Comparison of Older and Younger Patients Referred to a Non-interventional Community Pain Clinic in the Greater Toronto Area (GTA)

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Abstract
Aim To compare demographic and pain characteristics of older (≥ 65) vs younger (< 65) chronic non-cancer pain patients referred to a community pain clinic in the Greater Toronto Area (GTA), Ontario, Canada. Methods This is a retrospective study of 644 consecutive new patients with pain seen during 2016–2017 (older group n = 126; younger group n = 518). Demographic characteristics, Brief Pain Inventory pain ratings, and diagnosis were obtained using retrospective chart review. Patients were classified into group I (pure biomedical pathology), group II (mixed biomedical causes and psychological factors) and group III (no detectable physical pathology but psychological factors were considered important). Results Older patients comprised 19.6% of the overall population (higher than the average GTA older population). Regarding older vs younger group, male/female ratio was 1:1.3 vs 1:1.7 respectively, while 71% of the older patients were foreign born vs 37% of the younger group (p < 0.001). Low back was the most prevalent pain site for both groups; 70% of the older patients were classified as group I vs 35% of the younger patients (p < 0.0001), and only 6% as group III (vs 18% of the younger population, p < 0.05). Conclusion The study points to considerable differences between younger and older patients with pain with the latter presenting with significant biomedical pathology but lesser psychopathology. The results are comparable to those obtained from a university pain clinic as well as a rural Northern Ontario clinic. Implications of the study for planning of pain care are discussed.

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