Megan Bohensky

Older drivers, crashes and injuries

Objective: This article aimed to identify the main features of older driver casualty crashes, including detailed descriptions of injury outcomes. Methods: Data were obtained from the Transport Accident Commission insurance claims database for 2 groups of drivers: aged 41 to 55 years (middle-aged drivers) and aged 65 years and older (older drivers). Results: In terms of crash circumstances, the majority of crashes involved a collision with another vehicle (70.0% of middle-aged drivers and 68.7% of older drivers). The 2 main maneuvers at the time of crash were driving straight ahead (44.6% of middle-aged drivers and 42.8% of older drivers) and turning right (equivalent of left turn in North America; 15.2% of middle-aged drivers and 17.6% of older drivers). In terms of injury outcomes, older drivers sustained a significantly higher proportion of injuries to the thorax (30.9% compared to 18.5% of middle-aged drivers). Conversely, a significantly higher proportion of middle-aged drivers sustained some form of injury to the neck (30.6% compared to 12.1% of older drivers). Conclusion: These findings highlight the situations that are particularly risky for older drivers and provide important insights for developing solutions to reduce older driver crash and injury risk.

Adverse Outcomes Associated With Elective Knee Arthroscopy: A Population-Based Cohort Study

PURPOSE The aims of this study were to quantify the frequency of adverse outcomes after elective knee arthroscopies in Victoria, Australia, and to identify risk factors associated with adverse outcomes. METHODS We performed a retrospective, longitudinal cohort study of elective orthopaedic admissions using the Victorian Admitted Episodes database, a routinely collected public and private hospital episodes database linked to death registry data, from July 1, 2000, to June 30, 2009. Adverse outcome measures included pulmonary embolism (PE), deep vein thrombosis (DVT), hemarthrosis, effusion and synovitis, cellulitis, wound infection, synovial fistula, acute renal failure, myocardial infarct, stroke, and death. Patients were excluded if they had an additional procedure performed during the arthroscopy admission. We identified complications during the admission and within readmissions up to 30 days after the procedure. PE, DVT, and death within 90 days of the arthroscopy episode were also examined. We used logistic regression analysis to identify risk factors associated with complications. RESULTS After we excluded 16,807 patients (8.5%) with an additional procedure during their admission, there were 180,717 episodes involving an elective arthroscopy during the period studied. The most common adverse outcomes within 30 days were DVT (579, 0.32%), effusion and synovitis (154, 0.09%), PE (147, 0.08%), and hemarthrosis (134, 0.07%). The 30-day orthopaedic readmission rate was 0.77%, and there were 55 deaths (0.03%). Within 90 days of arthroscopy, we identified 655 events of DVT (0.36%) and 179 PE events (0.10%). Logistic regression analysis identified that potential risk factors for complications were older age, presence of comorbidity, being married, major mechanical issues, and having the procedure performed in a public hospital. CONCLUSIONS Our study found 6.4 adverse outcomes per 1,000 elective knee arthroscopy procedures (0.64%), with the 3 most common complications being DVT, effusion and synovitis, and PE. We have also identified risk factors for adverse outcomes, particularly chronic kidney disease, myocardial infarction, cerebrovascular accident, and cancer. LEVEL OF EVIDENCE Level III, retrospective cohort study.

A survey of Australian clinical registries: can quality of care be measured?

Background:  Clinical quality registries gather and analyse information to monitor and enhance the quality of care received by patients. The aim of the present study was to determine the attributes of Australian clinical registries to identify their capacity to accurately assess quality of care.

Chronic Disease Management A Review of Current Performance Across Quality of Care Domains and Opportunities for Improving Osteoarthritis Care

Osteoarthritis is the most prevalent chronic joint disease worldwide. The incidence and prevalence are increasing as the population ages and lifestyle risk factors such as obesity increase. There are several evidence-based clinical practice guidelines available to guide clinician decision making, but there is evidence that care provided is suboptimal across all domains of quality: effectiveness, safety, timeliness and appropriateness, patient-centered care, and efficiency. System, clinician, and patient barriers to optimizing care need to be addressed. Innovative models designed to meet patient needs and those that harness social networks must be developed, especially to support those with mild to moderate disease.

Trends in elective knee arthroscopies in a population-based cohort 2000-2009

Objective: To assess the use of elective knee arthroscopy procedures for all adults 20 years and older, and for adults with a concomitant diagnosis of osteoarthritis (OA) in Victoria.

Implications of Vision Testing for Older Driver Licensing

Objectives. A range of medical conditions can lead to visual impairments either through effects on the eye or the visual pathways and brain. The prevalence of visual impairment increases with age. Furthermore, research evidence has shown that aging is related to a number of other processes that can lead to changes in cognitive functioning and sensory perception that may adversely affect driving (Marottoli and Drickamer, 1993; Stelmach and Nahom, 1992). This combination of factors is thought to contribute to older driver crash risk (Hakamies-Blomqvist, 1993; Stutts et al., 1998). Licensing authorities are the primary entity responsible for monitoring the medical fitness of their license holders. While it is important for licensing bodies to identify drivers who have conditions that place them at a heightened risk for crashes, at the same time, they should not unfairly restrict the mobility of disabled or aging drivers. Therefore, it is important that the licensing criteria for visual fitness to drive are based on scientific evidence establishing their effectiveness and predictive value for poor driving performance and unaceptable crash risk. The aim of this paper is to assess whether current licensing guidelines are consistent with the available scientific evidence on the effect of visual impairment on driving with a specific focus on older drivers. Methods. This article describes current licensing guidelines for vision from selected Western jurisdictions and reviews the available scientific evidence on visual impairment and driving performance on which such licensing decisions are based. Results. The findings of the review indicate that the predictive values of the vision tests commonly used for licensing decisions by the selected authorities are inconclusive. Discussion. The functional attributes of vision currently assessed for licensing do not adequately explain unsafe driving performance. Differences were observed across vision requirements for the selected jurisdictions, possibly reflecting the equivocal and inconclusive findings linking specific visual functions and impairment with crash risk. Setting benchmarks or performance thresholds on selected visual tests may be problematic for older drivers in particular, who are most vulnerable to underperforming. Driving involves a complex set of skills, and it is proposed that decisions about vision for safe driving need to be considered in the context of the drivers overall health and other functional abilities.

The extra resource burden of in-hospital falls: a cost of falls study

Objective: To quantify the additional hospital length of stay (LOS) and costs associated with in‐hospital falls and fall injuries in acute hospitals in Australia.

Development and validation of reporting guidelines for studies involving data linkage

Objective: Data or record linkage is commonly used to combine existing data sets for the purpose of creating more comprehensive information to conduct research. Linked data may create additional concerns about error if cases are not linked accurately. It is important that factors compromising the quality of studies using linked data be reported in a clear and consistent way that allows readers and researchers to accurately appraise the results. The aim of this study was to develop and test reporting guidelines for evaluating the methodological quality of studies using linked data.

Substantial rise in the lifetime risk of primary total knee replacement surgery for osteoarthritis from 2003 to 2013: An international, population-level analysis

OBJECTIVE To estimate and compare the lifetime risk of total knee replacement surgery (TKR) for osteoarthritis (OA) between countries, and over time. METHOD Data on primary TKR procedures performed for OA in 2003 and 2013 were extracted from national arthroplasty registries in Australia, Denmark, Finland, Norway and Sweden. Life tables and population data were also obtained for each country. Lifetime risk of TKR was calculated for 2003 and 2013 using registry, life table and population data. RESULTS Marked international variation in lifetime risk of TKR was evident, with females consistently demonstrating the greatest risk. In 2013, Finland had the highest lifetime risk for females (22.8%, 95%CI 22.5-23.1%) and Australia had the highest risk for males (15.4%, 95%CI 15.1-15.6%). Norway had the lowest lifetime risk for females (9.7%, 95%CI 9.5-9.9%) and males (5.8%, 95%CI 5.6-5.9%) in 2013. All countries showed a significant rise in lifetime risk of TKR for both sexes over the 10-year study period, with the largest increases observed in Australia (females: from 13.6% to 21.1%; males: from 9.8% to 15.4%). CONCLUSIONS Using population-based data, this study identified significant increases in the lifetime risk of TKR in all five countries from 2003 to 2013. Lifetime risk of TKR was as high as 1 in 5 women in Finland, and 1 in 7 males in Australia. These risk estimates quantify the healthcare resource burden of knee OA at the population level, providing an important resource for public health policy development and healthcare planning.

Return to work outcomes for workers with mental health conditions: A retrospective cohort study.

OBJECTIVES The aims of this study were to describe predictors of sustained return to work (RTW) among a cohort of workers with compensated work-related mental health conditions (MHCs); and to examine predictors of subsequent absences due to the same condition. METHODS This study was a retrospective analysis of compensation claims data in Victoria, Australia. We selected workers with an accepted wage replacement claim due to a work-related MHC from 1 January 2002 to 31 December 2009, with two years of follow-up data. RESULTS We identified 8358 workers meeting our inclusion criteria. The median age of workers was 44 years (Interquartile range (IQR): 36-51) and 56% were female. In a multivariable Cox regression analysis, older age, being from a small organisation, working in some specific industry segments, consulting a psychiatrist or psychologist, using medications, and having a previous claim were all associated with a delayed RTW. Workers experiencing work pressure, assault/workplace violence or other mental stress factors, working in the public administration and safety industry and having a medical incapacity certification between 3-4 days and 5-7 days had a higher rate of multiple RTW attempts. CONCLUSION This study identified a number of risk factors associated with a delayed RTW and multiple attempts at RTW. Predictors may help identify high-risk groups and facilitate the RTW process of workers with MHCs.