(ii) PQ: anger (numerical rating scale, 0 = not at all, 10 = extremely)
X
X
(iii) PQ: tendency to catastrophize in the face of pain (Pain Catastrophizing Scale) [71, 72]
X
X
(iv) PQ: health-related quality of life (SF-12v2) [42, 43]
X
X
Pain treatments at the pain clinic or elsewhere
(i) NQ: current pharmacological pain treatment (prescribed and not prescribed): medication name and posology
X
X
(ii) NQ: side effects of current pharmacological pain treatment: type and severity (categorical rating scale, 0 = none, 4 = severe)
X
X
(iii) NQ: past pharmacological pain treatment (prescribed and not prescribed): medication name and reason(s) for stopping
X
X
(iv) NQ: type of current and past nonpharmacological pain treatments including interventions (e.g., injection therapy, surgery), psychological techniques (e.g., self-management program, individual psychotherapy), self-management strategies (e.g., relaxation/breathing exercises, self-support group), physical therapies (e.g., physiotherapy, electrostimulation, acupuncture), and complementary alternative therapies
X
X
(v) NQ: type of health care professionals consulted since pain onset and in the months preceding follow-up
X
X
(vi) NQ: continuation of treatment at the pain clinic (yes, no)
X
X
(vii) NQ: patient’s disposition after treatment at the pain clinic
X
Patient expectations regarding treatment at the pain clinic
(ii) PQ: patient expected global change regarding functioning level and quality of life (adapted from the Patient Global Impression of Change Scale) [28]
X
Patients’ perceived improvement and satisfaction with treatment at the pain clinic
(i) PQ: patient perception of pain relief (Pain Relief Scale, 0% = no relief, 100% = complete relief) [73]
X
(ii) PQ: patient expected global impression of change regarding functioning level and quality of life (Patient Global Impression of Change Scale) [28]
X
(iii) PQ: patient satisfaction with treatment (Satisfaction Scale) [73]
X
Medical history
(i) NQ: current and past medical history (type of disorders other than chronic pain)
X
X
(ii) NQ: type of current medication for medical condition
NQ, Nurse-administered Questionnaire; PQ, Patient self-administered Questionnaire (PQ). Follow-up data were collected 6 months after patients’ initial visit at the pain clinic. Between November 2008 and March 2012, additional follow-up data were gathered at 12 and 24 months but only in patients who had been not discharged from the pain clinic in the meantime. Item not measured after June 2012. Item measured after June 2012. Patients were informed that no members of the clinical team will have access to their satisfaction ratings regarding the treatments they received at the pain clinic.
