ORCID Profile
0000-0001-9268-3694
Current Organisations
University of British Columbia
,
University of California, San Diego
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Publisher: Springer Science and Business Media LLC
Date: 19-06-2018
Publisher: Scandinavian Journal of Work, Environment and Health
Date: 31-10-2013
DOI: 10.5271/SJWEH.3397
Abstract: This study aims to examine the extent to which a greater prevalence of pre-existing chronic conditions among older workers explains why older age is associated with longer duration of sickness absence (SA) following a musculoskeletal work-related injury in British Columbia. A secondary analysis of workers' compensation claims in British Columbia over three time periods (1997-1998 2001-2002, and 2005-2006), the study comprised 102 997 and 53 882 claims among men and women, respectively. Path models examined the relationships between age and days of absence and the relative contribution of eight different pre-existing chronic conditions (osteoarthritis, rheumatoid arthritis, hypertension, coronary heart disease, diabetes, thyroid conditions, hearing problems, and depression) to this relationship. Models were adjusted for in idual, injury, occupational, and industrial covariates. The relationship between age and length of SA was stronger for men than women. A statistically significant indirect effect was present between older age, diabetes, and longer days of SA among both men and women. Indirect effects between age and days of SA were also present through osteoarthritis, among men but not women, and coronary heart disease, among women but not men. Depression was associated with longer duration of SA but was most prevalent among middle-aged claimants. Approximately 70-78% of the effect of age on days of SA remained unexplained after accounting for pre-existing conditions. Pre-existing chronic conditions, specifically diabetes, osteoarthritis and coronary heart disease, represent important factors that explain why older age is associated with more days of SA following a musculoskeletal injury. Given the increasing prevalence of chronic conditions among labor market participants (and subsequently injured workers) moderate reductions in age differences in SA could be gained by better understanding the mechanisms linking these conditions to longer durations of SA.
Publisher: BMJ
Date: 26-09-2012
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 05-03-2020
DOI: 10.1097/JOM.0000000000001850
Abstract: To examine associations between injury-related work disability duration and urban-rural place of residence and whether associations differed across the disability distribution and by industry sector. Workers’ compensation claims from six Canadian provinces were extracted between 2011 and 2015. Multivariable quantile regression models tested the associations between urban-rural place of residence and disability days paid between the 50th and 95th percentiles of the distribution. Compared to workers residing in metropolitan areas, those in all other areas experienced more disability days paid. Urban-rural differences increased toward the upper end of disability distribution and were largest in the construction, and transportation and warehousing sectors. Tailored interventions for workers in rural areas, particularly those in sectors associated with mobile work environments, may be warranted to reduce inequities in injury-related work disability duration by place of residence.
Publisher: BMJ
Date: 20-01-2012
Publisher: Public Library of Science (PLoS)
Date: 03-04-2018
Publisher: Springer Science and Business Media LLC
Date: 08-2020
Abstract: The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at a centre-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of about 20 fb − 1 for each experiment. The measurements used events containing one lepton and having different jet multiplicities in the final state. The results are quoted as fractions of W bosons with longitudinal ( F 0 ), left-handed ( F L ), or right-handed ( F R ) polarizations. The resulting combined measurements of the polarization fractions are F 0 = 0 . 693 ± 0 . 014 and F L = 0 . 315 ± 0 . 011. The fraction F R is calculated from the unitarity constraint to be F R = − 0 . 008 ± 0 . 007. These results are in agreement with the standard model predictions at next-to-next-to-leading order in perturbative quantum chromodynamics and represent an improvement in precision of 25 (29)% for F 0 ( F L ) with respect to the most precise single measurement. A limit on anomalous right-handed vector ( V R ), and left- and right-handed tensor ( g L , g R ) tWb couplings is set while fixing all others to their standard model values. The allowed regions are [ − 0 . 11 , 0 . 16] for V R , [ − 0 . 08 , 0 . 05] for g L , and [ − 0 . 04 , 0 . 02] for g R , at 95% confidence level. Limits on the corresponding Wilson coefficients are also derived.
Publisher: BMJ
Date: 20-01-2020
DOI: 10.1136/OEMED-2019-106211
Abstract: This study examined time to return-to-work (RTW) among direct healthcare and social workers with violence-related incidents compared with these workers with non-violence-related incidents in British Columbia, Canada. Accepted workers’ compensation lost-time claims were extracted between 2010 and 2014. Workers with violence-related incidents and with non-violence-related incidents were matched using coarsened exact matching (n=5762). The outcome was days until RTW within 1 year after the first day of time loss, estimated with Cox regression using piecewise models, stratified by injury type, occupation, care setting and shift type. Workers with violence-related incidents, compared with workers with non-violence-related incidents, were more likely to RTW within 30 days postinjury, less likely within 61–180 days, and were no different after 181 days. Workers with psychological injuries resulting from a violence-related incident had a lower likelihood to RTW during the year postinjury (HR 0.61, 95% CI 0.43 to 0.86). Workers with violence-related incidents in counselling and social work occupations were less likely to RTW within 90 days postinjury (HR 31–60 days: 0.67, 95% CI 0.48 to 0.95 and HR 61–90 days: 0.46, 95% CI 0.30 to 0.69). Workers with violence-related incidents in long-term care and residential social services were less likely to RTW within 91–180 days postinjury. Workers with psychological injuries, and those in counselling and social work occupations and in long-term care and residential social services, took longer to RTW following a violence-related incident than workers with non-violence-related incidents. Future research should focus on identifying risk factors to reduce the burden of violence and facilitate RTW.
Location: United States of America
No related grants have been discovered for Christopher McLeod.