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.
Mean
SD
Average pain intensity in the past 7 days
6.71
2.0
Worst pain intensity in the past 7 days
8.16
1.8
Physical Health-Related QOL (SF-12v2)
29.07
8.9
Mental Health-Related QOL (SF-12v2)
40.48
11.7
%
Evidence of neuropathic pain
(i) No
1336
23.9
(ii) Yes
1732
31.0
Mixed evidence
2511
45.0
Pain duration
(i) <1 year
702
13.1
(ii) 1 year to <3 years
1201
22.4
(iii) 3 years to <5 years
964
18.0
(iv) 5 years to <10 years
1098
20.4
(v) ≥10 years
1405
26.2
Time elapsed between referral and 1st visit
(i) <0.5 year
3603
65.0
(ii) 0.5 year to <2 years
1620
29.2
(iii) 2 years to <4 years
297
5.4
(iv) ≥4 years
23
0.4
Pain interference over the past 7 days (BPI score ≥ 7/10)
(i) General activity
3684
59.1
(ii) Mood
2931
47.0
(iii) Walking ability
2789
44.7
(iv) Normal work
4016
64.4
(v) Relations with other people
2225
35.7
(vi) Sleep
3410
54.7
(vii) Enjoyment of life
2337
37.5
(viii) Self-care
1653
26.5
(ix) Recreational activities
4069
65.2
(x) Social activities
3275
52.5
Depressive symptoms (BDI-I)
(i) None or minimal (0–9)
1335
21.4
(ii) Mild (10–18)
2167
34.8
(iii) Moderate (19–29)
1786
28.7
(iv) Severe (30–63)
946
15.2
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.
