Medicine
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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty
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Item Classification of neck/shoulder pain in epidemiological research: a comparison of personal and occupational characteristics, disability and prognosis among 12,195 workers from 18 countries(Elsevier-North-Holland, 2016) Sarquis, L.M.; Coggon, D.; Ntani, G.; Walker-Bone, K.; Palmer, K.T.; Felli, V.E.; Harari, R.; Barrero, L.H.; Felknor, S.A.; Gimeno, D.; Cattrell, A.; Vargas-Prada, S.; Bonzini, M,; Solidaki, E.; Merisalu, E.; Habib, R.R.; Sadeghian, F.; Kadir, M.M.; Warnakulasuriya, S.S.; Matsudaira, K.; Nyantumbu, B.; Sim, M.R.; Harcombe, H.; Cox, K.; Marziale, M.H.; Harari, F.; Freire, R.; Harari, N.; Monroy, M.V.; Quintana, L.A.; Rojas, M.; Harris, E.C.; Serra, C.; Martinez, J.M.; Delclos, G.; Benavides, F.G.; Carugno, M.; Ferrario, M.M.; Pesatori, A.C.; Chatzi, L.; Bitsios, P.; Kogevinas, M.; Oha, K.; Tiina; Freimann; Sadeghian, A.; Peiris-John, R.J.; Sathiakumar, N.; Wickremasinghe, A.R.; Yoshimura, N.; Kelsall, H.L.; Hoe, V.C.; Urquhart, D.M.; Derrett, S.; McBride, D.; Herbison, P.; Gray, A.; Salazar Vega, E.J.To inform case-definition for neck/shoulder pain in epidemiological research, we compared levels of disability, patterns of association and prognosis for pain that was limited to the neck or shoulders (LNSP) and more generalised musculoskeletal pain that involved the neck or shoulder(s) (GPNS). Baseline data on musculoskeletal pain, disability and potential correlates were collected by questionnaire from 12,195 workers in 47 occupational groups (mostly office workers, nurses, and manual workers) in 18 countries (response rate = 70%). Continuing pain after a mean interval of 14 months was ascertained through a follow-up questionnaire in 9,150 workers from 45 occupational groups. Associations with personal and occupational factors were assessed by Poisson regression and summarised by prevalence rate ratios (PRRs). The one-month prevalence of GPNS at baseline was much greater than that of LNSP (35.1% vs. 5.6%), and it tended to be more troublesome and disabling. Unlike LNSP, the prevalence of GPNS increased with age. Moreover, it showed significantly stronger associations with somatising tendency (PRR 1.6 vs. 1.3) and poor mental health (PRR 1.3 vs. 1.1); greater variation between the occupational groups studied (prevalence ranging from 0% to 67.6%) that correlated poorly with the variation in LNSP; and was more persistent at follow-up (72.1% vs. 61.7%). Our findings highlight important epidemiological distinctions between sub-categories of neck/shoulder pain. In future epidemiological research that bases case definitions on symptoms, it would be useful to distinguish pain which is localised to the neck or shoulder from more generalised pain that happens to involve the neck/shoulder region.Item Association between pain and disability in patients with chronic mechanical low back pain(Sri Lanka Medical Association, 2015) Perera, G.L.R.S.; Wijayaratne, L.S.; Senarath, U.; Dissanayake, P.H.; Karunanayake, A.L.; Dissanayake, V.H.W.INTRODUCTION AND OBJECTIVES: Low back pain is the leading cause of years lived with disability in developed countries as well as in South Asian countries. The aim of this study is to evaluate the association between the intensity of pain and disability in patients with chronic mechanical low back pain (CMLBP) who attended the rheumatology clinic, National Hospital of Sri Lanka (NHSL). METHOD: This is a descriptive study on 675 patients with CMLBP who attended the rheumatology clinic, NHSL, from May 2012 to May 2014, recruited according to inclusion and exclusion criteria. Intensity of pain was measured using the 101-point numerical pain rating scale (NRS) and the disability was measured using the modified Oswestry Disability Index (MODI). A multiple linear regression model adjusted for age, gender, level of education, duration and frequency of pain and duration of treatment was used to assess the association between the intensity of pain and disability. RESULTS: Majority (482, 71.4%) were females. Mean age was 49.19 ± 11.75 years. Mean score for NRS was 46.79 ± 20.38 and for MODI was 31.77 ± 14.16, while 84.3% had daily pain. Intensity of pain was positively associated with the disability (p<0.01) and the standardized regression coefficient was +0.627 after adjusting for confounders. Frequency of pain, female gender and aging were positively associated with disability (p<0.05) while level of education, and durations of pain and treatment did not reach significant level. Conclusion: Intensity of pain explains 63% of the disability associated with CMLBP. Frequency of pain, female gender and age were also associated with disability.