HADS-D).
Pain Self-Efficacy Questionnaire (PSEQ)
Time frame: Baseline and after eight weeks
The PSEQ is a 10-item self-report tool designed to assess the confidence of individuals with chronic pain in performing daily activities despite their pain.
Pain Catastrophizing Scale (PCS)
Time frame: Baseline and after eight weeks
The PCS is a 13-item questionnaire that measures negative thought patterns related to pain. It assesses three components: rumination, magnification, and helplessness. Higher scores indicate greater levels of pain catastrophizing.
Fear-Avoidance Beliefs Questionnaire (FABQ)
Time frame: Baseline and after eight weeks
The Fear-Avoidance Beliefs Questionnaire (FABQ) is a self-report tool that assesses the extent to which fear and avoidance beliefs about physical activity and work contribute to a person's chronic pain. It consists of 11 items divided into two subscales: physical activity and work.
The Satisfaction with Life Scale (SWLS)
Time frame: Baseline and after eight weeks
The SWLS is a 5-item self-report questionnaire that measures overall life satisfaction.
Toronto Alexithymia Scale (TAS)
Time frame: Baseline and after eight weeks
The TAS is a 20-item self-report questionnaire that can be used to identify issues relating to alexithymia, such as difficulty identifying and describing feelings and externally oriented thinking
The Pittsburgh Sleep Quality Index (PSQI)
Time frame: Baseline and after eight weeks
The PSQI is a 19-item self-report questionnaire that assesses sleep quality and disturbances over a 1-month period. It yields a global score based on seven components, including sleep duration, latency, and disturbances.
The Fatigue Severity Scale (FSS)
Time frame: Baseline and after eight weeks
The FSS is a 9-item self-report questionnaire that measures the impact of fatigue on daily functioning.
The Patient Global Impression of Change (PGIC)
Time frame: After eight weeks
The PGIC is a single-item self-report measure that assesses a patient's overall perception of improvement or decline following treatment.
Medical cannabis consumption
Time frame: Baseline and after eight weeks
Three questions regarding the frequency of cannabis use and the method of cannabis consumption.
Health care use
Time frame: Baseline and after eight weeks
Four questions regarding the medications the patient takes regularly, the treatments they receive and their frequency, and doctor visits within the past three months.