Evaluating the impact of prehospital care on mortality following major trauma in New Zealand: a retrospective cohort study.

BACKGROUND: Injury is a leading cause of death and health loss in New Zealand and internationally. The potentially fatal or severe consequences of many injuries can be reduced through an optimally structured prehospital trauma care system that can provide timely and appropriate care. OBJECTIVE: To investigate the relationship between emergency medical services (EMS) care and survival to hospital for major trauma cases in New Zealand. METHODS: This project is a retrospective cohort study of New Zealand major trauma cases attended by EMS providers over a 2-year period. Outcomes include survival to hospital and survival in hospital for at least 24 hours. The project has three phases: (1) identification of the cohort and assembling a bespoke longitudinal dataset linking EMS, New Zealand Major Trauma Registry and Coronial data; (2) describing the pathways and processes of care to inform an investigation of the relationships between types of EMS care and survival using propensity score modelling to adjust for case-mix differences; (3) assessment of the implications for future practice, policy and research. DISCUSSION: The study findings will help identify opportunities to optimise the delivery of EMS care in New Zealand by informing the development or revision of existing major trauma EMS policies and guidelines, and to provide a baseline for monitoring the impact of future initiatives. Establishing an evidence-base will support a whole-of-system appraisal that could include broader complex variables relating to healthcare services throughout the continuum of trauma care.

Potential survivability of prehospital injury deaths in New Zealand: a cross-sectional study.

INTRODUCTION: Acknowledging a notable gap in available evidence, this study aimed to assess the survivability of prehospital injury deaths in New Zealand. METHODS: A cross-sectional review of prehospital injury death postmortems (PM) undertaken during 2009-2012. Deaths without physical injuries (eg, drownings, suffocations, poisonings), where there was an incomplete body, or insufficient information in the PM, were excluded. Documented injuries were scored using the AIS and an ISS derived. Cases were classified as survivable (ISS <25), potentially survivable (ISS 25-49) and non-survivable (ISS >49). RESULTS: Of the 1796 cases able to be ISS scored, 11% (n=193) had injuries classified as survivable, 28% (n=501) potentially survivable and 61% (n=1102) non-survivable. There were significant differences in survivability by age (p=0.017) and intent (p<0.0001). No difference in survivability was observed by sex, ethnicity, day of week, seasonality or distance to advanced-level hospital care. 'Non-survivable' injuries occurred more commonly among those with multiple injuries, transport-related injuries and aged 15-29 year. The majority of 'survivable' cases were deceased when found. Among those alive when found, around half had received either emergency medical services (EMS) or bystander care. One in five survivable cases were classified as having delays in receiving care. DISCUSSION: In New Zealand, the majority of injured people who die before reaching hospital do so from non-survivable injuries. More than one third have either survivable or potentially survivable injuries, suggesting an increased need for appropriate bystander first aid, timeliness of EMS care and access to advanced-level hospital care.

Lessons for achieving health equity comparing Aotearoa/New Zealand and the United States.

Aotearoa/New Zealand (Aotearoa/NZ) and the United States (U.S.) suffer inequities in health outcomes by race/ethnicity and socioeconomic status. This paper compares both countries' approaches to health equity to inform policy efforts. We developed a conceptual model that highlights how government and private policies influence health equity by impacting the healthcare system (access to care, structure and quality of care, payment of care), and integration of healthcare system with social services. These policies are shaped by each country's culture, history, and values. Aotearoa/NZ and U.S. share strong aspirational goals for health equity in their national health strategy documents. Unfortunately, implemented policies are frequently not explicit in how they address health inequities, and often do not align with evidence-based approaches known to improve equity. To authentically commit to achieving health equity, nations should: 1) Explicitly design quality of care and payment policies to achieve equity, holding the healthcare system accountable through public monitoring and evaluation, and supporting with adequate resources; 2) Address all determinants of health for individuals and communities with coordinated approaches, integrated funding streams, and shared accountability metrics across health and social sectors; 3) Share power authentically with racial/ethnic minorities and promote indigenous peoples' self-determination; 4) Have free, frank, and fearless discussions about impacts of structural racism, colonialism, and white privilege, ensuring that policies and programs explicitly address root causes.

Preventable injury deaths: identifying opportunities to improve timeliness and reach of emergency healthcare services in New Zealand.

BACKGROUND: Traumatic injury is a leading cause of premature death and health loss in New Zealand. Outcomes following injury are very time sensitive, and timely access of critically injured patients to advanced hospital trauma care services can improve injury survival. OBJECTIVE: This cross-sectional study will investigate the epidemiology and geographic location of prehospital fatal injury deaths in relation to access to prehospital emergency services for the first time in New Zealand. DESIGN AND STUDY POPULATION: Electronic Coronial case files for the period 2008-2012 will be reviewed to identify cases of prehospital fatal injury across New Zealand. METHODS: The project will combine epidemiological and geospatial methods in three research phases: (1) identification, enumeration, description and geocoding of prehospital injury deaths using existing electronic injury data sets; (2) geocoding of advanced hospital-level care providers and emergency land and air ambulance services to determine the current theoretical service coverage in a specified time period and (3) synthesising of information from phases I and II using geospatial methods to determine the number of prehospital injury deaths located in areas without timely access to advanced-level hospital care. DISCUSSION: The findings of this research will identify opportunities to optimise access to advanced-level hospital care in New Zealand to increase the chances of survival from serious injury. The resulting epidemiological and geospatial analyses will represent an advancement of knowledge for injury prevention and health service quality improvement towards better patient outcomes following serious injury in New Zealand and similar countries.

Equivalence of the short form of the reynolds adolescent depression scale across groups.

The present study examines the equivalence of the short-form version of the Reynolds Adolescent Depression Scale (RADS-SF) for measuring depression in adolescents across gender, age, and ethnic groups. A sample of 8,692 randomly selected New Zealand secondary school students participated in the Youth'07 Health and Wellbeing Survey that included the RADS-SF. The reliability was assessed using Cronbach's alpha and item-total correlations. The validity was assessed using multigroup confirmatory factor analysis, and correlation to other questions in the survey considered likely to be associated with depression. The RADS-SF scores ranged from 10 to 40 (Mdn = 18), with a mean score of 19.14 (SD = 6.19) and Cronbach's alpha of .88. Configural, metric, and scalar equivalence was supported across gender, age, and ethnic groups (New Zealand European, Maori, Pacific, Asian, and Other), with all tested models having good fit to the data. The correlations between the RADS-SF and other variables such as suicidal ideation and well-being were also equivalent across groups. The RADS-SF was found to be equivalent in measuring depression across age, ethnic groups, and gender in a large population of New Zealand adolescents.

Factors associated with non-participation in one or two follow-up phases in a cohort study of injured adults.

OBJECTIVE: To identify factors associated with non-participation at the 12-month and 24-month follow-up phases of a prospective cohort study of injury outcomes. METHODS: Associations between non-participation at follow-up phases and a range of sociodemographic, injury, health, outcome and administrative factors were examined. RESULTS: An individual's non-participation at 12 months did not necessarily mean non-participation at 24 months. Sociodemographic factors were the most salient for non-participation, regardless of the number of follow-up phases or specific phase considered. CONCLUSIONS: Retention rates in prospective cohort studies of injury outcome may be improved by follow-up of everyone irrespective of previous non-participation, focusing resources to retain men, young adults, indigenous people and those living with people other than family members, and by ensuring that multiple alternative participant contacts are obtained. There is sufficient evidence to be concerned about potential bias given that several of the factors we, and others, have identified as associated with non-participation are also associated with various functional and disability outcomes following injury. This suggests detailed investigations are warranted into the effect non-participation may be having on the estimates for various outcomes.

Prevalence of sleepiness while driving four-wheel motor vehicles in Fiji: a population-based survey (TRIP 9).

INTRODUCTION: Sleepiness has been shown to be a risk factor for road crashes in high-income countries, but has received little attention in low- and middle-income countries. We examined the prevalence of sleepiness and sleep-related disorders among drivers of four-wheel motor vehicles in Fiji. METHOD: Using a two-stage cluster sampling roadside survey conducted over 12 months, we recruited a representative sample of people driving four-wheel motor vehicles on the island of Viti Levu, Fiji. A structured interviewer-administered questionnaire sought self-report information on driver characteristics including sleep-related measures. RESULTS: The 752 motor vehicle drivers recruited (84% response rate) were aged 17-75 years, with most driving in Viti Levu undertaken by male subjects (93%), and those identifying with Indian (70%) and Fijian (22%) ethnic groups. Drivers who reported that they were not fully alert accounted for 17% of driving, while a further 1% of driving was undertaken by those who reported having difficulty staying awake or feeling sleepy. A quarter of the driving time among 15-24-year-olds included driving while sleepy or not fully alert, with a similar proportion driving while chronically sleep deprived (ie, with less than five nights of adequate sleep in the previous week=27%). Driving while acutely or chronically sleep deprived was generally more common among Fijians compared with Indians. CONCLUSIONS: Driving while not fully alert is relatively common in Fiji. Sleepiness while driving may be an important contributor to road traffic injuries in this and other low- and middle-income countries.

Population-based characteristics of fatal and hospital admissions for poisoning in Fiji: TRIP Project-11.

This study investigated the incidence and characteristics of poisoning fatalities and hospital admissions among indigenous Fijians and Indians in Viti Levu, Fiji. Individuals with a mechanism of injury classified as poisoning were identified using the Fiji injury surveillance in hospitals system, a population-based registry established for 12 months in Viti Levu, and analysed using population-based denominators. The mean annual rates of fatalities and hospitalisations were 2.3 and 26.0 per 100 000, respectively. Over two-thirds of poisonings occurred among people of Indian ethnicity. Most intentional poisoning admissions occurred among women (58.3%) and in 15-29-year-old individuals (73.8%). Unintentional poisoning admission rates were highest among Indian boys aged 0-14 years. While over 75% of events occurred at home, the substances involved were not systematically identified. The findings indicate the need for a strategy that addresses the differing contexts across age group, gender and ethnicity, and a lead agency responsible for implementing and monitoring its effectiveness.

Motorcycle-related trauma in the Philippines resulting in hospital admission: The epidemiology of cases at the Philippine General Hospital

OBJECTIVE: To describe the epidemiology of motorcycle related trauma (MCRT) admitted to the Philippine General Hospital (PGH). METHOD: Restrospective analysis of records of motorcycle crash victims admitted to the Trauma Division, Department of Surgery, PGH from January 1, 2004 to December 31, 2006. RESULTS: MCRT victims comprised 6.7% of all trauma admissions to PGH. Most were males (83.8%) and young adults (median age 26 years), and 38.6% were road users other than motorcycle drivers or passengers (primarily pedestrians). Two-thirds of victims suffered multiple injuries (68.9%). Common injuries were maxillo-facial (78%), fractures of the lower and upper extremeities (46.9% and 36.1%, respectively) and traumatic brain injuries (40.7%). The median length of hospital stay was 13 days. The in-hospital mortality rate was 5.8%, 43% of fatalities were due to traumatic brain injuries. Based on self-reported information, 88% of the motorcyclist victims were riding under the influence of alcohol, and 13% were wearing helmets at the time of the crash. CONCLUSIONS: A significant proportion of MCRT victims are not motorcycle users. There is an urgent need to implement effective strategies to prevent MCRT in the Philippines, including the implementation of enforcement of national laws agains drink driving and use of standard helmets.

Monitoring immigrant health and wellbeing in New Zealand: addressing the tyranny of misleading averages.

The importance of monitoring immigrant health and wellbeing outcomes following (re)settlement is acknowledged at a global level. Whilst many countries, including New Zealand, have adopted settlement strategies for the purposes of facilitating the integration of immigrants, measuring the success of such strategies is often hampered by two factors. The first is inadequate, and sometimes nonexistent, data pertaining to immigrant populations across a range of health and wellbeing indicators, and the second is the highly politicised nature of research in this area. This paper discusses these twin challenges in relation to New Zealand's Settlement National Action Plan adopted in 2007 and other relevant social policy documents. It argues that the absence of consistently collected and reported country of birth data in public health settings inhibits the ability of immigrant health and wellbeing advocates to monitor the progress of government and other agencies in achieving the goals of the Action Plan specifically, and social policy more broadly. In order to address this situation, routine collection, disaggregation and reporting of country of birth data across the public health system and further investment in research on immigrant populations in New Zealand is recommended.

Prevalence of post-traumatic stress disorder among children and adolescents who survive road traffic crashes: a systematic review of the international literature.

While road traffic crashes are known to have a significant impact in terms of deaths and hospitalisations, quantifying the burden of psychological sequelae is more challenging. This systematic review critically evaluates published studies designed to estimate the prevalence of post-traumatic stress disorder among children and adolescents who have survived a road crash. Most studies have focused on injured school-aged children and adolescents, and estimate the occurrence of this condition to be between 12% and 46% in the first 4 months following crash involvement and between 13% and 25% 4-12 months following the crash. The relatively high prevalence of post-traumatic stress disorder following one of the commonest causes of injury underscores the need for greater vigilance and active management to mitigate the adverse consequences on the health and development of young crash survivors. The findings also emphasise the important role that child health professionals must play in promoting strategies that prevent road traffic crashes.

Immigrant status and acculturation influence substance use among New Zealand youth.

OBJECTIVE: To investigate the associations between generational status, acculturation and substance use among immigrant and non-immigrant secondary school students in New Zealand. METHODS: A nationally representative sample of secondary school students in New Zealand was selected using a two-stage cluster sample design. Of the 8,999 students in the sample, 23.81% were first-generation immigrants and 20.90% were second-generation immigrants; the remaining 55.29% students are collectively referred to as 'non-immigrant' peers. Logistic regression models adjusted the associations of interest for age, gender, ethnicity, socioeconomic status and experience of ethnic discrimination. RESULTS: First and second-generation immigrants showed significantly lower risks of smoking cigarettes compared with their non-immigrant peers. Similar trends were apparent for consuming alcohol and marijuana weekly. The inclusion of some characteristics suggestive of acculturation in multivariable models did not influence the relationship between generational status and smoking cigarettes, but attenuated the apparent protective effect of being a first-generation immigrant with regard to alcohol and marijuana use. CONCLUSIONS AND IMPLICATIONS: The study shows the lower likelihood of substance use among newer immigrants in a nationally representative sample of New Zealand youth. Policies and health programs that build on this positive profile and reduce the risk of adverse changes over time require attention.

Do schools influence student risk-taking behaviors and emotional health symptoms?

PURPOSE: Many schools engage in health promotion, health interventions, and services aimed at improving the health and well-being outcomes for students. The purpose of this study was to examine the effects of schools on student health risk-taking behaviors and depressive symptoms. METHOD: A nationally representative sample (n = 9,056) of students from 96 secondary schools completed a health and well-being survey using Internet Tablets that included questions on school climate, health risk-taking behaviors, and mental health. Teachers (n = 2,901) and school administrators (n = 91) completed questionnaires on aspects of the school climate which included teacher well-being and burnout, the staff work environment, health and welfare services for students, and school organizational support for student health and well-being. Multilevel models were used to estimate school effects on the health risk-taking behaviors and depression symptoms among students. RESULTS: Schools where students reported a more positive school climate had fewer students with alcohol use problems, and fewer students engaging in violence and risky motor vehicle behaviors. Schools where teachers reported better health and welfare services for students had fewer students engaging in unsafe sexual health behaviors. Schools where teachers reported higher levels of well-being had fewer students reporting significant levels of depressive symptoms. CONCLUSIONS: More positive school climates and better school health and welfare services are associated with fewer health risk-taking behaviors among students. However, the overall school effects were modest, especially for cigarette use and suicidal behaviors.

Health and well-being of young people who attend secondary school in Aotearoa, New Zealand: what has changed from 2001 to 2007?

AIM: To describe the changes in the health and well-being of secondary school students from 2001 to 2007. METHODS: A total of 9107 secondary school students were randomly selected to participate in a comprehensive health and well-being survey using Internet tablets conducted in 2007. Comparisons are made with the first health and well-being survey conducted in 2001. RESULTS: Students from 2007 reported good relationships with their families, people in their schools and neighbourhoods. Compared with the 2001 survey, students surveyed in 2007 were more likely to report positive mental health, better nutritional habits and higher levels of physical activity, and were less likely to report using tobacco and marijuana than students in 2001. In addition, the proportion of students who reported significant depressive symptoms and suicidal behaviours had decreased since 2001. However, concerning proportions of students in 2007 reported: binge drinking, experience of physical and sexual abuse, and witnessing violence in their homes. CONCLUSION: While students' health and well-being have significantly improved from 2001 to 2007, there remain significant areas of concern.

Reducing ethnic disparities in the quality of trauma care: an important research gap.

OBJECTIVE: To identify interventions for reducing ethnic disparities in the quality of trauma care. BACKGROUND: Variation in the quality of health care is recognized as an important contributor to ethnic disparities in many domains of health. Although recent articles document ethnic variations in the quality of trauma care in several countries, strategies that address these disparities have received little attention. METHODS: Systematic review of intervention studies designed to reduce ethnic disparities in trauma care. RESULTS: Our systematic literature review revealed no evaluations of interventions designed to reduce ethnic disparities in trauma care. A scan of the equivalent literature in other health care settings revealed 3 types of strategies that could serve as promising interventions that warrant further investigation in the trauma care setting: (1) improving cultural competency of service providers, (2) addressing the effects of health literacy on the quality of trauma care, and (3) quality improvement strategies that recognize equity as a key dimension of quality. The trauma coordinator role may help address some aspects relating to these themes although reducing disparities is likely to require broader system-wide policies. CONCLUSIONS: The implementation and robust evaluation of strategies designed to reduce ethnic disparities in trauma care are long overdue.

Experiences of whanau/families when injured children are admitted to hospital: a multi-ethnic qualitative study from Aotearoa/New Zealand.

OBJECTIVES: Several quantitative studies in the international literature have described disparities in the provision of and access to health services for a variety of health conditions among 'minority' populations. This New Zealand qualitative study aimed to explore and describe the experiences of indigenous Maori and Pacific families (both minority populations) and Pakeha (New Zealand European) families when their children were admitted to hospital for an unintended injury. DESIGN: Twenty-three children (eight Máori, eight Pacific and seven Pákeha) who were admitted to hospital following an injury were selected using maximum variation sampling from a trauma database and snowball sampling. In-depth individual and group interviews undertaken with the child's whanau/family explored the issues they encountered in the hospital setting. The data were analysed by key ideas and coded into main themes. Each strand was analysed separately by lead researchers of the same ethnic group prior to a comparative synthesis of the overall findings. RESULTS: While many families praised the dedication of the staff, the interviews revealed important concerns regarding their encounters with hospitals and related health and support services. These could be broadly characterised as (a) inadequate communication and information; (b) difficulties negotiating an environment perceived as foreign; (c) the stress of conflicting demands placed on families; and (d) issues relating to ethnicity and cultural miscommunication. Of note, many Maori and Pacific whanau/families felt particularly alienated within the hospital setting and did not appear to see themselves as being entitled to high-quality information or services. CONCLUSION: The findings have important implications for the structure, professional and institutional practices in the delivery of health services. The research also indicates the need for wider societal policies that increase Maori and Pacific whanau/families' sense of entitlement to the full range of available support services, and reduce alienation within public institutions such as hospitals.

Epidemiology of noise-induced hearing loss in New Zealand.

INTRODUCTION: Hearing loss is a major cause of disability in the world. Occupational noise exposure is likely to contribute to a very high proportion of the cases of hearing loss in adults. Concern has been raised by the Accident Compensation Corporation (ACC) in New Zealand about the fact that the number of new cases of noise-induced hearing loss (NIHL) is not declining, despite the health and safety legislation and establishment of hearing conservation programmes in industry. To inform strategies for prevention, a review of the burden of NIHL in New Zealand was undertaken, particularly focusing on the trends in compensation claims and costs, and the associated sociodemographic patterns. METHODS: A review of the peer-reviewed published literature was conducted to identify national and international estimates of NIHL prevalence. The ACC claims dataset (July 1995 to June 2006) was analysed to describe annual trends in new NIHL claims, cost to ACC, and claimants' age, gender and occupational group. RESULTS: There is currently no reliable information regarding the overall incidence and prevalence of NIHL in New Zealand. ACC data reveals a substantial increase in the number of new NIHL claims annually, rising from 2823 in July 1995-June 1996, to 5580 in July 2005-June 2006. Together with ongoing claims the overall costs of NIHL claims increased by an average of 20% each year (a six-fold increase over the decade) resulting in a total cost to ACC of $193.82M over the review period. Collectively, agriculture and fisheries workers, trades workers, machine operators, and assemblers accounted for 53% of new claims. Most claims were lodged in middle age or later, with the vast majority of claimants (95%) being men. The relationship of age with the probability of making a claim changed significantly over the study period with rates in older age groups increasing faster than in younger. CONCLUSIONS: The substantial and increasing societal costs despite decades of NIHL control legislation suggests that current strategies addressing this problem are not effective, inadequately implemented, or both.

Family influences, acculturation, and the prevalence of tobacco smoking among Asian youth in New Zealand: findings from a national survey.

The associations among family factors, acculturation, and the risk of regular smoking among Asian youth were investigated in a nationally representative survey in New Zealand. The strong relationships between protective family factors and lower risks of smoking were not attenuated in the presence of indicators suggestive of acculturation.

Hand-held internet tablets for school-based data collection.

BACKGROUND: In the last 20 years, researchers have been using computer self-administered questionnaires to gather data on a wide range of adolescent health related behaviours. More recently, researchers collecting data in schools have started to use smaller hand-held computers for their ease of use and portability. The aim of this study is to describe a new technology with wi-fi enabled hand-held internet tablets and to compare adolescent preferences of laptop computers or hand-held internet tablets in administering a youth health and well-being questionnaire in a school setting. METHODS: A total of 177 students took part in a pilot study of a national youth health and wellbeing survey. Students were randomly assigned to internet tablets or laptops at the start of the survey and were changed to the alternate mode of administration about half-way through the questionnaire. Students at the end of the questionnaire were asked which of the two modes of administration (1) they preferred, (2) was easier to use, (3) was more private and confidential, and (4) was easier to answer truthfully. RESULTS: Many students expressed no preference between laptop computers or internet tablets. However, among the students who expressed a preference between laptop computers or internet tablets, the majority of students found the internet tablets more private and confidential (p < 0.001) and easier to answer questions truthfully (p < 0.001) compared to laptop computers. CONCLUSION: This study demonstrates that using wi-fi enabled hand-held internet tablets is a feasible methodology for school-based surveys especially when asking about sensitive information.