A descriptive study of domestic and family violence presentations to an emergency department in the Northern Territory.

OBJECTIVE: Examine the nature of domestic and family violence (DFV) presentations to an ED in the Northern Territory and identify potential gaps in service delivery. METHODS: Prospective descriptive study of DFV presentations in November 2021. RESULTS: A total of 70 presentations were identified, representing 1.2% of all presentations aged 16 years and older. Disproportionately impacted were First Nations people (90%), women (77.1%) and those aged less than 40 years (67.1%). Most (81.4%) arrived outside of business hours and only 37.1% were assessed by the social worker. Case complexity was increased by high rates of homelessness (30%), concurrent alcohol consumption (44.3%) and pregnancy (11.1% of females). More than a third (37.1%) had attended on one to four occasions in the previous 6 months with a DFV-related injury. Compared to non-DFV attendances, the median ED length of stay was approximately twice as long (456 vs 210 min), admissions rates to the ED short stay unit five times higher (25.7% vs 5.7%; P < 0.01, odds ratio [OR] = 5.7 and 95% confidence interval [CI] = 3.3-9.8) and rates of self-discharge prior to completion of care 9 times higher (12.9% vs 1.5%; P < 0.01, OR = 9.5 and 95% CI = 4.6-19.7). CONCLUSION: The data highlights the need for a 24 h trauma-informed, culturally safe and integrated service to support people experiencing DFV. This could be achieved by a specialist unit designed and staffed by First Nations health practitioners.

The Maimed Martian, credible intervals and bias against benefit.

A sad little story about a maimed Martian astronaut is used to illustrate a method of improving confidence interval (CI) calculations. CIs in medical statistics are currently calculated from the data available in a clinical trial or meta-analysis considered in isolation from all other information available on earth. Likewise, the Martian in the story uses only information available to it, in isolation from further information from earth. However, there is further objective knowledge available to people on earth to improve the Martian's estimate. In the same way, we have objective prior knowledge available to us outside of the current clinical trial results which we can use to improve CI calculations. This prior knowledge is incorporated into the CI calculations using Bayesian methods. The objective prior knowledge that is available is the fact that there were researchers who felt it worthwhile to conduct the trial and journal editors who felt it worthwhile publishing the results. It is shown here that the use of this information contracts the width of the log CI by a factor of about three quarters on average. Unlike standard CIs, these new intervals also have the advantage of being directly interpretable in terms of probabilities. These probabilities also enable calculation of improved point estimates. These calculations are applied to 100 randomly selected Cochrane systematic reviews and show serious problems in assessing medical treatments. For treatments not involving new drugs or devices, it is shown that there is evidence of a bias towards a negative assessment. The calculations here make a quantitative adjustment for publication bias. They show that the proportion of negative assessments do not reflect an appropriate adjustment for publication bias.

From P-Values to Objective Probabilities in Assessing Medical Treatments.

The assessment of the effectiveness of a treatment in a clinical trial, depends on calculating p-values. However, p-values are only indirect and partial indicators of a genuine effect. Particularly in situations where publication bias is very likely, assessment using a p-value of 0.05 may not be sufficiently cautious. In other situations it seems reasonable to believe that assessment based on p-values may be unduly conservative. Assessments could be improved by using prior information. This implies using a Bayesian approach to take account of prior probability. However, the use of prior information in the form of expert opinion can allow bias. A method is given here that applies to assessments already included or likely to be included in the Cochrane Collaboration, excluding those reviews concerning new drugs. This method uses prior information and a Bayesian approach, but the prior information comes not from expert opinion but simply from the distribution of effectiveness apparent in a random sample of summary statistics in the Cochrane Collaboration. The method takes certain types of summary statistics and their confidence intervals and with the help of a graph, translates this into probabilities that the treatments being trialled are effective.

Hendra virus survival does not explain spillover patterns and implicates relatively direct transmission routes from flying foxes to horses.

Hendra virus (HeV) is lethal to humans and horses, and little is known about its epidemiology. Biosecurity restrictions impede advances, particularly on understanding pathways of transmission. Quantifying the environmental survival of HeV can be used for making decisions and to infer transmission pathways. We estimated HeV survival with a Weibull distribution and calculated parameters from data generated in laboratory experiments. HeV survival rates based on air temperatures 24 h after excretion ranged from 2 to 10 % in summer and from 12 to 33 % in winter. Simulated survival across the distribution of the black flying fox (Pteropus alecto), a key reservoir host, did not predict spillover events. Based on our analyses we concluded that the most likely pathways of transmission did not require long periods of virus survival and were likely to involve relatively direct contact with flying fox excreta shortly after excretion.

Impact of a structured intern education programme on clinical documentation in the emergency department.

OBJECTIVES: To evaluate the impact of More Learning for Interns in Emergency (MoLIE) on clinical documentation in the ED of a large regional hospital. METHODS: MoLIE was implemented at The Townsville Hospital (TTH) in 2010, and has since provided ED interns with structured off-floor teaching and a dedicated clinical supervisor. A pre- and post-intervention study was conducted using retrospective medical record review methodology. Charts were selected by identifying all TTH ED patients seen by interns in the period 2008-2011. Two hundred pre-intervention records (2008-2009) and 200 post-intervention records (2010-2011) were reviewed. These were randomly selected following an initial screen by an ED staff specialist. The quality of clinical documentation for five common ED presentations (asthma, chest pain, lacerations, abdominal pain and upper limb fractures) was assessed. For each presentation, documentation quality was scored out of 10 using predefined criteria. An improvement of two or more was thought to be clinically significant. Mean scores for each group were compared using a Student's t-test for independent samples. RESULTS: Mean documentation scores (and 95% confidence intervals) were 5.55 (5.17-5.93) in 2008, 5.42 (4.98-5.86) in 2009, 6.37 (5.99-6.75) in 2010 and 6.08 (5.71-6.45) in 2011. There was a statistically but not clinically significant improvement in scores pre- and post-intervention (P ≤ 0.001). CONCLUSION: The introduction of MoLIE was associated with a small but statistically significant improvement in documentation, despite an 80% increase in intern placements. These results suggest that structured training programmes have potential to improve intern performance while simultaneously enhancing training capacity. The impact on quality of care requires further evaluation.

Emergency department presentations during the State of Origin rugby league series: a retrospective statewide analysis.

OBJECTIVE: To evaluate the effect of the State of Origin rugby league series on the number of emergency department (ED) presentations in Queensland. DESIGN AND SETTING: Retrospective analysis of Emergency Department Information System data from 25 Queensland EDs for game 10s and matched control 10s during the annual State of Origin series from 2005 to 2012. The Queensland team won seven of the eight series in this period. MAIN OUTCOME MEASURES: Number of patients presenting to Queensland EDs on 24 game 10s and 80 control 10s. RESULTS: Proportionally, a binomial test indicated there were significantly fewer ED presentations on game 10s (49,702) than on control 10s (172,351) (P<0.001). On average, there were 2,154 presentations per 10 on control 10s and 2,071 on game 10s, representing a 4% reduction on game 10s. CONCLUSION: We found that the State of Origin series was associated with fewer ED presentations on game 10s. We believe these results have broader implications for workforce planning and resource allocation.

Fast versus slow bandaid removal: a randomised trial.

OBJECTIVE: To determine whether slow or fast bandaid removal is less painful. DESIGN, SETTING AND PARTICIPANTS: A prospective, randomised, crossover trial was carried out at James Cook University, Townsville. Participants were healthy volunteers from Years 2 and 3 of the James Cook University medical school program. INTERVENTIONS: Medium-sized bandaids were applied bilaterally in three standard body locations and removed using slow and fast techniques. MAIN OUTCOME MEASURES: Pain scores were assessed using an 11-point verbal numeric pain scale. RESULTS: 65 participants were included in the study. The overall mean pain score for fast bandaid removal was 0.92 and for slow bandaid removal was 1.58. This represents a highly significant difference of 0.66 (P < 0.001). CONCLUSION: In young healthy volunteers, fast bandaid removal caused less pain than slow bandaid removal.