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Title: Trajectories of sickness absence and disability pension before and after opioid initiation for noncancer pain: a 10-year population-based study.
Austin Authors: Lalic, Samanta;Bell, J Simon;Gyllensten, Hanna;Gisev, Natasa;Friberg, Emilie;Ilomaki, Jenni;Sluggett, Janet K;Mittendorfer-Rutz, Ellenor;Alexanderson, Kristina
Affiliation: Division of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
Department of Pharmacy, Austin Health, Melbourne, Victoria, Australia
Division of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
National Drug and Alcohol Research Centre, UNSW Sydney, Sydney, New South Wales, Australia
Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Melbourne, Victoria, Australia
Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
Issue Date: May-2019
Publication information: Pain 2019; 160(5): 1224-1233
Abstract: Chronic noncancer pain is a leading cause of sickness absence (SA) and disability pension (DP). The objectives of this study were to identify trajectories of SA/DP before and after strong and weak opioid initiation for noncancer pain and the factors associated with these trajectories. A longitudinal population-based study of 201,641 people (24-59 years) without cancer who initiated opioid analgesics in 2009 in Sweden was conducted. Trajectories of net annual SA/DP days in the 5 years before/after opioid initiation were estimated with group-based trajectory modelling. Multinomial logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for factors associated with trajectory groups. Among the 6.9% of people initiating strong opioids, 12.5% had persistent high SA/DP (estimated 320 days/year) before and after opioid initiation and 72.9% had persistent low/minimum SA/DP (estimated 30 days/year). Approximately 8.6% of people had increasing SA/DP, and 6.1% had decreasing SA/DP after opioid initiation, although this seemed to reflect continuation of preinitiation patterns. Trajectories were similar at lower SA/DP days/year among those initiating weak opioids. Persistent high SA/DP among strong opioid initiators were associated with ≥5 comorbidities (OR = 8.72, 95% CI 5.61-13.56), ≤9 years of education (OR = 5.83, 95% CI 4.84-7.03), and previous use of antidepressants (OR = 4.57, 95% CI 3.89-5.37) and antipsychotics (OR = 4.49, 95% CI 2.93-6.88). Three-quarters of people initiating opioids for noncancer pain had persistent low/minimum levels of SA/DP 5 years before and after initiation. Increasing and decreasing SA/DP after opioid initiation seemed to reflect a continuation of preinitiation patterns. Our findings highlight the complex range of sociodemographic and medication-related factors associated with persistent SA/DP.
DOI: 10.1097/j.pain.0000000000001500
ORCID: 0000-0002-7055-3626
Journal: Pain
PubMed URL: 31009421
Type: Journal Article
Appears in Collections:Journal articles

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