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

Disparities in unintentional drowning fatalities in Texas, USA, 1999-2020

BACKGROUND

Drowning is the third-leading cause of unintentional injury death worldwide. Although the USA as a whole bears a heavy burden, with approximately 4000 drowning fatalities annually, Texas stands out as a high-risk state for drowning due to its large population, suitable climate for year-round aquatic activities and availability of water-related recreational opportunities.

METHODS

Using mortality data from the Centers for Disease Control and Prevention Wide-ranging ONline Data for Epidemiologic Research online database, this retrospective, cross-sectional study overviews the magnitude and patterns of fatal unintentional drownings among Texans from 1999 to 2020.

RESULTS

Over the 22-year period, 7737 Texans died from unintentional drowning. An average of 352 drowning deaths occurred annually, with a rate of 1.4 deaths per 100 000 population. The highest proportion of unintentional drownings occurred in natural water settings (eg, lakes, ponds or rivers), accounting for 40% of fatal drownings. Children aged 1-4 years had the highest drowning death rate compared with all other age groups. Male Texans had a drowning death rate three times higher than that of female Texans. Black Texans had a higher drowning death rate than White Texans and Asian or Pacific Islander Texans.

CONCLUSIONS

Drowning remains a significant public health issue in Texas. Data on high-risk groups and settings should be used to strengthen drowning prevention efforts and policy initiatives and encourage more research to address the multifaceted factors contributing to drowning.

Child drowning mortality in Israel: Trends and measures for prevention

INTRODUCTION

In this study, we use the media-based database of Beterem-Safe Kids Israel, to provide a 15-year review of unintentional fatal childhood drowning in Israel, between 2008 and 2022.

METHOD

It total, we identified 257 cases of child mortality due to drowning during this period.

RESULTS

Our results demonstrate a gradual rise in childhood mortality due to drowning, from 72 cases in 2008-2012, to 85 cases in 2013-2017, and to 100 cases in 2018-2022. Especially worth noting is the increase in childhood drowning in domestic swimming pools. We point to a link between low socioeconomic status and cases of drowning, showing that the risk of drowning extends beyond a mere matter of caregiver inattention. We recommend a series of regulatory and legislative steps to reduce fatal childhood drowning, including fencing built around domestic swimming pools, extending lifeguard activity hours, adding declared beaches, forming programs of safe behavior in water environments for adolescents, and establishing swimming lessons during the 2nd grade, for all populations. We further recommend that a special focus will be put in municipalities situated at the bottom of the socioeconomic index.

Joint effects of heat-humidity compound events on drowning mortality in Southern China

BACKGROUND

Several previous studies have examined the association of ambient temperature with drowning. However, no study has investigated the effects of heat-humidity compound events on drowning mortality.

METHODS

The drowning mortality data and meteorological data during the five hottest months (May to September) were collected from 46 cities in Southern China (2013-2018 in Guangdong, Hunan and Zhejiang provinces). Distributed lag non-linear model was first conducted to examine the association between heat-humidity compound events and drowning mortality at city level. Then, meta-analysis was employed to pool the city-specific exposure-response associations. Finally, we analysed the additive interaction of heat and humidity on drowning mortality.

RESULTS

Compared with wet-non-hot days, dry-hot days had greater effects (excess rate (ER)=32.34%, 95% CI: 24.64 to 40.50) on drowning mortality than wet-hot days (ER=14.38%, 95%CI: 6.80 to 22.50). During dry-hot days, males (ER=42.40%, 95% CI: 31.92 to 53.72), adolescents aged 0-14 years (ER=45.00%, 95% CI: 21.98 to 72.35) and urban city (ER=36.91%, 95% CI: 23.87 to 51.32) showed higher drowning mortality risk than their counterparts. For wet-hot days, males, adolescents and urban city had higher ERs than their counterparts. Attributable fraction (AF) of drowning attributed to dry-hot days was 23.83% (95% CI: 21.67 to 26.99) which was significantly higher than that for wet-hot days (11.32%, 95% CI: 9.64 to 13.48%). We also observed that high temperature and low humidity had an additive interaction on drowning mortality.

CONCLUSION

We found that dry-hot days had greater drowning mortality risk and burden than wet-hot days, and high temperature and low humidity might have synergy on drowning mortality.

Temporal trends, clinical characteristics, and sociodemographic profile of post-neonatally acquired cerebral palsy in Australia, 1973-2012: A population-based observational study

AIM

To describe post-neonatally acquired (PNN) cerebral palsy (CP) in terms of temporal trends in prevalence, clinical and sociodemographic profiles, known causes and associations between causes, and sociodemographic variables.

METHOD

Numerator data, a count of children with PNN-CP confirmed at 5 years of age (n = 523), was drawn from two Australian state CP registers (birth years 1973-2012). Poisson regression was used to investigate temporal trends in the prevalence of PNN-CP by 5-year intervals, calculated per 10 000 live births. Using data from all state and territory Australian CP registers (n = 469), distributions of clinical characteristics, PNN-CP causes, and sociodemographic factors were tabulated (birth years 1995-2012). χ2 and logistic regression analyses were used to assess associations between sociodemographic profile, Australian reference data, and known causes.

RESULTS

A significant temporal decline in PNN-CP in Victoria (p = 0.047) and Western Australia (p = 0.033) was observed. The most common proximal causes of PNN-CP were cerebrovascular accidents (34%, n = 158), infection (25%, n = 117), and non-accidental injuries (12%, n = 58). Children born to teenage mothers, Aboriginal and/or Torres Strait Islander mothers, or children born in remote areas were over-represented in this cohort compared with reference data (all p ≤ 0.001). Infectious causes were strongly associated with teenage motherhood (odds ratio 3.0 [95% confidence interval 1.1-8.2], p = 0.028) and remote living (odds ratio 4.5 [95% confidence interval 2.0-10.2], p < 0.001).

INTERPRETATION

Although prevalence of PNN-CP has declined, the over-representation of priority populations, and the relative severity of a condition that is largely preventable, suggest the need for more specific primary preventive measures and support.

WHAT THIS PAPER ADDS

Prevalence of post-neonatally acquired (PNN) cerebral palsy (CP) in Australia significantly declined between 1973 and 2012. Cerebrovascular accidents are the most common proximal cause of PNN-CP. Children born in remote areas are at greater risk of PNN-CP.

Preliminary evaluation of the impact of mandatory life jacket laws at declared high-risk rock platforms on unintentional rock fishing drowning deaths

Objectives

To explore the impact of mandatory lifejacket wear legislation on unintentional rock fishing-related drowning fatalities at declared high-risk rock platforms in New South Wales (NSW; Australia).

Methods

Rock fishing-related drownings for the five years pre-legislation enactment (23 November 2011 to 22 November 2016) and five years post-legislation enactment (23 November 2016 to 22 November 2021) were compared. Google Earth was used to assess if drowning deaths occurred at declared areas under legislation. Binary logistic regression was used to analyse change in the number of deaths in declared areas pre-legislation/post-legislation.

Results

Over the 10 years, 80 rock fishing drowning deaths occurred in New South Wales; 23 in declared areas pre-legislation and 13 post-legislation (−43.5%). The odds of a rock fishing drowning death occurring in a declared area pre-legislation was 2.3 times higher (95% CI 0.942 to 5.752; p=0.067).

Conclusion

Reductions in rock fishing deaths at declared areas were observed since the legislation’s introduction, but were not significant. Greater enforcement and extension to other high-risk platforms may reduce deaths further.

Infant Drowning Prevention: Insights from a New Ecological Psychology Approach

Drowning causes significant mortality and morbidity globally, and infants (0-4 years of age) are disproportionately impacted. In a groundbreaking approach to pediatric drowning prevention, ecological psychology has been used to investigate the relationship between infants' perceptual-motor development and their behavior around bodies of water. In this review, we summarize recent research findings in the field of ecological psychology and apply these to the prevention of infant drowning. Studies have linked infants' avoidance of falls into the water with locomotor experience and type of accessway into bodies of water. Through crawling experience, infants learn to perceive the risk of falling into water and start adapting their behavior to avoid drop-offs leading into water. Infants tend to enter deep water more when the access is via a slope than via a drop-off. We propose that ecological psychology can enhance infant drowning prevention interventions. The aim is to create an additional layer of protection, the perceptual information layer, in addition to existing strategies, such as supervision and barriers. This new protective layer can be a powerful tool to further highlight the risk of entering the water and reduce infant drowning-related mortality and morbidity.

Quantifying fatal and non-fatal drowning in children under five in Aotearoa, New Zealand

OBJECTIVE

To quantify unintentional drowning trends and risk factors for children under five years of age in Aotearoa, New Zealand.

METHODS

A population-based analyses of fatal and non-fatal (hospitalisations and Accident Compensation Corporation [ACC] claims) unintentional drowning of children 0-4 years of age between 2005 and 2019 was conducted using DrownBase™ data. Analyses comprises calculation of linear temporal trends, crude drowning rates per 100,000 and relative risk (95% confidence interval) and ratios of fatal to non-fatal drowning.

RESULTS

557 incidents (16.0% fatal) were recorded. Fatalities declined (y=-0.0769x+2.5678;R2=0.01509), while hospitalisations increased (y=0.1418x+9.1093;R2=0.0979). Males were overrepresented. One year-olds recorded the highest rates (fatal=4.39/100,000) and (non-fatal=2.14/100,000). 'Other' ethnicity (8.77/100,000) and Māori (2.49/100,000) children recorded the highest fatal drowning rates. Home pools were the leading fatal location, while domestic environments attracted the highest hospitalisation rate. For every one fatal drowning there were 6.9 hospitalisations and 74.7 ACC claims.

CONCLUSIONS

Drowning among young children represents a preventable cause of injury-related harm. While fatalities are declining, non-fatal drowning is increasing. Implications for public health: Strategies to prevent drowning among young children are well understood, particularly restricting water access and active adult supervision. Further investment in effective prevention strategies for young children will deliver significant social, economic and health system savings.

Epidemiology of paediatric drowning hospitalisations in the USA: a population-based study

BACKGROUND

Drowning is a leading cause of death in children ≤5 years old. Detailed data on the epidemiology of drowning in this high-risk population can inform preventative efforts. We aimed to study trends in incidence and case fatality rates (CFR) in the USA among young children hospitalised after drowning.

METHODS

Children ≤5 years old hospitalised in the USA after drowning were identified from the Kids Inpatient Database 2000-2016. Incidence and CFRs by calendar year, age, sex, race/ethnicity and hospital region were calculated. Trends over time were evaluated. Factors associated with fatal drowning were assessed.

RESULTS

Among 30 560 804 hospitalised children ≤5 years old, 9261 drowning cases were included. Patients were more commonly male (62.3%) and white (47.4%). Two years old had the highest incidence of hospitalisation after drowning, regardless of race/ethnicity, sex and region. Overall drowning hospitalisations decreased by 49% from 2000 to 2016 (8.38-4.25 cases per 100 000 children). The mortality rate was 11.4% (n=1060), and most occurred in children ≤3 years old (83.0%). Overall case fatality decreased between 2000 and 2016 (risk ratio (RR) 0.44, 95% CI 0.25 to 0.56). The lowest reduction in incidence and case fatality was observed among Black children (Incidence RR 0.92, 95% CI 0.75 to 1.13; case fatality RR 0.80, 95% CI 0.41 to 1.58).

CONCLUSIONS

Hospitalisations and CFRs for drowning among children ≤5 years old have decreased from 2000 to 2016. Two years old are at the highest risk of both fatal and non-fatal drowning. Disparities exist for Black children in both the relative reduction in drowning hospitalisation incidence and case fatality. Interventions should focus on providing equitable preventative care measures to this population.

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.

Can child drowning be eradicated? A compelling case for continued investment in prevention

AIM

To explore temporal trends in fatal child drowning and benchmark progress across three high-income countries to provide prevention and future investment recommendations.

METHODS

A total population analysis of unintentional fatal drownings among 0- to 19-year-olds in Australia, Canada and New Zealand from 2005 to 2014 was undertaken. Univariate and chi-square analyses were conducted, age- and sex-specific crude rates calculated and linear trends explored.

RESULTS

A total of 1454 children drowned. Rates ranged from 0.92 (Canada) to 1.35 (New Zealand) per 100 000. Linear trends of crude drowning rates show both Australia (y = -0.041) and Canada (y = -0.048) reduced, with New Zealand (y = 0.005) reporting a slight rise, driven by increased drowning among females aged 15-19 years (+200.4%). Reductions of 48.8% in Australia, 51.1% in Canada and 30.4% in New Zealand were seen in drowning rates of 0- to 4-year-olds. First Nations children drowned in significantly higher proportions in New Zealand (X²  = 31.7; P < .001).

CONCLUSION

Continual investment in drowning prevention, particularly among 0- to 4-year-olds, is contributing to a reduction in drowning deaths; however, greater attention is needed on adolescents (particularly females) and First Nation's children. Lessons can be learned from each country's approach; however, further investment and evolution of prevention strategies will be needed to fully eradicate child drowning deaths.

Analysis of fatal unintentional drowning in Australia 2008-2020: implications for the Australian Water Safety Strategy

OBJECTIVE

To examine temporal trends in drowning in Australia against targets set in the Australian Water Safety Strategy (AWSS) 2008-2020 and to inform the development of the next iteration of the Strategy.

METHODS

A national analysis of unintentional fatal drowning rates per 100,000 population over 16 years (2004/05-2019/20) was conducted. Baseline rates (three-year average 2004/05-2006/07) were compared to the current three-year average (2017/18-2019/20) by sex, age group, drowning location and jurisdiction.

RESULTS

The overall rate of unintentional fatal drowning during the period decreased by 28%. Substantial reductions were observed in children 0-4 years (-63%) and 5-14 years (-56%). Progress has been less pronounced among people aged 75 years and over (-11%) and 15-24-year-olds (-14%). All locations and jurisdictions recorded reductions, aside from rocks (+46%).

CONCLUSIONS

Although the strategy fell short of its aspirational target of a 50% reduction in drowning by the year 2020, this target was exceeded in key age groups, including children. Implications for public health: The AWSS is a powerful tool to align drowning prevention sector actions to agreed objectives. Forthcoming strategies must take into consideration demographic and social change, areas where limited progress has been made and the latest evidence to guide future priorities.

Next steps for drowning prevention in rural and remote Australia: A systematic review of the literature

OBJECTIVE

To examine unintentional drowning by remoteness in Australia.

DESIGN

A systematic review of both peer-reviewed and grey literature published between January 1990 and December 2019 (inclusive).

METHOD

Using Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines, MEDLINE (Ovid), PubMed, EMBASE, Scopus, PsycINFO (ProQuest), SPORTDiscus and Google Scholar were searched for studies exploring fatal and non-fatal unintentional drowning by remoteness. Epidemiological data, common factors and prevention strategies were extracted and mapped to Australian standard geographical classifications (major cities, inner regional, outer regional, remote and very remote). Level of evidence was assessed using Grading of Recommendations Assessment, Development and Evaluation and prevention strategies aligned to the hierarchy of control.

RESULT

Thirty-two studies satisfied inclusion criteria (66% reporting epidemiology; 59% risk factors; and 44% prevention strategies). All (100%) included studies were assessed very low against Grading of Recommendations Assessment, Development and Evaluation. Findings indicate rural populations (ie, excluding major cities) have higher rates of drowning positively correlated with increasing remoteness. Common factors included age (child), natural water bodies, undertaking boating and watercraft activities and alcohol consumption. While a range of prevention strategies has been proposed, only one study outlined a rural drowning prevention strategy which had been implemented and evaluated. Strategies were generally low on the hierarchy of control.

CONCLUSION

Rural populations are proportionately overrepresented in drowning statistics. Proposed prevention strategies have unknown efficacy. Greater research into rural drowning of Australians is needed especially exploring behavioural motivations, program delivery, cost-effectiveness and evaluation. Development and use of a standard definition for remoteness are recommended. Rural populations use water extensively; therefore, there is an urgent need to keep them safe.

Characteristics of drowning deaths in an inner city river

A study was undertaken of all drowning deaths that occurred over a 30-year period from 1988 to 2017 in the urban section of the River Torrens, Adelaide, South Australia, an augmented waterway that runs through the central business district. Autopsy records from Forensic Science South Australia (FSSA) were reviewed. There were 34 drownings (0-5 cases/yr) with 28 males and 6 females (M;F = 4.6:1), with an age range for males of 18-76yrs (mean 42.0; SD 18.0) and for females of 20-84yrs (mean 69.3; SD 24.5). There were 15 (44%) accidents, 11 (32%) suicides, 1 (3%) homicide and 7 (21%) undetermined. Of the 22 cases during or after 1994 with complete toxicology reports, 10 (45%) had a blood alcohol concentration (BAC) of greater than 0.05% (g/100 mL) with an illicit substance detected in 4 (18%) cases: (MDMA (3,4-methylenedioxymethamphetamine), methylamphetamine and THC (delta-9-tetrahydrocannabinol) acid). The presence of various therapeutic drugs was also detected in 10 cases (45%) including temazepam, fluoxetine, diazepam, olanzapine, amitriptyline, carbamazepine, codeine, citalopram and valproate. Although the numbers of cases were not high, the urban portion of the River Torrens had a much higher number of drowning events per kilometre compared to other inland waterways in South Australia such as the Murray River. This is most likely due to the vulnerability that exists for intoxicated individuals in the city from falls into the water and to the availability of the river as a means of suicide to members of the adjacent urban population.

Out of the silos: embedding injury prevention into the Sustainable Development Goals

Globally, unintentional injuries contribute significantly to disability and death. Prevention efforts have traditionally focused on individual injury mechanisms and their specific risk factors, which has resulted in slow progress in reducing the burden. The Sustainable Development Goals (SDGs) represent a global agenda for promoting human prosperity while respecting planetary boundaries. While injury prevention is currently only recognised in the SDG agenda via two road safety targets, the relevance of the SDGs for injury prevention is much broader. In this State of the Art Review, we illustrate how unintentional injury prevention efforts can be advanced substantially within a broad range of SDG goals and advocate for the integration of safety considerations across all sectors and stakeholders. This review uncovers injury prevention opportunities within broader global priorities such as urbanisation, population shifts, water safeguarding and corporate social responsibility. We demonstrate the relevance of injury prevention efforts to the SDG agenda beyond the health goal (SDG 3) and the two specific road safety targets (SDG 3.6 and SDG 11.2), highlighting 13 additional SDGs of relevance. We argue that all involved in injury prevention are at a critical juncture where we can continue with the status quo and expect to see more of the same, or mobilise the global community in an 'Injury Prevention in All Policies' approach.

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.

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.

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.

Hot weather and risk of drowning in children: Opportunity for prevention

The link between outdoor temperature and risk of drowning in children is poorly understood. The objective of this study was to determine the association between elevated temperature and the chance of drowning in children and adolescents. We used a case-crossover study design to assess 807 fatal and nonfatal drowning-related hospitalisations among children aged 0 to 19 years in Quebec, Canada between 1989 and 2015. The primary exposure measure was maximum temperature the day of drowning. We estimated odds ratios and 95% confidence intervals (CI) for the association of temperature with drowning by age group (<2, 2-4, 5-9, 10-19 years), adjusted for precipitation, relative humidity, and holidays. Elevated temperature was associated with greater odds of drowning. Compared with 15 °C, a temperature of 30 °C was associated with 6 times the chance of drowning between 0 and 19 years of age (95% CI 4.40-8.16). The association was not modified by characteristics such as age or location of drowning. Relative to 15 °C, a temperature of 30 °C was associated with 3.75 times the odds of drowning in pools (95% CI 1.85-7.63) and 12.44 times the odds of drowning in other bodies of water (95% CI 3.53-43.81). Associations persisted even after implementation of a policy to restrict access to private pools in 2010. These findings suggest that hot weather is strongly associated with the risk of drowning in children aged 0 to 19 years. Interventions to prevent drowning in children should be enhanced during hot days, and not only around pools.

Predicting pool safety habits and intentions of Australian parents and carers for their young children

INTRODUCTION

Children under five years are most at risk of experiencing fatal and nonfatal drowning. The highest proportion of drowning incidents occur in private swimming pools. Lapses in adult supervision and failures in pool barriers are leading contributory factors for pool drowning in this age group.

METHODS

We investigated the role of the theory of planned behavior social cognitions (attitude, subjective norm, and perceived behavioral control) as well as perceived barriers, planning, role construction, and anticipated regret on parents' and carers' intentions and habits toward two pool safety behaviors: restricting access and supervising children around private swimming pools. The study adopted a cross-sectional correlational design. Participants (N = 509) comprised Australian parents or caregivers with children aged under five years and access to a swimming pool at their residence. Participants completed a battery of self-report measures of social cognitive variables with respect to the swimming pool safety behaviors for their children.

RESULTS

Path analytic models controlling for past behavior indicated that subjective norm, planning, anticipated regret, and role construction were important predictors of habit, and subjective norm was a consistent predictor of intentions, for both behaviors. Planning predicted intentions in the restricting access sample, while attitudes, barriers, and role construction also predicted intentions in the supervising sample. Both models controlled for past behavior.

CONCLUSION

Current findings indicate the importance of psychological factors for restricting access and supervising behaviors, with normative factors prominent for both reasoned (intentions) and non-conscious (habits) behavioral antecedents. It seems factors guiding restricting access, which likely require regular enactment of routine behaviors (e.g., ensuring gate is not propped open, pool fence meets standards), may be governed by more habitual than intentional processes.

Media reporting of summer drowning: A partial picture, useful for advocacy

ISSUE ADDRESSED

Media reporting of drowning deaths can be used for multiple purposes, including advocacy, enhancing data on drowning and supporting policy development. Accurate, current and comprehensive data help ensure the development of effective prevention programs as well as being a tool for advocacy. Advocacy for drowning prevention through the media can create behaviour change aligned to the Health Belief Model (HBM).

METHODS

This study compares media reports of fatal unintentional drowning across the 2017/18 Australian summer (1-December-2017 to 28-February-2018) with drowning cases in the National Coronial Information System (NCIS).

RESULTS

Media monitoring identified 84 cases, of which nine (11%), were deaths but not drowning. There were 104 NCIS deaths during this time of which 75 were reported in the media (72% capture). Media captured 100% of drowning incidents involving people 0-24 years and in ocean/harbour locations. Drowning incidents among older people (75+ years; 36% capture), in bathtubs (0% capture), swimming pools (33% capture) and with an unknown activity (27% capture) were poorly reported.

CONCLUSIONS

Where there are a lack of timely data on drowning, the use of media can help capture deaths, with limitations. Transmission of messages about drowning risk factors and prevention strategies, during summer, may lead to behaviour change at a time when drowning risk is highest. SO WHAT?: Working with the media to help enhance advocacy efforts, in particular the development and use of effective drowning prevention messages, is key to informing the public about risk factors in the HBM to achieve behaviour change.

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 Flood-Related Unintentional Fatal Drowning of Children and Adolescents Aged 0–19 Years in Australia

Disasters, such as flooding, are predicted to increase. Drowning is one of the leading causes of death during times of flood. This study examined the little explored topic of child drowning during floods, with the aim of identifying risk factors to inform prevention strategies. A retrospective, total population examination of cases of children and adolescents aged 0–19 years who died from unintentional flood-related drowning in Australia for the 16-year period 1 July 2002 to 30 June 2018 was undertaken. Univariate and chi-square analysis was conducted, with Fisher’s exact test used for cell counts <5. Across the study period, 44 flood-related drowning deaths occurred among children and adolescents (63.6% male; 34.1% aged 10–14 years). Almost all (84.1%) occurred in rivers, creeks, or streams in flood, with the remaining incidents occurring in storm water drains (n = 7). Leading activities immediately prior to drowning were non-aquatic transport (40.9%), swimming in floodwaters (25.0%), and falls into floodwaters (15.9%). Flood-related fatal drowning among children and adolescents is rare (0.05 per 100,000 population), however flood-drowning risk increases as remoteness increases, with children and adolescents drowning in floodwaters in very remote areas at a rate 57 times that of major cities. All drownings are preventable, and this study has identified key causal factors that must be considered in advocacy and prevention efforts. These include: the importance of adult supervision, avoiding flooded waterways when driving or for recreational purposes, and the increased risks for those residing in geographically isolated and socially disadvantaged areas. Findings must be considered when developing interventions and advocacy for the purposes of the reduction of child and adolescent drowning during times of flood.

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.

The association between school holidays and unintentional fatal drowning among children and adolescents aged 5-17 years

AIM

Children aged 5-17 years in Australia have one of the lowest unintentional fatal drowning rates. One possible explanation is the protective effect of formal schooling, reducing leisure time for exposure to water hazards. We examine differences in frequency and circumstances of drowning deaths in this age group between school holidays and school days in Australia.

METHODS

A total population survey (2005-2014) of unintentional fatal drownings was extracted from the (Australian) Royal Life Saving National Fatal Drowning Database. Date of drowning incident and state of residence were used to determine if the drowning occurred during school days or school holidays (including public holidays).

RESULTS

A total of 188 5-17 year-olds drowned during the study period. We found a statistically significant difference between drowning incidence during school holidays and school days, with relative risk (RR) of drowning on a holiday 2.40 times higher (confidence interval (CI): 1.82-3.18) than on a school day. This risk was similar for males (RR = 2.41; CI: 1.75-3.33) and females (RR = 2.38; CI: 1.33-4.27) but differs between children 5-9 years (RR = 3.05; CI: 1.98-4.72) and adolescents 10-17 years of age (RR = 2.02; CI: 1.38-2.93).

CONCLUSIONS

Drowning rates among 5-17 year-olds are more than twice as high during holidays than on school days. Impact of school holidays was the strongest among younger children, visitors to the drowning location and in pools and inland waterways. Results were robust to alternative specifications excluding weekends and treating them as holidays. Prevention strategies may include counselling parents and care providers of the increased risk ahead of school holidays, education on drowning risk in the school curriculum and extra holidays for parents and care givers.

Pattern of intentional drowning mortality: a total population retrospective cohort study in Australia, 2006-2014

BACKGROUND

While a downward trend in unintentional drowning deaths in Australia has been observed, little is known about intentional drowning mortality. Limited information on intentional drowning death impedes the planning, implementation, and evaluation of prevention strategies. This study aims to describe rates of intentional fatal drowning in Australia and compare these to other categories of drowning.

METHODS

Data were sourced from the Australian Bureau of Statistics (ABS) over a 9-year period (2006-2014). Rates and trends of intentional drowning were compared with unintentional, water-transport related and undetermined intent drowning. Rates of intentional drowning deaths across gender, age groups, states/territories, remoteness of residence and First Peoples of Australia were calculated. Relative risk (RR) (95% confidence interval [CI]) was calculated, and chi-square tests of independence were performed (p < 0.05).

RESULTS

The crude mortality rate for intentional drowning deaths in Australia over the study period was 0.23/100000, lower than unintentional drowning (0.89/100000). Males were 1.6 (CI: 1.4-2.0) times more likely than females to intentionally drown, however females made up a significantly larger proportion of intentional drowning deaths (38.2%) compared to unintentional deaths (22.4%) (χ2 = 47.3; df = 1; p < 0.05). A significant linear association between age group and intentional drowning was observed (χ2 = 131.3; p < 0.05), with individuals aged 75 years and over 32.6 times more likely to intentionally drown. Non-Indigenous peoples were 4.1 times more likely to intentionally drown in comparison to First Peoples of Australia. Residents of Inner Regional, Outer Regional, and Major Cities were 4.2 times (CI: 0.6-30.0), 4.1 times (CI: 0.6-29.9), and 4.0 times (CI: 0.6-28.6) more likely to intentionally drown, respectively, compared with residents of Very Remote areas.

CONCLUSIONS

This study adds to the limited evidence currently available about intentional drowning rates and trends in Australia. Being male, of older age groups, non-Indigenous, residing in Inner and Outer Regional areas, and Major Cities were risk factors for intentional drowning deaths. Improving data collection systems and furthering understanding of the risk factors of intentional drowning, as well as the development, implementation, and evaluation of prevention programmes, are required to reduce the risk of intentional drowning death in Australia.

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.

Breathalysing and surveying river users in Australia to understand alcohol consumption and attitudes toward drowning risk

BACKGROUND

Little is known about people's river usage, a leading drowning location. This study examines alcohol consumption patterns of river users and their attitudes to drowning risk.

METHODS

A convenience sample of adult (18+ years) river users were surveyed at four river locations. The survey covered eight domains: demographics; river attendance frequency; frequency of engaging in water activities; drinking patterns; alcohol and water safety knowledge; alcohol and water safety attitudes; alcohol consumption; and Blood Alcohol Concentration (BAC). For BAC, participants were asked to record time since their last alcoholic drink and were then breathalysed to record an estimate of their BAC. BAC was examined by BAC reading (negative, positive, ≥0.050%). Hazardous lifetime drinking levels were calculated and their impact on drowning risk evaluated. Univariate and chi square analysis (95% confidence interval) was conducted.

RESULTS

Six hundred eighty four people participated (51.6% female; 49.0% aged 18-34 years). Sixteen percent (15.9%) had a positive BAC (Mean + BAC = 0.068%; SD ± 0.08; Range = 0.001-0.334%), with 7.2% ≥0.050% (Mean BAC ≥0.050% =0.132%; SD ± 0.06). Those significantly more likely to record a BAC ≥0.050% at the river were: aged 18-34 years, resided in inner regional and low socio-economic areas, visited the river in the afternoon, with friends, on days with higher maximum air temperatures, frequent river users (11+ times in the last 30 days) and those who spend longer in the water (301+ minutes). River users who recorded a BAC ≥0.050% were more likely to self-report engaging in risky activities (i.e. diving into water of unknown depth and jumping into the river from height). River users on Australia day (a national public holiday) were significantly more likely to drink heavily (Mean BAC ≥0.05% = 0.175%; SD ± 0.09).

CONCLUSIONS

Despite males accounting for 85% of alcohol-related river drowning deaths, similar numbers of males and females were consuming alcohol at the river. This study has addressed a gap in knowledge by identifying river usage and alcohol consumption patterns among those at increased drowning risk. Implications for prevention include delivering alcohol-related river drowning prevention strategies to both males and females; at peak times including during hot weather, afternoons, public holidays and to river users who swim.

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.