Table 4.
Comparative data from four pain cohorts
| PWC Vaughan (644) |
CPP Toronto (1242) |
CHANGEpain Br. Columbia (933) |
Quebec Registry (6337) |
|
|---|---|---|---|---|
| Data collection period | 2016–2017 | 2001–2004 | 2016–2017 | 2008–2013 |
| F/M ratio | 1.6/1 | 1.3/1 | 2.3/1 | 1.5/1 |
| Mean age | 50.4 | 48.5 | 49.5 | 52.8 |
| Age > 65 | 20% | 15% | – | – |
| Education (college + university) | 60% | 46% | 82% | 54% |
| Employment (FT, PT, self-employed) | 43% | 20% | 44% | 28% |
| Married | 59% | 58% | 56% | 57% |
| MVA | 28% | – | 35.7% | – |
| Biomedical conditions | ||||
| Nociceptive including MSK | 62% | 41% | – | – |
| Neuropathic | 5% | 30% | – | 31% |
| Mixed | 34% | 13% | – | 45% |
| Diagnostic group categories | ||||
| Group I | 41% | 26% | – | – |
| Group II | 43% | 51% | – | – |
| Group III | 16% | 21% | – | – |
| CWP | ||||
| Overall prevalence | 11% | 9% | – | 6.6% |
| Group II prevalence F/M | 17/4% | – | – | – |
| Group III prevalence F/M | 41/30% | 51/27% | – | – |
| Pain duration (years) | 7 ± 10 | 8 years | > 5 years 50.7% | > 5 years 46.6% |
| BPI pain interference score | 49 ± 15 | – | 44 ± 14 | – |
| Severe pain intensity score | 59% | – | 34% | – |
| > 1 pain site | 74% | – | 51% | – |
| Opioid users | 35% | 63% | 34% | – |