Prognosis for patients with chronic low back pain: inception cohort study. Export

@article{citeulike:5923449, abstract = {OBJECTIVES: To describe the course of chronic low back pain in an inception cohort and to identify prognostic markers at the onset of chronicity. DESIGN: Inception cohort study with one year follow-up. SETTING: Primary care clinics in Sydney, Australia. PARTICIPANTS: The study sample was a subcohort of an inception cohort of 973 consecutive patients presenting to primary care with acute low back pain (<2 weeks' duration). 406 participants whose pain persisted for three months formed the inception cohort of patients with chronic low back pain. MAIN OUTCOME MEASURES: Outcomes and putative predictors measured at initial presentation, onset of chronicity (study entry), and follow-up at nine and 12 months. Recovery was determined from measures of pain intensity, disability, and work status. The association between potential prognostic factors and time to recovery was modelled with Cox regression. RESULTS: Completeness of follow-up was 97\% of total person time for all outcomes. The cumulative probability of being pain-free was 35\% at nine months and 42\% at 12 months and for complete recovery was 35\% at nine months and 41\% at 12 months. Of the 259 participants who had not recovered from pain related disability at entry to the chronic study, 47\% had recovered by 12 months. Previous sick leave due to low back pain, high disability levels or high pain intensity at onset of chronicity, low levels of education, greater perceived risk of persistent pain, and being born outside Australia were associated with delayed recovery. CONCLUSION: More than one third of patients with recent onset, non-radicular chronic low back pain recover within 12 months. The prognosis is less favourable for those who have taken previous sick leave for low back pain, have high disability levels or high pain intensity at onset of chronic low back pain, have lower education, perceive themselves as having a high risk of persistent pain, and were born outside Australia.}, author = {Costa, Luciola da Menezes d. a. . C. and Maher, Christopher G. and McAuley, James H. and Hancock, Mark J. and Herbert, Robert D. and Refshauge, Kathryn M. and Henschke, Nicholas}, citeulike-article-id = {5923449}, citeulike-linkout-0 = {http://view.ncbi.nlm.nih.gov/pubmed/19808766}, citeulike-linkout-1 = {http://www.hubmed.org/display.cgi?uids=19808766}, issn = {1468-5833}, journal = {BMJ (Clinical research ed.)}, keywords = {back, chronic, outcome, pain, prognosis}, posted-at = {2009-10-12 03:52:05}, priority = {2}, title = {Prognosis for patients with chronic low back pain: inception cohort study.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/19808766}, volume = {339}, year = {2009} }

TY - JOUR ID - citeulike:5923449 L3 - citeulike-article-id:5923449 N2 - OBJECTIVES: To describe the course of chronic low back pain in an inception cohort and to identify prognostic markers at the onset of chronicity. DESIGN: Inception cohort study with one year follow-up. SETTING: Primary care clinics in Sydney, Australia. PARTICIPANTS: The study sample was a subcohort of an inception cohort of 973 consecutive patients presenting to primary care with acute low back pain (<2 weeks' duration). 406 participants whose pain persisted for three months formed the inception cohort of patients with chronic low back pain. MAIN OUTCOME MEASURES: Outcomes and putative predictors measured at initial presentation, onset of chronicity (study entry), and follow-up at nine and 12 months. Recovery was determined from measures of pain intensity, disability, and work status. The association between potential prognostic factors and time to recovery was modelled with Cox regression. RESULTS: Completeness of follow-up was 97% of total person time for all outcomes. The cumulative probability of being pain-free was 35% at nine months and 42% at 12 months and for complete recovery was 35% at nine months and 41% at 12 months. Of the 259 participants who had not recovered from pain related disability at entry to the chronic study, 47% had recovered by 12 months. Previous sick leave due to low back pain, high disability levels or high pain intensity at onset of chronicity, low levels of education, greater perceived risk of persistent pain, and being born outside Australia were associated with delayed recovery. CONCLUSION: More than one third of patients with recent onset, non-radicular chronic low back pain recover within 12 months. The prognosis is less favourable for those who have taken previous sick leave for low back pain, have high disability levels or high pain intensity at onset of chronic low back pain, have lower education, perceive themselves as having a high risk of persistent pain, and were born outside Australia. JF - BMJ (Clinical research ed.) SN - 1468-5833 TI - Prognosis for patients with chronic low back pain: inception cohort study. VL - 339 KW - back KW - chronic KW - outcome KW - pain KW - prognosis AU - Costa, Luciola da Menezes AU - Maher, Christopher AU - McAuley, James AU - Hancock, Mark AU - Herbert, Robert AU - Refshauge, Kathryn AU - Henschke, Nicholas PY - 2009/// UR - http://view.ncbi.nlm.nih.gov/pubmed/19808766 ER -