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Biomedical subjects

Joan Ozanne-Smith

Publications and source records attributed to Joan Ozanne-Smith.

11 recordsLinked to original sources
PubMed2006

Motor vehicle exhaust gas suicide in Victoria, Australia 1998-2002.

Motor vehicle exhaust gas suicide (MVEGS) is the second most frequent method of suicide in Victoria, Australia. It is a highly lethal method of suicide with 1.5 deaths for every hospital admission. Australian regulations require all vehicles manufactured since 1998 to have a maximum carbon monoxide exhaust emission level of 2.1 g/km, reduced from the previous level of 9.6 g/km. Information surrounding all Victorian MVEGS between 1998-2002 was analyzed to determine whether suicides occurred in vehicles with the lower emission levels. Between 1998-2002, 607 suicides by this means were recorded while just 393 hospital admissions were recorded for the same period. Mean carboxyhaemoglobin levels were significantly lower in fatalities using vehicles manufactured from 1998, however suicide still occurred in these vehicles (n = 25). The extent to which the new regulations contributed to the relatively low rate of suicide in vehicles less than 5 years old compared to their frequency in the fleet remains unknown. Based on international experience and the age of the Victorian vehicle fleet, it may take well over a decade until substantial decreases in MVEGS are observed in the absence of active preventive measures.

Australia↗
PubMed2006

Private hospital insurance status among a state-wide injured population.

Injury is a leading cause of inpatient hospital episodes. Over a 4-year period (1997-2000) the Australian Government introduced measures to support the private health insurance industry by providing incentives for people to take up private health insurance (PHI) in order to take the pressure off public hospitals. This study examined the levels of PHI for moderately and severely injured people in Victoria as a way of determining the effectiveness of government incentives. The method involved an analysis of all Victorian public and private hospital injury admissions between July 2000 and June 2003. We found that people with injuries, either unintentional or intentional, had lower levels of PHI than state norms. While numbers of injured patients occupying private hospital beds initially increased, levels then dropped below the levels before the introduction of the incentives. The burden of injury is substantial and suggests that incentives need to be targeted towards at-risk groups.

Hospitalization↗
PubMed2006

A privacy challenge to longitudinal study methods: patient-derived codes.

Recent changes to privacy legislation in Australia have resulted in more stringent requirements with respect to maintaining the confidentiality of patient health information. We describe a method employed to de-identify health information collected in a longitudinal study using codes. Using a patient-derived code that did not change during the life of the study follow-up resulted in errors in a quarter of the follow-up surveys. This may introduce bias that could compromise the validity of the study. Alternative methods of coding may alleviate some of these issues. However, removal of some of the constraints imposed by interpretations of privacy legislation may be the best way forward.

Cohort Studies↗
PubMed2005

An evaluation of the assessment of quality of life utility instrument as a measure of the impact of injury on health-related quality of life.

The Assessment of Quality of Life (AQoL) is a generic health-related quality of life (HRQL) measure. It is the only HRQL instrument, currently available, that incorporates health preference values derived from an Australian population and has been extensively trialled in over 40 studies. However, prior to this study, it had not been used to measure HRQL in injury patients. The aim of this study was to evaluate the AQoL, as a measure of the impact of injury on HRQL, by examining its correlation with other commonly used measures of health outcome and its ability to discriminate between groups with injuries of varying type and severity. A total of 221 admitted injury patients, aged 18-74 years, were recruited into the study from four major Victorian metropolitan hospitals and followed up over 12 months. The AQoL and the SF-36 were administered to obtain retrospective measures of pre-injury HRQL and health status with post-injury measurements obtained at five intervals post-injury (to 12 months). A preliminary analysis of data from this study showed the AQoL was positively related to other common outcome measures and, overall, showed a strong correlation with the SF-36 Physical Component Summary and a moderate correlation with the Mental Component Summary. It also demonstrated good discrimination between groups on the basis of type of injury, body region injured and severity of injury. While further testing of the AQoL, in this context, is still necessary, this study suggests that the AQoL may be a useful measure of the impact of injury on HRQL.

Activities of Daily Living↗
PubMed2005

The use of injury surveillance databases to identify emerging injury hazards.

Among the many valuable uses of injury surveillance is the potential to alert health authorities and societies in general to emerging injury trends, facilitating earlier development of prevention measures. Other than road safety, to date, few attempts to forecast injury data have been made, although forecasts have been made of other public health issues. This may in part be due to the complex pattern of variance displayed by injury data. The profile of many injury types displays seasonality and diurnal variance, as well as stochastic variance. The authors undertook development of a simple model to forecast injury into the near term. In recognition of the large numbers of possible predictions, the variable nature of injury profiles and the diversity of dependent variables, it became apparent that manual forecasting was impractical. Therefore, it was decided to evaluate a commercially available forecasting software package for prediction accuracy against actual data for a set of predictions. Injury data for a 4-year period (1996 to 1999) were extracted from the Victorian Emergency Minimum Dataset and were used to develop forecasts for the year 2000, for which data was also held. The forecasts for 2000 were compared to the actual data for 2000 by independent t-tests, and the standard errors of the predictions were modelled by stepwise hierarchical multiple regression using the independent variables of the standard deviation, seasonality, mean monthly frequency and slope of the base data (R = 0.93, R(2) = 0.86, F(3, 27) = 55.2, p < 0.0001). Significant contributions to the model included the SD (beta = 1.60, p < 0.001), mean monthly frequency (beta = -0.72, p < 0.002), and the seasonality of the data (beta = 0.16, p < 0.02). It was concluded that injury data could be reliably forecast and that commercial software was adequate for the task. Variance in the data was found to be the most important determinant of prediction accuracy. Importantly, automated forecasting may provide a vehicle for identifying emerging trends.

Accident Prevention↗
PubMed2004

Are current playground safety standards adequate for preventing arm fractures?

OBJECTIVE: To assess compliance with current standards of playgrounds where children have sustained a fall-related arm fracture. DESIGN, SETTING AND PARTICIPANTS: Between October 2000 and December 2002, a consecutive prospective series of 402 children aged under 13 years who fell from playground equipment and sustained an arm fracture was identified by emergency department staff in five Victorian hospitals. Trained field testers measured playground equipment height, surface type and depth, and surface impact attenuation factors to determine compliance with safety standards. MAIN OUTCOME MEASURES: Playground compliance with current Australian safety standards. RESULTS: Ninety-eight percent of playgrounds had a recommended type of surface material. The mean surface depth was 11.1 cm (SD, 5.0 cm) and the mean equipment height was 2.04 m (SD, 0.43 m). Although over 85% of playgrounds complied with recommended maximum equipment height and surface impact attenuation characteristics, only 4.7% complied with recommended surface depth. CONCLUSION: Playgrounds where children have sustained an arm fracture generally comply with all important safety recommendations except surface depth. Playground fall-related arm fracture requires specific countermeasures for prevention, distinct from head injury prevention guidelines.

Accidental Falls↗
PubMed2004

Road traffic injury--a global public health scourge: a review for World Health Day 2004 (April 7).

OBJECTIVE: Globally in 2000, 1.2 million deaths resulted from road traffic injury (RTI) and about 10 times this number were injured. Because of the size of the problem, its expected growth and its preventability, World Health Day 2004 (April 7) was devoted to RTI. This review highlights attention to RTI by the ANZJPH and investigates relevance to the developing world, where 90% of all RTI deaths now occur. METHOD: All articles published by the ANZJPH over the five-year period 1999-2004, which met the World Health Organization definition of RTI, were reviewed. RESULTS: The eight studies selected and reviewed focused particularly on young drivers, alcohol use and Indigenous Australians, using a range of research and evaluation methods. Risk factors identified including widespread risky driving behaviour by young males and alcohol involvement. Intervention successes included legislative change regarding utility passengers, current vehicle inspection certificate and effects associated with the lead-up to New Zealand's 1992 Transport Act. CONCLUSIONS: The dramatic and continued reduction in Australia's road toll following peak rates in the 1960s has relied on scientific research, such as that reviewed here, for its effective evidence base. This review indicates that RTI is established on the public health agenda in Australia--a key aim of WHO's five-year strategy, for emulation by developing regions and nations. IMPLICATIONS: High-income countries such as Australia and New Zealand have the knowledge, expertise and also the responsibility to assist regional low- and middle-income countries to counter the growing scourge of RTI that accompanies rapid motorisation.

Accidents, Traffic↗
PubMed2002

Eye injury after jellyfish sting in temperate Australia.

Although jellyfish stings are an uncommon medical problem in temperate Australia, significant morbidity can occur, particularly in association with infestations of large numbers of jellyfish in public swimming areas. We report a case of a jellyfish sting-related eye injury, probably caused by the "hair" jellyfish (Cyanea capillata) from southeast Australia. The patient, a 54-year-old man, was stung while swimming without goggles in a jellyfish-infested bay. He experienced severe pain in his right eye, requiring narcotic analgesia, and had decreased visual acuity associated with right-sided facial swelling. Although usually brief and self-limiting, eye injuries after jellyfish stings should be assessed and treated as early as possible to reduce the risk of longer term sequelae. Water safety campaigns should incorporate information on the prevention and early treatment of such stings.

Animals↗