An analysis of stratagems to reduce drowning deaths of young children in private swimming pools and spas in Victoria, Australia

Challenges to young children's swimming lesson participation in New South Wales, Australia

BACKGROUND

Child swimming lessons are a key intervention for drowning prevention; however, participation has been severely affected by COVID-19 restrictions and cost-of-living challenges. To encourage re-engagement, the New South Wales government began providing A$100 swimming lesson vouchers. Parent/carers of eligible preschool-aged children were asked to complete a survey during voucher creation. This study aimed to examine pre-existing challenges to lesson participation among families who had not participated in the preceding 12 months.

METHODS

Cross-sectional data from parent/carer surveys completed between December 2021 and June 2022 were analysed. Binary logistic models analysed associations between sociodemographic factors and answered affirmatively to one or more challenges to participation from a predefined list.

RESULTS

Of 221 218 vouchers created, 79 553 parent/carers (36%) indicated that their child had not participated in swimming lessons in the last 12 months and responded to the question about participation challenges. Parent/carers of children with disabilities or residing in low socioeconomic areas had higher odds of indicating cost was a challenge while regional/remote families had over five times higher odds of indicating swim school availability difficulties. Families speaking a non-English language at home had over 2.5 times higher odds of thinking that their child was too young for swimming lessons, higher odds of thinking swimming lessons were not important and higher odds of indicating that COVID-19 had challenged participation.

CONCLUSION

These findings highlight how different population groups experience challenges to participation in swimming lessons. Alleviating costs and increasing lesson availability is important.

Hospital-admitted drowning in Victoria, Australia, before and after the emergence of the COVID-19 pandemic

OBJECTIVES

To examine trends in hospitalisation following drowning in Victoria, Australia, before and after the emergence of the COVID-19 pandemic.

DESIGN

Retrospective analysis of administrative hospital admission records.

SETTING

Hospital admissions recorded in the Victorian Admitted Episodes Dataset.

PARTICIPANTS

Hospital-admitted patients with ≥1 drowning-related International Statistical Classification of Diseases and Related Health Problems, Tenth Revision, Australian Modification diagnosis code.

MAIN OUTCOME MEASURES

Incidence and incidence rate ratios (IRR; 95% CIs) of hospital-admitted drowning that occurred before (July 2017 to June 2019), during (July 2019 to June 2021) and after (July 2021 to June 2022) the onset of the COVID-19 pandemic.

RESULTS

There were 736 hospital admissions related to drowning in the study period; the incidence was 2.6 per 100 000 population pre-COVID-19 and dropped to 2.0 per 100 000 during (2019/2020-2020/2021) and after (2021/2022) the onset of the pandemic. Among Victorian residents, drowning was positively associated with younger age, male sex and regional/remote residence. Drowning was negatively associated with the onset of COVID-19 (IRR 0.76 (0.64, 0.90)) as well as the post-COVID-19 period (0.78 (0.64, 0.97)), compared with pre-COVID-19. Natural water drowning rates were consistently higher than pool or bathtub drowning rates. Pool or bathtub drowning rates decreased with the onset of COVID-19; no significant change was observed in the natural water drowning rate.

CONCLUSIONS

Pool and bathtub drowning rates declined since the onset of the COVID-19 pandemic, despite more time spent at home, while natural water drowning rates remained consistently high. Hospital admissions provide a valuable data source for monitoring of drowning, which is crucial to ensure a targeted, evidence-based approach to mitigate drowning risk.

Grandmother presence improved grandchild survival against childhood infections but not vaccination coverage in historical Finns

Grandmother presence can improve the number and survival of their grandchildren, but what grandmothers protect against and how they achieve it remains poorly known. Before modern medical care, infections were leading causes of childhood mortality, alleviated from the nineteenth century onwards by vaccinations, among other things. Here, we combine two individual-based datasets on the genealogy, cause-specific mortality and vaccination status of eighteenth- and nineteenth-century Finns to investigate two questions. First, we tested whether there were cause-specific benefits of grandmother presence on grandchild survival from highly lethal infections (smallpox, measles, pulmonary and diarrhoeal infections) and/or accidents. We show that grandmothers decreased all-cause mortality, an effect which was mediated through smallpox, pulmonary and diarrhoeal infections, but not via measles or accidents. Second, since grandmothers have been suggested to increase vaccination coverage, we tested whether the grandmother effect on smallpox survival was mediated through increased or earlier vaccination, but we found no evidence for such effects. Our findings that the beneficial effects of grandmothers are in part driven by increased survival from some (but not all) childhood infections, and are not mediated via vaccination, have implications for public health, societal development and human life-history evolution.

Prevention of Drowning

Drowning is a leading cause of injury-related death in children. In 2018, almost 900 US children younger than 20 years died of drowning. A number of strategies are available to prevent these tragedies. As educators and advocates, pediatricians can play an important role in prevention of drowning.

Autism spectrum disorder and unintentional fatal drowning of children and adolescents in Australia: an epidemiological analysis

OBJECTIVES

This study explored unintentional fatal drowning among children and adolescents (0-19 years) diagnosed with autism spectrum disorder (ASD) in Australia.

DESIGN

This total population, cross-sectional audit used data from the Royal Life Saving National Fatal Drowning Database to explore demographic and causal factors in ASD drowning cases between 1 July 2002 and 30 June 2018. Rates and relative risk (RR) with a 95% confidence interval (CI) were calculated for drowning cases with and without ASD, using estimated population-level prevalence data.

RESULTS

Of the 667 cases of drowning among 0-19 year olds with known medical history, 27 children and adolescents (4.0%) who drowned had an ASD diagnosis. Children and adolescents with ASD were three times more likely to drown than those without ASD (RR=2.85; CI 0.61 to 13.24). Among those with ASD, 0-4 year olds record the highest rate (11.60/100 000 diagnosed). Children and adolescents with ASD were significantly more likely to drown when compared with those without ASD: if aged 5-9 years (44.4% of ASD-yes cases; 13.3% of ASD-no cases); in a lake or dam (25.9% vs 10.0%) and during winter (37.0% vs 13.1%).

CONCLUSION

Heightened awareness of drowning risk for children and adolescents with ASD is required, including adult supervision and barriers restricting water access. Further evaluation of the effectiveness of personal alarms to alert caregivers to an unsupervised child is warranted. Challenges exist regarding accurate estimates of population-level ASD prevalence and identification of ASD in coronial files. As the diagnosis of ASD does not often occur until age five, results may be an underestimate.

Aquatic Competencies and Drowning Prevention in Children 2–4 Years: A Systematic Review

Aquatic competencies have been proposed as a prevention strategy for children aged 2–4 years who are over-represented in drowning statistics. For this recommendation to be made, exploration of the connection between aquatic competencies and drowning is required. This review critically analyzed studies exploring aquatic competencies and their effect on drowning and/or injury severity in children 2–4 years. English language peer-reviewed literature up to 31 July 2019 was searched and the PRISMA process utilized. Data were extracted from twelve studies that fulfilled the inclusion criteria. Findings from this study included that aquatic competencies were not found to increase risk of drowning and demonstrated children aged 2–4 years are capable of developing age-appropriate aquatic competencies. Age-appropriate aquatic competencies extracted were propulsion/locomotion, flotation/buoyancy, water familiarization, submersion and water exits. The acquisition of these competencies holds benefit for the prevention of drowning. No evidence was found relating to injury severity. There was limited exploration of the relationship between aquatic competencies attainment and age-related developmental readiness. The review highlights the need for consistent measures of exposure, clarity around skills acquisition, better age-specific data (2 years vs. 3 years vs. 4 years), studies with larger sample sizes, further exploration of the dose–response relationship and consistent skill level testing across age groups. Further investigation is required to establish the efficacy of aquatic competencies as a drowning prevention intervention, as well as exploring the relationship between aquatic competencies and age-related developmental readiness. In conclusion, early evidence suggests aquatic competencies can help to reduce drowning.

Learning to Swim: An Exploration of Negative Prior Aquatic Experiences among Children

Learning to swim via a structured program is an important skill to develop aquatic competencies and prevent drowning. Fear of water can produce phobic behaviors counterproductive to the learning process. No research examines the influence of negative aquatic experiences on learning to swim. This study explored the influence of children’s negative prior aquatic experiences (NPAE) on learn-to-swim achievement via swim school data. Children’s enrolment records (5–12 years) in the Australian Capital Territory were analyzed via demographics, level achieved and NPAE. NPAE was recorded as yes/no, with free text thematically coded to 16 categories. Of 14,012 records analyzed (51% female; 64% aged 6–8 years), 535 (4%) reported a NPAE at enrolment. Males, children with a medical condition and attending public schools were significantly more likely (p = 0.001) to report a NPAE. Children reporting a NPAE achieved a lower average skill level at each year of age. The largest proportion (19%) of NPAE reported related to swimming lessons. NPAE have a detrimental influence on aquatic skill achievement. We recommend increased adult supervision to reduce likelihood of an NPAE occurring, while also encouraging swim instructors to consider NPAE when teaching swimming and develop procedures to ensure a NPAE does not occur during instruction.

Childhood Drowning: Review of Patients Presenting to the Emergency Departments of 2 Large Tertiary Care Pediatric Hospitals Near and Distant From the Sea Coast

OBJECTIVE

Drowning is a leading cause of death among infants and toddlers. Unique physiological and behavioral factors contribute to high mortality rates. Drowning incidents predominantly occur during warmer months and holidays. The aim of this study was to describe the characteristics of pediatric drowning victims who attended 2 different emergency departments (EDs), 1 near and 1 distant from the sea coast, to recognize risk factors, complications, causes of death, and the educational needs of families and caregivers.

METHODS

Retrospective cohort analysis of incident history, clinical presentation, treatments, and outcomes of drowning victims was performed. Data were analyzed both by age group and proximity of institution to the sea coast.

RESULTS

From 2005 to 2015, 70 drowning patients presented to the 2 institutions; there was no difference in incident history or outcomes based on proximity to the sea coast. Fifty-six percent of patients were younger than 6 years, the majority drowning in pools. More of the older children drowned in the sea (48% vs 23%). Half of all patients were treated and followed in the ED or ward, and the other half were treated in the pediatric intensive care unit; 12 suffered severe complications, including 5 diagnosed with brain death. Cardiopulmonary resuscitation was performed in 80% of the fatal group and 23% of the nonfatal group (P = 0.006). Seven children who experienced a cardiac arrest with hypothermia were treated before arrival in the ED, and 5 had ongoing cardiac arrest upon arrival in the ED (these were the 5 suffering brain death).

DISCUSSION

Most of patients younger than 6 years drowned in swimming pools, suggesting that parents are perhaps less vigilant in these circumstances, even though they may remain in close proximity. Active adult supervision entails attention, proximity, and continuity. Educational efforts should be aimed at reminding parents of this, especially in the summer months.

Causes of distraction leading to supervision lapses in cases of fatal drowning of children 0-4 years in Australia: A 15-year review

AIM

Supervision is a strategy for preventing drowning among children. However, supervision lapses continue to be a contributory factor in child drowning. This study aims to identify, describe and analyse the causes of distraction leading to lapses in supervision in child drowning.

METHODS

A total population survey of all fatal unintentional drownings among children aged 0-4 years between 1 July 2002 and 30 June 2017 was undertaken using data from the Australian National Coronial Information System. Among closed coronial cases, causes of distraction leading to lapses in supervision were collected as free text from closed case documentation and subsequently thematically grouped into categories. Univariate and χ² analysis was undertaken (P < 0.01).

RESULTS

A total of 447 children drowned during the study period (62.0% male; 66.9% aged 1-2 years; 53.3% swimming pools; 79.4% falls into water). Of the 426 (95.3%) closed cases, common supervision lapses were due to indoor household duties (27.6%), outdoor household duties (12.6%) and talking/socialising (11.9%).

CONCLUSIONS

This study has identified common scenarios for distractions leading to supervision lapses including the link between indoor household duties and bathtub drowning deaths and talking/socialising for deaths in swimming pools and at rivers. Challenges include medical issues impacting sole carers. The 7% of cases where a supervision lapse occurred due to miscommunication are opportunities to further reinforce the need for a designated supervisor, particularly with two or more adults present. Study findings on distraction causes, and strategies to minimise them, should be incorporated into national public awareness campaigns aimed at parents and care givers of this at-risk group.

The burden of unintentional drowning: global, regional and national estimates of mortality from the Global Burden of Disease 2017 Study

Background

Drowning is a leading cause of injury-related mortality globally. Unintentional drowning (International Classification of Diseases (ICD) 10 codes W65-74 and ICD9 E910) is one of the 30 mutually exclusive and collectively exhaustive causes of injury-related mortality in the Global Burden of Disease (GBD) study. This study’s objective is to describe unintentional drowning using GBD estimates from 1990 to 2017.

Methods

Unintentional drowning from GBD 2017 was estimated for cause-specific mortality and years of life lost (YLLs), age, sex, country, region, Socio-demographic Index (SDI) quintile, and trends from 1990 to 2017. GBD 2017 used standard GBD methods for estimating mortality from drowning.

Results

Globally, unintentional drowning mortality decreased by 44.5% between 1990 and 2017, from 531 956 (uncertainty interval (UI): 484 107 to 572 854) to 295 210 (284 493 to 306 187) deaths. Global age-standardised mortality rates decreased 57.4%, from 9.3 (8.5 to 10.0) in 1990 to 4.0 (3.8 to 4.1) per 100 000 per annum in 2017. Unintentional drowning-associated mortality was generally higher in children, males and in low-SDI to middle-SDI countries. China, India, Pakistan and Bangladesh accounted for 51.2% of all drowning deaths in 2017. Oceania was the region with the highest rate of age-standardised YLLs in 2017, with 45 434 (40 850 to 50 539) YLLs per 100 000 across both sexes.

Conclusions

There has been a decline in global drowning rates. This study shows that the decline was not consistent across countries. The results reinforce the need for continued and improved policy, prevention and research efforts, with a focus on low- and middle-income countries.

A Review of Nonfatal Drowning in the Pediatric-Age Group: A 10-Year Experience at a University Hospital in Saudi Arabia

OBJECTIVE

The aim of this study was to evaluate the nonfatal drowning experience, risk factors, intrahospital assessment and postincidental outcomes for children admitted to King Fahd Hospital of the University, AlKhobar, Saudi Arabia, over a 10-year period.

METHODS

Children up to the age of 14 years who were admitted with the diagnosis of nonfatal drowning from July 2005 to June 2015 were included. Data regarding demographics, timing, season and location of drowning, presence of an assigned lifeguard, duration of submersion and transport to hospital, cardiopulmonary resuscitation, initial Glasgow Coma Scale, temperature, pH, blood sugar level, total hospital stay, and discharge status were extrapolated, and their effects on the patient's outcome analyzed. Patients' outcomes were classified into either full recovery, moderate to severe neurological damage, or brain death.

RESULTS

Fifty-one subjects were included in the study; 66.7% were males, 57% were younger than 6 years, and 80% were Saudi citizens. Of the total cases, 94% recovered fully, and 6% were diagnosed as having brain death or discharged from the intensive care unit with severe neurological injury. Submersion time of more than 5 minutes, Glasgow Coma Scale of 4 or less, pH of less than 7.1, temperature of 35°C or less, and blood sugar of 180 mg/dL or greater were found to correlate with bad outcomes with great statistical significance.

CONCLUSIONS

The findings of this study were in line with results of most of the international and local studies on the subject. Significant defects have been concluded in prehospital medical care and cardiopulmonary resuscitation. Adequate swimming safety regulations, assignments of lifeguards, and parental education should be taken into consideration by media and involved authorities.

Epidemiology, Risk Factors and Measures for Preventing Drowning in Africa: A Systematic Review

Background and Objectives: Drowning is a leading cause of unintentional injury related mortality worldwide, and accounts for roughly 320,000 deaths yearly. Over 90% of these deaths occur in low- and middle-income countries with inadequate prevention measures. The highest rates of drowning are observed in Africa. The aim of this review is to describe the epidemiology of drowning and identify the risk factors and strategies for prevention of drowning in Africa. Materials and Methods: A review of multiple databases (MEDLINE, CINAHL, PsycINFO, Scopus and Emcare) was conducted from inception of the databases to the 1st of April 2019 to identify studies investigating drowning in Africa. The preferred reporting items for systematic review and meta-analysis (PRISMA) was utilised. Results: Forty-two articles from 15 countries were included. Twelve articles explored drowning, while in 30 articles, drowning was reported as part of a wider study. The data sources were coronial, central registry, hospital record, sea rescue and self-generated data. Measures used to describe drowning were proportions and rates. There was a huge variation in the proportion and incidence rate of drowning reported by the studies included in the review. The potential risk factors for drowning included young age, male gender, ethnicity, alcohol, access to bodies of water, age and carrying capacity of the boat, weather and summer season. No study evaluated prevention strategies, however, strategies proposed were education, increased supervision and community awareness. Conclusions: There is a need to address the high rate of drowning in Africa. Good epidemiological studies across all African countries are needed to describe the patterns of drowning and understand risk factors. Further research is needed to investigate the risk factors and to evaluate prevention strategies.

Drowning mortality in children aged 0-14 years in Victoria, Australia: detailed epidemiological study 2001-2016

BACKGROUND

Major reductions in child drowning mortality rates have been observed historically in Victoria, Australia, for the period 1863-2000. Despite this trend, drowning remains the leading cause of unintentional child death in Victoria. This study investigates the residual fatal drowning problem in the Victorian child population (0-14 years) for the period 2001-2016.

AIMS

Describe the epidemiology of child drowning deaths in the Victorian population in 2001-2016; investigate risk factors and direct antecedents to these deaths.

METHODS

Population-based retrospective case data were extracted from the National Coronial Information System for 16 years (January 2001-December 2016), and case-by-case analysis was conducted. Associated factors were determined using univariate and Poisson analyses.

RESULTS

88 of 97 cases had information available for analysis, pools were the most frequent location (30%); 70% of all cases occurred between 08:00 and 17:00; most victims were not deliberately in the body of the water (73%), for example, the pool. Supervision lapses included carers leaving the room when the child was in the bath (16/18), siblings left to supervise the child in private pools (7/23), inadequate pool fences (8/23) or faulty/open gates (4/23), or neighbours' pool spa (4/23). Delays in finding the child occurred when searches occurred elsewhere, before the body of water (21/88) and when carers were asleep (5/88). Fourteen of the 88 children had an intellectual disability or predisposing medical condition. The grouped Poisson analysis demonstrated that age 0-4 years, male gender and rural place of residence were significant. A downward trend in drowning rate continued in this period.

DISCUSSION AND CONCLUSIONS

A case-by-case analysis of a drowned population of children identified details of risk factors and antecedents not previously described. Missing data on antecedents were common, likely resulting in undercounting. Further enhancements to systematic data collection are needed. The results support a systems approach to drowning prevention.

The prevention of child drowning: the causal factors and social determinants impacting fatalities in portable pools

ISSUE ADDRESSED

There is a scarcity of research into portable pool drowning and its prevention. This total population study examines fatal drowning among children under five in portable pools in Australia.

METHODS

All child drowning deaths in portable pools for the period 1 July 2002 to 30 June 2018 were identified. A portable pool was defined as any structure used for swimming and wading which, when emptied, can be moved.

RESULTS

Twenty-three children (aged 0-17 years) drowned in portable pools. The drowning rate for children less than 5 years of age was 0.09 per 100 000 population. The peak age of death was 12-23 months (RR = 2.99; CI: 1.09-8.23), with the majority (n = 20 deaths) aged 16-31 months. Ninety per cent followed a fall into water. None were supervised. Children commonly resided in areas classified as socially and economically disadvantaged (85%; n = 17). Drowning rates in very remote areas were 15 times greater (RR = 15.41; CI: 0.03-7579.65) than city children. Eleven (55%) drowning deaths occurred in pools with a depth >300 mm, of which 10 (91%) were known to be unfenced.

CONCLUSIONS

Social determinants impact child drowning in portables pools, which can occur quickly and in just 150 mm of water. Active supervision and a regulation-compliant barrier are effective prevention stratagems, factors which were absent from the deaths in this study. SO WHAT?: Portable pool drowning disproportionately impacts those aged 16-31 months who reside in very remote areas and areas classified as having high socio-economic disadvantage. Education for these groups on fencing and supervision of children must be provided.

Exploring the burden of fatal drowning and data characteristics in three high income countries: Australia, Canada and New Zealand

BACKGROUND

Drowning is a leading and preventable cause of death that has suffered an attention deficit. Improving drowning data in countries would assist the understanding of the full extent and circumstances of drowning, to target interventions and evaluate their effectiveness. The World Health Organization identifies data collection as a key strategy underpinning effective interventions. This study compares unintentional fatal drowning data collection, management and comparison using the databases of Australia, Canada and New Zealand.

METHODS

Cases of fatal unintentional drowning between 1-January-2005 and 31-December-2014 were extracted. Cases were combined into a single dataset and univariate and chi square analysis (p < 0.01) were undertaken. Location and activity variables were mapped and combined. Variables consistently collected across the three countries were compared to the ILCOR Drowning Data Guideline. The authors also recommend variables for a minimum core dataset.

RESULTS

Of 55 total variables, 19 were consistent and 13 could be compared across the three databases. When mapped against the ILCOR Drowning Data Guideline, six variables were consistently collected by all countries, with five compared within this study. The authors recommend a minimum core dataset of 11 variables including age, sex, location, activity, date of incident, and alcohol and drug involvement). There were 8176 drowning deaths (Australia 34.1%, Canada 55.9%, New Zealand 9.9%). All countries achieved reductions in crude drowning rates (Australia - 10.2%, Canada - 20.4%, New Zealand - 24.7%). Location and activity prior to drowning differed significantly across the three countries. Beaches (X² = 1151.0;p < 0.001) and ocean/harbour locations (X² = 300.5;p < 0.001) were common in Australia and New Zealand, while lakes/ponds (X² = 826.5;p < 0.001) and bathtubs (X² = 27.7;p < 0.001) were common drowning locations in Canada. Boating prior to drowning was common in Canada (X² = 66.3;p < 0.001).

CONCLUSIONS

The comparison of data across the three countries was complex. Work was required to merge categories within the 20% of variables collected that were comparable, thus reducing the fidelity of data available. Data sources, collection and coding varied by country, with the widest diversity seen in location and activity variables. This study highlights the need for universally agreed and consistently applied categories and definitions to allow for global comparisons and proposes a core minimum dataset.

Who rescues who? Understanding aquatic rescues in Australia using coronial data and a survey

OBJECTIVE

To examine fatal drowning associated with aquatic rescues and prior self-reported experience of undertaking an aquatic rescue in Australia.

METHODS

Previous aquatic rescue experience was sourced through the 2013 Queensland Computer Assisted Telephone Instrument Survey and compared to data on rescue-related fatal unintentional drowning between 1 January 2006 and 31 December 2015.

RESULTS

Twenty-three per cent (n=294/1291) of survey respondents had previously performed an aquatic rescue. Males (X² =35.2; p<0.001) were more likely to have performed a rescue; commonly at a beach/ocean/harbour location (X² =13.5; p<0.001). Females were more likely to have rescued a child (0-4 years of age) (X² =29.2; p<0.001) from a swimming pool (X² =34.3; p<0.001). Fifty-one people drowned while performing an aquatic rescue (Males=82.4%; 25-44 years of age=53.0%; beaches=54.9%).

CONCLUSIONS

Drownings are prevented by bystanders; this is not without risk to the rescuer. Most people perform only one rescue in their life, often at a younger age, on an altruistic basis, of family members or young children. Community-wide rescue skills, taught at a young age, with consideration for coastal, inland and swimming pool environments, may prevent drowning. Implications for public health: There is a need to train people early in their life on how to undertake a safe rescue and provide resuscitation, including promoting regular updates, in particular if supervising children.

Developing drowning prevention strategies for rivers through the use of a modified Delphi process

Introduction

Internationally, rivers are a leading drowning location, yet little evidence exists evaluating river drowning prevention strategies. This study aims to use expert opinion to identify strategies more likely to be effective.

Methods

Using a modified Delphi process, a virtual panel of 30 experts from 12 countries considered, grouped and prioritised strategies for river drowning prevention. Proposed strategies were assessed against known evidence and suitability in high-income countries (HICs) as well as low-income and middle-income countries (LMICs) using expert opinion. The final phase consolidated a list of strategies whose effectiveness was assessed against 10 evidence-based river drowning scenarios.

Results

An initial list of 424 prevention strategies was refined to 22. After being assessed against the 10 scenarios, a final list of 13 strategies was derived. Strategies addressed alcohol consumption around rivers, flood mitigation, improving child supervision, learning to swim, increased lifejacket wear and achieving community-wide resuscitation skills.

Discussion

While all 13 strategies were assessed as being effective in both LMICs and HICs by at least 60% of the respondents, further work is required to define river drowning at a country level and therefore allow for effective solutions to be developed, particularly in LMICs. No strategy will be effective in isolation and must be implemented alongside policy and behaviour change, public awareness and education. Evaluation should be incorporated as part of any future implementation of strategies.

Conclusion

This Delphi process identified 13 drowning prevention strategies for rivers. Further research is required to validate the efficacy of these findings through implementation and evaluation.

The Influence of Alcohol and Drugs on Drowning among Victims of Senior Years

Unintentional fatal drowning among older people is an issue as lifespans lengthen and older people embrace active retirement. While pre-existing medical conditions are a known risk factor for drowning among this age group, less is known about the role of alcohol and drugs. This 15-year (1 July 2002 to 30 June 2017) Australian study used coronial data to investigate the impact on older people (aged 65 years and older) of the obtundent effects of prescribed drugs which had been ingested by those with a positive blood alcohol concentration (BAC). Of the closed coronial cases with toxicological information (N = 471), one quarter (24.6%; N = 116) had consumed alcohol prior to drowning (one in seven BAC ≥ 0.05%), of which a third also had obtundent drugs present (33.6%; N = 39). Rivers/creeks/streams and swimming pools were the locations with the highest number of drowning deaths. Bathtubs (36.8%) and rivers/creeks/streams (17.9%) recorded the highest proportion of cases with victims having a BAC ≥ 0.05%. Bathtubs (13.2%), lakes (7.0%), and rivers/creeks/streams (6.8%) recorded the highest proportion of drowning cases with obtundent drug involvement. Obtundent drug involvement was significantly more likely for activities where the person who drowned was alone (i.e., unknown activity) (X2 = 6.8; p = 0.009). Common obtundent drugs included Diazepam, Tempazepam, and Codeine. Advocacy to prevent drowning in older people is a complex challenge, due to the myriad of locations where drowning occurs, the consumption of alcohol, and polypharmacy required for treating illness and maintaining good health.

Understanding the full burden of drowning: a retrospective, cross-sectional analysis of fatal and non-fatal drowning in Australia

OBJECTIVES

The epidemiology of fatal drowning is increasingly understood. By contrast, there is relatively little population-level research on non-fatal drowning. This study compares data on fatal and non-fatal drowning in Australia, identifying differences in outcomes to guide identification of the best practice in minimising the lethality of exposure to drowning.

DESIGN

A subset of data on fatal unintentional drowning from the Royal Life Saving National Fatal Drowning Database was compared on a like-for-like basis to data on hospital separations sourced from the Australian Institute of Health and Welfare's National Hospital Morbidity Database for the 13-year period 1 July 2002 to 30 June 2015. A restrictive definition was applied to the fatal drowning data to estimate the effect of the more narrow inclusion criteria for the non-fatal data (International Classification of Diseases (ICD) codes W65-74 and first reported cause only). Incidence and ratios of fatal to non-fatal drowning with univariate and Χ² analysis are reported and used to calculate case-fatality rates.

SETTING

Australia, 1 July 2002 to 30 June 2015.

PARTICIPANTS

Unintentional fatal drowning cases and cases of non-fatal drowning resulting in hospital separation.

RESULTS

2272 fatalities and 6158 hospital separations occurred during the study period, a ratio of 1:2.71. Children 0-4 years (1:7.63) and swimming pools (1:4.35) recorded high fatal to non-fatal ratios, whereas drownings among people aged 65-74 years (1:0.92), 75+ years (1:0.87) and incidents in natural waterways (1:0.94) were more likely to be fatal.

CONCLUSIONS

This study highlights the extent of the drowning burden when non-fatal incidents are considered, although coding limitations remain. Documenting the full burden of drowning is vital to ensuring that the issue is fully understood and its prevention adequately resourced. Further research examining the severity of non-fatal drowning cases requiring hospitalisation and tracking outcomes of those discharged will provide a more complete picture.

Applying a developmental lens to examine injury mortality in young people in Australia, 2001-2013

ISSUE ADDRESSED

As injuries are preventable, understanding the age profile of specific injury mechanisms is critical for developing injury prevention strategies. This study examined the profile and temporal trends of injury mortality of young people aged ≤24 years in Australia across developmental life stages.

METHOD

A retrospective analysis of injury deaths of young people aged ≤24 years was conducted using closed cases from the National Coronial Information System during 2001-2013. Negative binomial regression was used to examine temporal trends in mortality rates by age group.

RESULTS

There were 7749 injury deaths of young people in Australia. The mortality rates were estimated to decline each year for young people aged 0-4 years (by 3.4%; 95% CI: -5.10 to -1.67), 10-14 years (by 3.7%; 95% CI: -6.29 to -1.09), 15-19 years (by 4.4%; 95% CI: -5.90 to -2.85) and 20-24 years (by 4.5%; 95% CI: -5.61 to -3.37). Motor vehicle incidents were a frequent mechanism of fatal injury for all ages. For children aged ≤9 years, drowning and submersion and other threats to breathing were also frequent mechanisms of fatal injury. Young people aged 15-24 years were also frequently fatally injured as a motorcyclist or a pedestrian.

CONCLUSIONS

The age-specific injury mortality profiles reflect the changing vulnerabilities of young people influenced by physical, cognitive and social characteristics associated with different stages of their development. By focusing on different ages, targeted injury prevention interventions can be developed. SO WHAT?: While policies play a key role in reducing injury mortality, secondary interventions that aim to shift attitudes to injury prevention activities will also be critical to influence positive behaviour change.

Development, Implementation and Evaluation of an Educational Intervention to Prevent Low Speed Vehicle Run-Over Events: Lessons Learned

There is a growing body of literature regarding low speed vehicle runover (LSVRO) events among children. To date, no literature exists on evaluation of interventions to address this serious childhood injury. Knowledge, attitudes, and behaviour regarding LSVROs were assessed via survey at a shopping centre (pre-intervention), then five months later (post-intervention), to investigate the effect of a population level educational intervention in Queensland, Australia. Participants’ knowledge regarding frequency of LSVRO events was poor. No participant demonstrated ‘adequate behaviour’ in relation to four safe driveway behaviours pre-intervention; this increased at post-intervention (p < 0.05). Most of the sample perceived other’s driveway behaviour as inadequate, and this reduced significantly (<0.05). Perceived effectiveness of LSVRO prevention strategies increased from pre- to post-intervention, but not significantly. TV was the greatest source of knowledge regarding LSVROs pre- and post-intervention. This study provides some evidence that the educational campaign and opportunistic media engagement were successful in increasing awareness and improving behaviour regarding LSVROs. While there are several limitations to this study, our experience reflects the ‘real-world’ challenges associated with implementing prevention strategies. We suggest a multi-faceted approach involving media (including social media), legislative changes, subsidies (for reversing cameras), and education to prevent LSVROs.

Improving Pool Fencing Legislation in Queensland, Australia: Attitudes and Impact on Child Drowning Fatalities

Four-sided, non-climbable pool fencing is an effective strategy for preventing children from drowning in home swimming pools. In 2009, the Queensland Government introduced legislation to improve the effectiveness of pool fencing. This study explores community attitudes towards the effectiveness of these legislative changes and examines child (<5 years) drowning deaths in pools. Data from the 2011 Queensland Computer-Assisted Telephone Interviewing (CATI) Social Survey include results from questions related to pool ownership and pool fencing legislation. Fatal child drowning cases between 1 January 2005 and 31 December 2015 were sourced from coronial data. Of the 1263 respondents, 26/100 households had a pool. A total of 58% believed tightening legislation would be effective in reducing child drowning deaths. Pool owners were more likely to doubt the effectiveness of legislation (p < 0.001) when compared to non-pool owners. Perceptions of effectiveness did not differ by presence of children under the age of five. There were 46 children who drowned in Queensland home pools (7.8/100,000 pools with children residing in the residence/annum) between 2005 and 2015. While pool owners were less likely to think that tightening the legislation would be effective, the number of children drowning in home swimming pools declined over the study period. Drowning prevention agencies have more work to do to ensure that the most vulnerable (young children in houses with swimming pools) are protected.

Drowning fatalities in childhood: the role of pre-existing medical conditions

OBJECTIVES

This study is an analysis of the contribution of pre-existing medical conditions to unintentional fatal child (0-14 years) drowning and a of critique prevention stratagems, with an exploration of issues of equity in recreation.

DESIGN

This study is a total population, cross-sectional audit of all demographic, forensic and on-site situational details surrounding unintentional fatal drowning of children 0-14 years in Australia for the period of 1 July 2002 to 30 June 2012. Data were sourced from the National (Australia) Coronial Information System. Age-specific disease patterns in the general population were obtained from the Australian Institute of Health and Welfare.

RESULTS

Four hundred and sixty-eight children drowned during the study period. Fifty-three (11.3%) had a pre-existing medical condition, of whom 19 suffered from epilepsy, 13 from autism and 5 with non-specific intellectual disabilities. Epilepsy is a risk factor in childhood drowning deaths, with a prevalence of 4.1% of drowning fatalities, compared with 0.7%-1.7% among the general 0-14 years population (relative risk: 2.4-5.8). Epilepsy was deemed to be contributory in 16 of 19 cases (84.2% of epilepsy cases) with a median age of 8 years. Asthma and intellectual disabilities were under-represented in the drowning cohort.

CONCLUSION

Except for epilepsy, this research has indicated that the risks of drowning while undertaking aquatic activities are not increased in children with pre-existing medical conditions. Children with pre-existing medical conditions can enjoy aquatic activities when appropriately supervised.

Epidemiology, risk factors and strategies for the prevention of global unintentional fatal drowning in people aged 50 years and older: a systematic review

PURPOSE

Drowning is a global public health issue and prevention poses an ongoing challenge for all countries. Many nations are experiencing ageing populations, and little is known about the epidemiology, risk factors and prevention of drowning deaths among older people. This paper reports on a systematic review of literature published on drowning among older people.

METHODS

A systematic literature review was undertaken using English-language, Portuguese-language and Spanish-language papers published between 1980 and 2015. The review explores gaps in the literature with a focus on the epidemiology, risk factors and strategies for the prevention of unintentional fatal drowning among people 50 years and over.

RESULTS

Thirty-eight papers were deemed relevant to the study design, including 18 (47%) on epidemiology, 19 (50%) on risk factors and 9 (24%) on strategies for prevention. Risk factors identified included male gender, ethnicity, rurality and increasing age. Prevention strategies commonly proposed were education and wearing life jackets. Gaps identified in the published literature include a lack of consistency around age groupings used for epidemiological studies; a lack of consensus on risk factors; a lack of total population, country-level analysis; and the need for older age-specific prevention strategies that have been implemented and their effectiveness evaluated.

CONCLUSION

This review identified drowning deaths among older people as a global issue. Further work is required to reduce drowning in this cohort. High-quality epidemiological studies identifying risk factors using standardised age groupings to allow for international comparisons are required, as are implementation and evaluation of older age-specific prevention strategies.

Infant and toddler drowning in Australia: Patterns, risk factors and prevention recommendations

Drowning is a leading cause of death among infants and toddlers. Unique physiological and behavioural factors contribute to high mortality rates. Drowning incidents predominantly occur during warmer months and holidays. Recent studies link high socio-economic status and drowning, in contrast to earlier studies. Cardiac arrhythmias, epilepsy and autism are strong risk factors for drowning incidents. Prevention strategies have substantially lowered drowning rates. While legislation-compliant pool fencing substantially reduces drowning risk, compliance levels are low, and penalties are minor. Active supervision education for parents and carers is an effective drowning prevention strategy. Bystanders provide basic life support in only 30% of cases; strategies to increase training uptake are needed. Fencing costs should be a mandatory inclusion for pool installations, with high penalties for non-compliance. Basic life support training should be compulsory for pool owners, and tax incentives should be used as a lever to increase training uptake.

The Hidden Tragedy of Rivers: A Decade of Unintentional Fatal Drowning in Australia

OBJECTIVE(S)

Describe unintentional drowning deaths in rivers, creeks and streams (rivers) in Australia and identify risk factors to inform prevention.

DESIGN & SETTING

This study is a cross-sectional, total population audit of all unintentional fatal drownings in Australian rivers between 1-July-2002 and 30-June-2012 using Australian coronial data. A modified Bonferroni test has been applied, deeming statistical significance p<0.03 and p<0.04 respectively.

RESULTS

Rivers (n = 770; 26.6%) were the leading location among the 2,892 people who died from unintentional fatal drowning. This is a rate of 0.37/100,000 people / annum. Within river drowning deaths common groups include; males (80.4%), adults (85.3%), adults who have consumed alcohol (25.5%), people who fell in (21.3%), people involved in non-aquatic transport incidents (18.2%) and locals (74.0%). Children were 1.75 times more likely than adults (p<0.04) to drown in rivers as a result of a fall and adults 1.50 times more likely to drown in rivers as a result of watercraft incidents when compared to children. When compared to males, females were 2.27 and 4.45 times respectively more likely to drown in rivers as a result of incidents involving non-aquatic transport (p<0.04) and being swept away by floodwaters (p<0.04). Males were 2.66 and 4.27 times respectively more likely to drown in rivers as a result of watercraft incidents (p<0.04) and as a result of jumping in (p<0.04) when compared to females.

CONCLUSION(S)

While rivers are the leading location for drowning in Australia, little is understood about the risks. This study has identified key groups (males, adults, locals) and activities. While males were more likely to drown, the risk profile for females differed.

Fatal river drowning: the identification of research gaps through a systematic literature review

INTRODUCTION

Drowning is a leading cause of unintentional death. Rivers are a common location for drowning. Unlike other location-specific prevention efforts (home swimming pools and beaches), little is known about prevention targeting river drowning deaths.

METHODS

A systematic literature review was undertaken using English language papers published between 1980 and 2014, exploring gaps in the literature, with a focus on epidemiology, risk factors and prevention strategies for river drowning.

RESULTS

Twenty-nine papers were deemed relevant to the study design including 21 (72.4%) on epidemiology, 18 (62.1%) on risk factors and 10 (34.5%) that proposed strategies for prevention. Risk factors identified included age, falls into water, swimming, using watercraft, sex and alcohol.

DISCUSSION

Gaps were identified in the published literature. These included a lack of an agreed definition for rivers, rates for fatal river drowning (however, crude rates were calculated for 12 papers, ranging from 0.20 to 1.89 per 100 000 people per annum), and consensus around risk factors, especially age. There was only one paper that explored a prevention programme; the remaining nine outlined proposed prevention activities. There is a need for studies into exposure patterns for rivers and an agreed definition (with consistent coding).

CONCLUSIONS

This systematic review has identified that river drowning deaths are an issue in many regions and countries around the world. Further work to address gaps in the published research to date would benefit prevention efforts.

Unintentional, non-fatal drowning of children: US trends and racial/ethnic disparities

OBJECTIVE

The current study aimed to better understand trends and risk factors associated with non-fatal drowning of infants and children in the USA using two large, national databases.

METHODS

A secondary data analysis was conducted using the National Inpatient Sample and the Nationwide Emergency Department Sample databases. The analytic sample (n=19,403) included children <21 years of age who had a diagnosis code for near-drowning/non-fatal drowning. Descriptive, χ(2) and analysis of variance techniques were applied, and incidence rates were calculated per 100,000 population.

RESULTS

Non-fatal drowning incidence has remained relatively stable from 2006 to 2011. In general, the highest rates of non-fatal drowning occurred in swimming pools and in children from racial/ethnic minorities. However, when compared with non-Hispanic Caucasian children, children from racial/ethnic minorities were more likely to drown in natural waterways than in swimming pools. Despite the overall lower rate of non-fatal drowning among non-Hispanic Caucasian children, the highest rate of all non-fatal drowning was for non-Hispanic Caucasian children aged 0-4 years in swimming pools. Children who were admitted to inpatient facilities were younger, male and came from families with lower incomes.

CONCLUSIONS

Data from two large US national databases show lack of progress in preventing and reducing non-fatal drowning admissions from 2006 to 2011. Discrepancies are seen in the location of drowning events and demographic characteristics. New policies and interventions are needed, and tailoring approaches by age and race/ethnicity may improve their effectiveness.

Drowning in Aboriginal and Torres Strait Islander children and adolescents in Queensland (Australia)

Background

Aboriginal and Torres Strait Islander (Indigenous) children are at greater risk of drowning than other children, however little is known about drowning of Indigenous children. This study identifies the previously unpublished incidence and characteristics of fatal and non-fatal drowning in Indigenous children and adolescents.

Methods

Retrospective data (Jan 2002-Dec 2008) on fatal and non-fatal drowning events among Indigenous and Non-Indigenous Queensland residents aged 0-19 years were obtained from multiple sources across the continuum of care (pre-hospital; emergency department; admitted patients; fatality) and manually linked. Crude incidence rates for fatal and non-fatal events were calculated using population data from the Australian Bureau of Statistics.

Results

There were 87 (6.7 % of all events) fatal and non-fatal (combined) Indigenous drowning events yielding a crude Incidence Rate of 16.8/100,000/annum. This is 44 % higher than the incidence rate for Non-Indigenous children. For every fatality, nine others were rescued and sought medical treatment (average 12 per year). There were no significant changes in Indigenous drowning incidents over the study period. Drowning rates were higher for Indigenous females than males. Overall incidence was higher among Indigenous children and adolescents than Non-Indigenous children for every calendar year and age-group (0-4 years; 5-9 years; 10-14 years) except those aged 15-19 years where no drowning events were recorded for males.

Location of drowning sites was similar in both populations 0-19 years, however there were slight differences in frequency at each of the locations. The three leading drowning locations for Indigenous 0-19 years olds were pool (48 %), bath (21 %) and natural water (16 %), and for non-Indigenous 0-19 years the leading locations were pool (66 %), natural water (13 %) and bath (12 %) (p < .01). Except for pool drowning, Indigenous drowning occurred more often in geographic areas of relative disadvantage. Among Indigenous children drowning location varied with age (p < .001). Most frequent locations by age were: <1 year bath (71 %); 1-4 years pools (80 %); 5-9 years pools (75 %) and 10-19 years beach/ocean (36 %). Severity of event differed statistically with Indigenous status and by remoteness with all fatal drowning events occurring in Regional or Remote areas, and none in Major Cities.

Conclusions

For every fatal drowning among Indigenous children in Queensland aged 0-19 years there are nine non-fatal events. This previously unreported survival ratio of 9:1 indicates the non-fatal injury burden in Indigenous children aged 0-19 years. Although higher Indigenous drowning rates prevailed, no significant changes over time are concerning. Equally the apparent over-representation of Indigenous adolescent females should be weighed against the absence of drowning among Indigenous male adolescents in the same age group in consecutive years of the study. Further investigation around behaviour and culture may highlight protective factors. Culturally specific prevention strategies which take into account social and demographic indicators identified in this study should be delivered to carers and peers of vulnerable age groups who frequent specific locations. Females, swimming ability, supervision and the young are areas which need to be incorporated into Indigenous-specific interventions for drowning prevention.