Pain Research and Management / 2017 / Article / Tab 3

Research Article

Development and Implementation of a Registry of Patients Attending Multidisciplinary Pain Treatment Clinics: The Quebec Pain Registry

Table 3

Pain-related characteristics of patients enrolled in the Quebec Pain Registry up to December 31, 2013.


Average pain intensity in the past 7 days6.712.0
Worst pain intensity in the past 7 days8.161.8
Physical Health-Related QOL (SF-12v2)29.078.9
Mental Health-Related QOL (SF-12v2)40.4811.7


Evidence of neuropathic pain
 (i) No133623.9
 (ii) Yes173231.0
Mixed evidence251145.0
Pain duration
 (i) <1 year70213.1
 (ii) 1 year to <3 years120122.4
 (iii) 3 years to <5 years96418.0
 (iv) 5 years to <10 years109820.4
 (v) ≥10 years140526.2
Time elapsed between referral and 1st visit
 (i) <0.5 year360365.0
 (ii) 0.5 year to <2 years162029.2
 (iii) 2 years to <4 years2975.4
 (iv) ≥4 years230.4
Pain interference over the past 7 days (BPI score ≥ 7/10)
 (i) General activity368459.1
 (ii) Mood293147.0
 (iii) Walking ability278944.7
 (iv) Normal work401664.4
 (v) Relations with other people222535.7
 (vi) Sleep341054.7
 (vii) Enjoyment of life233737.5
 (viii) Self-care165326.5
 (ix) Recreational activities406965.2
 (x) Social activities327552.5
Depressive symptoms (BDI-I)
 (i) None or minimal (0–9)133521.4
 (ii) Mild (10–18)216734.8
 (iii) Moderate (19–29)178628.7
 (iv) Severe (30–63)94615.2

Norm-based scores [44].
Patients were classified as having nonneuropathic pain if they received a nonneuropathic pain diagnosis from the pain physician and had a score ≤ 3 on the DN4 Questionnaire. A diagnosis of neuropathic pain was defined as a combination of a neuropathic pain diagnosis made by the pain clinician and a score ≥ 4 on the DN4. Patients who had either a neuropathic pain diagnosis from the pain physician or a score ≥ 4 on the DN4 were classified as having mixed evidence of neuropathic pain.

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