Patterns of unintentional injury in childhood and their relation to socio-economic factors

Sociodemographic Patterns of Pediatric Patients in Specialized Burn Care in Sweden

Trauma is a leading cause of mortality in children. Burns affect children disproportionally. Although burn incidence and mortality are decreasing, differences in the risk depend on socioeconomic status. The present study aimed to investigate the sociodemographic patterns of pediatric patients (0-17 years) managed at the two burn centers in Sweden, Uppsala, and Linköping, between 2010 and 2020.

METHOD

This retrospective register-based study used hospital records from the two burn centers combined with information from Statistics Sweden plus data regarding number of asylum seekers from the Swedish Migrations Agency. Choropleth maps representing the patients' geographical distribution were created. Information about income levels per geographic area was added. A Wilcoxon signed-rank test was performed to investigate differences in median income levels between the areas where the patients lived, related to Sweden's median income.

RESULTS

The study included 2455 patients. Most of the children aged below 5 years (76%) and were boys (60%). The mean percentage of total skin area was 4.2%. There was no significant increment or decrease in the incidence of pediatric burns during the study. Most patients with recorded zip codes lived in areas with an income level below the national median (n = 1974, 83%). Children with asylum status were over-represented compared with residents and/or Swedish citizens.

CONCLUSIONS

In Sweden, most pediatric burns occur in families that live in areas with low-income levels. Pediatric burns affect children with asylum status disproportionally compared with those who are residents in and/or citizens of Sweden. Prevention strategies should be designed and implemented to alleviate this health inequity.

Socioeconomic variables and fracture risk in children and adolescents: a population-based study from northern Sweden

OBJECTIVES

Previous studies have investigated the association between socioeconomic characteristics and fractures among children, producing different results. In a population-based study, we previously found an increased risk of fractures among children living in an urban municipality compared with rural municipalities. This study aimed to evaluate the importance of socioeconomic variables for the incidence of fractures among 0-17 year olds.

SETTING, DESIGN AND OUTCOME MEASURE

We present a longitudinal, observational study of a population 0-17 years of age. Data from an injury database were linked with additional socioeconomic data for the population at risk. These were 55 758 individuals residing within the primary catchment area of a regional hospital in northern Sweden. Using the number of fractures as the outcome, we fitted a generalised linear mixed model for a Poisson response with socioeconomic variables at the family level as independent variables while controlling for age, sex and place of residence.

RESULTS

We found a significant association between higher levels of family income and the risk of fracture, rate ratio 1.40 (1.28-1.52) p<0.001 when comparing the highest income quintile to the lowest as well as the number of siblings and the risk of fracture. Children with one or two siblings had a rate ratio of 1.28 (1.19-1.38) p<0.001 when compared with children with no siblings. Parents' educational level and having a single parent showed no significant association with fractures. The previously observed association between municipalities and fracture risk was less pronounced when taking family-level socioeconomic variables into account.

CONCLUSION

Our results indicate that children from families with higher income and with siblings are at greater risk of sustaining fractures.

Examination of Racial Disparities in Adolescents Seen in the Emergency Department for Head, Neck, or Brain Injury

BACKGROUND

Given the frequency, severity, and attention of traumatic brain injury in children, benchmarking disparities and injury characteristics for adolescent patients is pivotal in understanding and enhancing both clinical care and outcomes.

OBJECTIVES

The purpose of this study was to investigate racial disparities on mechanism of injury, clinical outcomes, and social-health factors among adolescents treated in the emergency department (ED) for a head, neck, or brain injury.

METHODS

This study is the result of a retrospective chart review of head-, neck-, and brain-injured adolescent patients (n = 2857) treated at three community hospital EDs and one stand-alone ED. Outcome measures included patient demographics (gender, race/ethnicity, age), Glasgow Coma Scale score, hospital length of stay, intensive care unit length of stay, mechanism of injury, primary diagnosis, secondary diagnosis of a concussion, ventilation days, discharge disposition, and primary insurance.

RESULTS

There were racial differences in primary diagnosis, mechanism of injury, and insurance status. Results indicated that a higher proportion of white patients were diagnosed with a concussion compared with black patients (p < 0.001). Moreover, a higher proportion of white patients were seen in the ED for head, neck, or brain injury as a result of a sports or motor vehicle incident, whereas a leading mechanism among black patients was assault (p = 0.01). More white patients had private insurance, whereas more black patients had Medicaid (p < 0.001).

CONCLUSION

The disparities in mechanisms for which black and white adolescent patients are seeking care at the ED for head, neck, or brain injury help to identify social-health risks of sustaining a head, neck, or brain injury. These racial disparities between black and white adolescents seen at the ED for head, neck, or brain injury suggest the need for further research to better understand the national representation of these disparities.

Evaluation of Early Childhood Home Visiting to Prevent Medically Attended Unintentional Injury

STUDY OBJECTIVE

We evaluated the influence of home visiting on the risk for medically attended unintentional injury during home visiting (0 to 3 years) and subsequent to home visiting (3 to 5 years).

METHODS

A retrospective, quasi-experimental study was conducted in a cohort of mother-child pairs in Hamilton County, OH. The birth cohort (2006 to 2012) was linked to administrative home visiting records and data from a population-based injury surveillance system containing records of emergency department (ED) visits and hospitalizations. Cox proportional-hazard regression was used to compare medically attended unintentional injury risk (0 to 2, 0 to 3, and 3 to 5 years) in a home-visited group versus a propensity score-matched comparison group. The study population was composed of 2,729 mother-child pairs who received home visiting and 2,729 matched mother-child pairs in a comparison group.

RESULTS

From birth to 2 years, 17.2% of the study population had at least one medically attended unintentional injury. The risk for medically attended unintentional injury from aged 0 to 2 and 0 to 3 years was significantly higher in the home-visited group relative to the comparison group (hazard ratio 1.17, 95% confidence interval 1.01 to 1.35; hazard ratio 1.15, 95% confidence interval 1.00 to 1.31, respectively). Additional injuries in the home-visited group were superficial, and the increased risk for medically attended unintentional injury was observed for ED visits and not hospitalizations.

CONCLUSION

Home-visited children were more likely to have a medically attended unintentional injury from birth to aged 3 years. This finding may be partially attributed to home visitor surveillance of injuries or greater health care-seeking behavior. Implications and alternative explanations are discussed.

School-based education programmes for the prevention of unintentional injuries in children and young people

BACKGROUND

Unintentional injuries are the leading cause of death in children aged four to 18 years and are a major cause of ill health. The school setting offers the opportunity to deliver preventive interventions to a large number of children and has been used to address a range of public health problems. However, the effectiveness of the school setting for the prevention of different injury mechanisms in school-aged children is not well understood.

OBJECTIVES

To assess the effects of school-based educational programmes for the prevention of injuries in children and evaluate their impact on improving children's safety skills, behaviour and practices, and knowledge, and assess their cost-effectiveness.

SEARCH METHODS

We ran the most recent searches up to 16 September 2016 for the following electronic databases: Cochrane Injuries Group Specialised Register; Cochrane Central Register of Controlled Trials; Ovid MEDLINE(R), Ovid MEDLINE(R) In-Process & Other Non-Indexed Citations; Ovid MEDLINE(R) Daily and Ovid OLDMEDLINE(R); Embase and Embase Classic (Ovid); ISI Web of Science: Science Citation Index Expanded; ISI Web of Science Conference Proceedings Citation Index-Science; ISI Web of Science: Social Sciences Citation Index; ISI Web of Science: Conference Proceedings Citation Index - Social Sciences & Humanities; and the 14 October 2016 for the following electronic databases: Health Economics Evaluations Database (HEED); Health Technology Assessment Database (HTA); CINAHL Plus (EBSCO); ZETOC; LILACS; PsycINFO; ERIC; Dissertation Abstracts Online; IBSS; BEI; ASSIA; CSA Sociological Abstracts; Injury Prevention Web; SafetyLit; EconLit (US); PAIS; UK Clinical Research Network Study Portfolio; Open Grey; Index to Theses in the UK and Ireland; Bibliomap and TRoPHI.

SELECTION CRITERIA

We included randomised controlled trials (RCTs), non-randomised controlled trials (non-RCTs), and controlled before-and-after (CBA) studies that evaluated school-based educational programmes aimed at preventing a range of injury mechanisms. The primary outcome was self-reported or medically attended unintentional (or unspecified intent) injuries and secondary outcomes were observed safety skills, observed behaviour, self-reported behaviour and safety practices, safety knowledge, and health economic outcomes. The control groups received no intervention, a delayed injury-prevention intervention or alternative school-based curricular activities. We included studies that aimed interventions at primary or secondary prevention of injuries from more than one injury mechanism and were delivered, in part or in full, in schools catering for children aged four to 18 years.

DATA COLLECTION AND ANALYSIS

We used standard methodological procedures expected by Cochrane. Two review authors identified relevant trials from title and abstracts of studies identified in searches and two review authors extracted data from the included studies and assessed risk of bias. We grouped different types of interventions according to the outcome assessed and the injury mechanism targeted. Where data permitted, we performed random-effects meta-analyses to provide a summary of results across studies.

MAIN RESULTS

The review included 27 studies reported in 30 articles. The studies had 73,557 participants with 12 studies from the US; four from China; two from each of Australia, Canada, the Netherlands and the UK; and one from each of Israel, Greece and Brazil. Thirteen studies were RCTs, six were non-RCTs and eight were CBAs. Of the included studies, 18 provided some element of the intervention in children aged four to 11 years, 17 studies included children aged 11 to 14 years and nine studies included children aged 14 to 18 years.The overall quality of the results was poor, with the all studies assessed as being at high or unclear risks of bias across multiple domains, and varied interventions and data collection methods employed. Interventions comprised information-giving, peer education or were multi-component.Seven studies reported the primary outcome of injury occurrence and only three of these were similar enough to combine in a meta-analysis, with a pooled incidence rate ratio of 0.73 (95% confidence interval (CI) 0.49 to 1.08; 2073 children) and substantial statistical heterogeneity (I² = 63%). However, this body of evidence was low certainty, due to concerns over this heterogeneity (inconsistency) and imprecision. This heterogeneity may be explained by the non-RCT study design of one of the studies, as a sensitivity analysis with this study removed found stronger evidence of an effect and no heterogeneity (I² = 0%).Two studies report an improvement in safety skills in the intervention group. Likewise, the four studies measuring observed safety behaviour reported an improvement in the intervention group relative to the control. Thirteen out of 19 studies describing self-reported behaviour and safety practices showed improvements, and of the 21 studies assessing changes in safety knowledge, 19 reported an improvement in at least one question domain in the intervention compared to the control group. However, we were unable to pool data for our secondary outcomes, so our conclusions were limited, as they were drawn from highly diverse single studies and the body of evidence was low (safety skills) or very low (behaviour, safety knowledge) certainty. Only one study reported intervention costs but did not undertake a full economic evaluation (very low certainty evidence).

AUTHORS' CONCLUSIONS

There is insufficient evidence to determine whether school-based educational programmes can prevent unintentional injuries. More high-quality studies are needed to evaluate the impact of educational programmes on injury occurrence. There is some weak evidence that such programmes improve safety skills, behaviour/practices and knowledge, although the evidence was of low or very low quality certainty. We found insufficient economic studies to assess cost-effectiveness.

Epidemiology of paediatric minor head injury: Comparison of injury characteristics with Indices of Multiple Deprivation

BACKGROUND

Head injury (HI) is a common presentation to Child Emergency Departments (CEDs), but the actual number of children attending with minor HI is unclear. Most research has focussed on admitted patients, often relying on hospital-coded admission data. We studied the incidence of minor HI presenting to the CED of a major teaching hospital in Coventry and Warwickshire. HI attendances were compared with population data to identify injury patterns relating to deprivation.

METHODS

All CED admissions were screened by the research team, and data on minor head injuries (GCS 13-15) collected prospectively from 1st January until 31st August 2011. Information was collected on demographics, ethnicity, cause and severity of injury, injury location (in or outside the home), other injuries and mode of arrival. Deprivation data were obtained by cross-referencing postcodes with English Indices of Multiple Deprivation (IMD 2010). For comparison, the hospital audit department provided figures for coded head injuries during the same period.

RESULTS

During the 8 month period, hand-searching identified 1747 children with minor HI, aged between 0 and 16 years. Of these 99% had minimal HI (GCS 15 or 'alert'). In the same period, hospital-coded minor HIs numbered only 1081. HIs formed 9% of all CED attendances. Thirteen children returned to the CED with worrying symptoms after discharge home. Approximately 3.4% of the local paediatric population attend the CED with HI per year (3419/100,000 population). Falls accounted for 62% of HIs overall, rising to 77% in children aged 0-5. Most in-home head injuries (81%) were the result of falls (p<0.0001). Significantly more injuries took place inside the home for 0-5 year olds (58%) than for older children (20%) (p<0.0001). Children living in the most deprived areas were more likely to attend the CED with HI (RR: 1.19; CI: 1.06-1.35, p=0.004), and arrive using emergency services (OR: 1.77; CI: 1.30-2.40, p<0.001). There were no significant differences between the deprived and non-deprived groups for location or cause of injury.

CONCLUSIONS

Young children are particularly at risk of HI and parents should be offered information on injury prevention. More children from deprived areas attended with HI and these families may benefit most from targeted interventions.

Fatal crash involvement of unlicensed young drivers: county level differences according to material deprivation and urbanicity in the United States

OBJECTIVES

This study assessed the association between county level material deprivation and urbanization with fatal road traffic crashes involving young unlicensed drivers in the United States (US).

BACKGROUND

Road traffic crashes have been positively associated with area deprivation and low population density but thus far few studies have been concerned specifically with young drivers, especially those that are unlicensed.

METHODS

A county material deprivation index was derived from the Townsend Material Deprivation Index, with variables extracted from the US Census (2000). An urbanicity scale was adapted from the US Department of Agriculture's Rural-Urban Continuum Codes (2003). Data on fatal crashes involving a young unlicensed driver during a seven-year period (2000-2006; n=3059) were extracted from the Fatality Analysis Reporting System. The effect of deprivation and urbanicity on the odds of the occurrence of at least one fatal crash at the county level was modeled by conditional and unconditional logistic regression.

RESULTS

The conditional model found a positive association between material deprivation and a fatal crash involving a young unlicensed driver (OR=1.19, 95% CI 1.17, 1.21). The interaction between urbanicity and material deprivation was negatively associated in suburban counties for fatal crashes (OR=0.92, 95% CI 0.90, 0.95).

CONCLUSIONS

An association with material deprivation and the likelihood of a fatal crash involving a young unlicensed driver is a new finding. It can be used to inform specific county-level interventions and promote state licensing policies to provide equity in young people's mobility regardless of where they live.

The impact of child safety promotion on different social strata in a WHO Safe Community

Background:

The objective of the current study was to evaluate outcomes of a program to prevent severe and less severe unintentional child injuries among the different social strata under WHO Safe Community program. Specifically, the aim was to study effectiveness of Safe Community program for reducing child injury.

Methods:

A quasi-experimental design was used, with pre- and post-implementation registrations covering the children (0 -15 years) in the program implementation area (population 41,000) and in a neighboring control municipality (population 26,000) in Östergötland County, Sweden.

Results:

Boys from not vocationally active households displayed the highest pre-intervention injury rate in both the control and intervention areas. Also in households in which the vocationally significant member was employed, boys showed higher injury rates than girls. Households in which the vocationally significant member was self-employed, girls exhibited higher injury rates than boys in the intervention area. After 6 years of program activity, the injury rates for boys and girls in employed category and injury rates for girls in self-employed category displayed a decreasing trend in the intervention area. However, in the control area injury rate decreased only for boys of employed families.

Conclusions:

The study indicated that almost no changes in injury rates in the control area suggested that the reduction of child injuries in the intervention area between 1983 and 1989 was likely to be attributable to the safety promotion program. Therefore, the current study indicates that Safe Community program seems to be successful for reducing child injuries.

Safety standards and socioeconomic disparities in school playground injuries: a retrospective cohort study

Background

Playground injuries are fairly common and can require hospitalization and or surgery. Previous research has suggested that compliance with guidelines or standards can reduce the incidence of such injuries, and that poorer children are at increased risk of playground injuries.

Objective

The objective of this study was to determine the association between playground injury and school socioeconomic status before and after the upgrading of playground equipment to meet CSA guidelines.

Methods

Injury data were collected from January 1998-December 1999 and January 2004 - June 2007 for 374 elementary schools in Toronto, Canada. The objective of this study was to investigate the effect of a program of playground assessment, upgrading, and replacement on school injury rates and socio-economic status. Injury rates were calculated for all injuries, injuries that did not occur on equipment, and injuries on play equipment. Poisson regression was performed to determine the relationship between injury rates and school socio-economic status.

Results

Prior to upgrading the equipment there was a significant relationship between socio-economic status and equipment-related injuries with children at poorer schools being at increased risk (Relative risk: 1.52 [95% CI = 1.24-1.86]). After unsafe equipment was upgraded, the relationship between injury and SES decreased and was no longer significant (RR 1.13 [95% CI = 0.95-1.32]).

Conclusions

Improvements in playground equipment can result in an environment in which students from schools in poorer neighbourhoods are no longer at increased risk of injuries on play equipment.

A review of injury epidemiology in the UK and Europe: some methodological considerations in constructing rates

BACKGROUND

Serious injuries have been stated as a public health priority in the UK. However, there appears to be a lack of information on population-based rates of serious injury (as defined by a recognised taxonomy of injury severity) at national level from either official statistics or research papers. We aim to address this through a search and review of literature primarily focused within the UK and Europe.

METHODS

The review summarizes research papers on the subject of population based injury epidemiology published from 1970 to 2008. We examined critically methodological approaches in measuring injury incident rates including data sources, description of the injury pyramid, matching numerator and denominator populations as well as the relationship between injury and socioeconomic status.

RESULTS

National representative rates come from research papers using official statistics sources, often focusing on mortality data alone. Few studies present data from the perspective of an injury pyramid or using a standardized measure of injury severity, i.e. Injury Severity Score (ISS). The population movement that may result in a possible numerator - denominator mismatch has been acknowledged in five research studies and in official statistics. The epidemiological profile shows over the past decades in UK and Europe a decrease in injury death rates. No major trauma population based rates are available within well defined populations across UK over recent time periods. Both fatal and non-fatal injury rates occurred more frequently in males than females with higher rates in males up to 65 years, then in females over 65 years. Road traffic crashes and falls are predominant injury mechanisms. Whereas a straightforward inverse association between injury death rates and socio-economic status has been observed, the evidence of socioeconomic inequalities in non-fatal injuries rates has not been wholly consistent.

CONCLUSION

New methodological approaches should be developed to deal with the study design inconsistencies and the knowledge gaps identified across this review. Trauma registries contain injury data from hospitals within larger regions and code injury by Abbreviated Injury Scale enabling information on severity; these may be reliable data sources to improve understanding of injury epidemiology.

Individual factors explain neighbourhood variations in accidents to children under 5 years of age

Previous studies have identified possible neighbourhood-level influences on the risk of injuries to preschool children, but none have had sufficient data at both household and area level to explain these neighbourhood effects. We used data from the Avon Longitudinal Study of Parents and Children, which recruited over 14,062 children at birth in the former county of Avon, UK, and collected information about accidents, as well as extensive social, health and developmental data throughout the first 5 years of life. This information was combined with census and geographical data in order to identify neighbourhood influences on accident risks and then attempt to explain these using multilevel regression modelling. A small but statistically significant amount of between-neighbourhood variance in accident risk was found, with neighbourhood intraclass correlation coefficients of 0.82% for any accident, and 0.84% for accidents resulting in injury requiring medical attention. This was entirely accounted for by a variety of child, parental and household level variables. Independent risk factors for both outcomes were children who were developmentally more advanced or displayed greater conduct and behavioural problems, mothers who were of younger age, who were without work, who were smokers, whose partners were unemployed or drank alcohol excessively, and households in which there had recently been adverse life events, or which were under financial stress. The mother's perceptions of neighbourhood quality also explained some of the risks for any accident, but not for medically attended accidents, and this was a variable that operated at the level of individual households rather than at the level of neighbourhoods. The implications of this study are that differences in accident risk between neighbourhoods are explained by geographical clustering of similar types of children, families and households. Interventions should focus more on parental factors and household social circumstances than on the physical environment or community based risks. However, many of these factors are those most resistant to modification without broader societal change.

The area-based social patterning of injuries among 10 to 19 year olds. Changes over time in the Stockholm County

BACKGROUND

Area-based studies of childhood injuries strongly suggest that neighborhood socio-demographic and economic circumstances impact on various - though not all - types of injuries. The primary aim of this study was to investigate the stability over time of the association between area characteristics and childhood injuries of various causes.

METHODS

Register-based and ecological, the study encompassed Stockholm County's 138 parishes, and considered two time periods (1993-95; 2003-05). Two indices were measured: economic deprivation and social fragmentation, and parishes were allocated to their respective quintile on each index. Data on both unintentional and intentional injuries for children (boys and girls) aged 10-14 and 15-19 respectively were gathered from the County Council's hospital inpatient register. For each period and index, gender, age and cause-specific comparisons were made to assess the rate ratios (with 95% confidence intervals) of being injured using parishes belonging to the best index level as a comparison group. A series of simple and partial Pearson correlations were also calculated to assess the independent contribution of each index.

RESULTS

Regardless of time period, there were rather few significant rate ratios and, when they occurred, there were both under and excess risks. For instance, in each period, boys from both age groups living in parishes with the highest levels of economic deprivation had lower rate of injury as a motor vehicle rider. Most strikingly, intentional injuries were more frequent during the second time period and in considerable excess among girls aged 15-19 from more economically deprived areas. Also, during that last period, none of the injury causes correlated significantly with the index of social fragmentation after adjustment for economic deprivation (partial correlation).

CONCLUSION

Over a ten-year period, differential economic deprivation among parishes has widened more than social fragmentation in Stockholm County. The correlation between those indices is high in both periods of time whilst the association between the levels of each index and injury rates varies depending on group of injuries or time period considered. It is of concern that intentional injuries have increased numerically and are significantly and positively correlated with economic deprivation (net of social fragmentation), in particular among girls.

Trauma and Adult Attention Deficit Hyperactivity Disorder

This study investigated the relationship between adult attention deficit hyperactivity disorder (ADHD) and trauma. Fifty-eight adults admitted to hospital with musculoskeletal trauma were evaluated using scales that determine the presence of ADHD in childhood and adulthood. Each patient was also interviewed by an adult psychiatrist and a child and adolescent psychiatrist. The control group consisted of 30 adult patients with complaints other than trauma who did not have a history of repetitive traumas. There were 36 (62.2%) cases of ADHD in the patient group compared with four (13.3%) in the control group; this difference was statistically significant. When the level of trauma was evaluated, ADHD was identified in 23 of the 26 (88.5%) patients with high energy traumas compared with 14 of the 32 (43.8%) patients with low energy traumas; this difference was also statistically significant. This study shows that patients with adult ADHD are more prone to injuries, particularly high energy traumas such as motor vehicle accidents. Patients who have repeated high energy traumas should be evaluated by a psychiatrist for ADHD.

Socio-economic distribution of environmental risk factors for childhood injury

OBJECTIVE

Childhood injury remains the single most important cause of mortality in children aged between 1-14 years in many countries. It has been proposed that lower socio-economic status (SES) and poorer housing contribute to potential hazards in the home environment. This study sought to establish whether the prevalence of observed hazards in and around the home was differentially distributed by SES, in order to identify opportunities for injury prevention.

METHODS

This study was a cross-sectional, random sample survey of primary school children from 32 schools in Brisbane. Interviews and house audits were conducted between July 2000 and April 2003 to collect information on SES (income, employment and education) and previously identified household hazards.

RESULTS

There was evidence of a relationship between prevalence of household environmental hazards and household SES; however, the magnitude and direction of this relationship appeared to be hazard-specific. Household income was related to play equipment characteristics, with higher SES groups being more likely to be exposed to risk. All three SES indicators were associated with differences in the home safety characteristics, with the lower SES groups more likely to be exposed to risk.

CONCLUSION

The differential distribution of environmental risk factors by SES of household may help explain the SES differential in the burden of injury and provides opportunities for focusing efforts to address the problem.

A descriptive study of injuries in a pediatric population of North-Eastern Italy

Childhood injuries are a major public health problem in Italy. From a study conducted in 1984, injury rates were found to be higher in Trieste, in the north-east of the country, than in other Italian areas. We conducted a new study to evaluate whether injury rates and patterns have changed in Trieste. There are three emergency rooms (ER) in Trieste. We collected and analyzed information on all injured children 0-16 years of age attending these ER in 2003 (child population 0-16 years of age was 28,000). We calculated the annual injury risk overall and by age. We described characteristics of the children (age, sex) and injuries (place, cause, type, affected body part, severity). 5,928 injured children attended the ER, and the annual injury risk was 21.5%. The home was the most frequent place where injuries occurred, especially among the youngest children. The most commonly injured body parts were the limbs and, among the youngest children, the head and face. Approximately 20% of children had moderate to severe injuries (AIS>1), and less then 3% were admitted to the hospital. In comparison to the previous study, there have been no significant changes in the annual risk of childhood injury and in the injury patterns. On the contrary, we observed a dramatic reduction in the frequency of hospitalization, which is probably attributable to the recent implementation of short observation and to the improvement of diagnostic/therapeutic paths in the ER. In conclusion, childhood injuries are still a relevant public health problem in this Italian area and new efforts are needed to prevent them.

Socio-economic status and types of childhood injury in Alberta: a population based study

Background

Childhood injury is the leading cause of mortality, morbidity and permanent disability in children in the developed world. This research examines relationships between socio-economic status (SES), demographics, and types of childhood injury in the province of Alberta, Canada.

Methods

Secondary analysis was performed using administrative health care data provided by Alberta Health and Wellness on all children, aged 0 to 17 years, who had injuries treated by a physician, either in a physician's office, outpatient department, emergency room and/or as a hospital inpatient, between April 1^st. 1995 to March 31^st. 1996. Thirteen types of childhood injury were assessed with respect to age, gender and urban/rural location using ICD9 codes, and were related to SES as determined by an individual level SES indicator, the payment status of the Alberta provincial health insurance plan. The relationships between gender, SES, rural/urban status and injury type were determined using logistic regression.

Results

Twenty-four percent of Alberta children had an injury treated by physician during the one year period. Peak injury rates occurred about ages 2 and 13–17 years. All injury types except poisoning were more common in males. Injuries were more frequent in urban Alberta and in urban children with lower SES (receiving health care premium assistance). Among the four most common types of injury (78.6% of the total), superficial wounds and open wounds were more common among children with lower SES, while fractures and dislocations/sprains/strains were more common among children receiving no premium assistance.

Conclusion

These results show that childhood injury in Alberta is a major health concern especially among males, children living in urban centres, and those living on welfare or have Treaty status. Most types of injury were more frequent in children of lower SES. Analysis of the three types of the healthcare premium subsidy allowed a more comprehensive picture of childhood injury with children whose families are on welfare and those of Treaty status presenting more frequently for an injury-related physician's consultation than other children. This report also demonstrates that administrative health care data can be usefully employed to describe injury patterns in children.

Gender differences in adolescent injury characteristics: A population-based study of hospital A&E data

OBJECTIVES

To investigate patterns of adolescent home/leisure injury serious enough to require hospital attendance.

STUDY DESIGN

Population-based analysis of data collected by the Home and Leisure Accident Surveillance System (HASS/LASS).

METHODS

Study subjects were 0-17 year old residents of Airdrie and Coatbridge, Lanarkshire, Scotland, who attended Monklands Hospital Accident and Emergency (A&E) Department with a home/leisure injury during calendar years 1996-1999. Male to female relative risk ratios (M:F RRRs) for A&E attendance, fracture and hospital admission, stratified into sports and non-sports injuries, were calculated. Sports injuries were further analysed by specific sports and by whether the sports activity was organized or informal. Data were analysed in age groups corresponding to children's stage of schooling.

RESULTS

The M:F RRR for non-sports A&E attendances remained constant throughout childhood (1.35, 95% CI 1.30-1.39 in 0-17 year olds), whilst that for sports attendances increased sharply with age (2.50, 95% CI 0.89-7.02 in 0-4 year olds, increasing to 8.11, 95% CI 6.27-10.51 in 16-17 year olds). Of sports injury attendances, 50.3% were football-related. Football was overwhelmingly the main cause of boys' sports injury in both the organized and informal sports injury categories. When football injuries were excluded from the analysis, the widening teenage gender gap in injury risk disappeared. There was no significant gender difference in teenagers' rates of A&E attendance for injuries sustained during compulsory school physical education (PE), suggesting a dose-response relationship between sports participation and injury risk.

CONCLUSIONS

This study found significant gender inequalities in adolescent injury risk, which were largely attributable to boys' football injuries. Focusing prevention efforts on making football safer would, then, be a sensible strategy for reducing the overall burden of adolescent injury and for reducing sex inequalities in injury risk; however further research is needed to understand how the risks differ between organized and informal football. These findings are also interesting because of what they suggest about teenage girls' lack of participation in sport and habitual physical activity. This is clearly of public health concern because of the links between physical inactivity and a range of health problems.

Quantifying the association between physical activity and injury in primary school-aged children

BACKGROUND

Regular physical activity is strongly advocated in children, with recommendations suggesting up to several hours of daily participation. However, an unintended consequence of physical activity is exposure to the risk of injury. To date, these risks have not been quantified in primary school-aged children despite injury being a leading cause for hospitalization and death in this population.

OBJECT

Our goal was to quantify the risk of injury associated with childhood physical activity both in and out of the school setting and calculate injury rates per exposure time for organized and non-organized activity outside of school.

METHODS

The Childhood Injury Prevention Study prospectively followed a cohort of randomly selected Australian primary school-and preschool-aged children (4 to 12 years). Over 12 months, each injury that required first aid attention was registered with the study. Exposure to physical activity outside school hours was measured by using a parent-completed 7-day diary. The age and gender distribution of injury rates per 10 000 hours of exposure were calculated for all activity and for organized and non-organized activity occurring outside school hours. In addition, child-based injury rates were calculated for physical activity-related injuries both in and out of the school setting.

RESULTS

Complete diary and injury data were available for 744 children. There were 504 injuries recorded over the study period, 396 (88.6%) of which were directly related to physical activity. Thirty-four percent of physical activity-related injuries required professional medical treatment. Analysis of injuries occurring outside of school revealed an overall injury rate of 5.7 injuries per 10000 hours of exposure to physical activity and a medically treated injury rate of 1.7 per 10000 hours.

CONCLUSION

Injury rates per hours of exposure to physical activity were low in this cohort of primary school-aged children, with <2 injuries requiring medical treatment occurring for every 10000 hours of activity participation outside of school.

A study of childhood attendance at emergency departments in the West Midlands region

INTRODUCTION

Research into childhood attendance at EDs in the UK has focused mainly on injury rather than medical conditions and studies have been relatively small. This study looks at all types of ED attendance by children across a large population.

DATA AND METHODS

Routine data on all new attendances by children under 16 years were available for 12 EDs in the West Midlands (period: 1 April 2002 to 31 March 2004, 365 695 records). The data were split into four age groups (<1, 1-4, 5-9, and 10-15 years).

RESULTS

Injury related conditions increased with age (with the exception of head injury). Respiratory and gastrointestinal were the most common medical conditions decreased with age. 11.5% of children were admitted to hospital and this varied from 8.2% (10-15 years) to 24.2% (<1 year).

CONCLUSIONS

This study has shown substantial variations in ED attendance by age and has given an insight into the variation among hospitals. This is the largest study of childhood ED attendance undertaken in the UK, and it is hoped that the questions raised will prompt more research in this field.

Inequalities in hospital admission rates for unintentional poisoning in young children

OBJECTIVE

To determine the relationship between deprivation and hospital admission rates for unintentional poisoning, by poisoning agent in children aged 0-4 years.

DESIGN

Cross sectional study of routinely collected hospital admissions data.

SETTING

East Midlands, UK.

PARTICIPANTS

1469 admissions due to unintentional poisoning over two years.

MAIN OUTCOME MEASURE

Hospital admission rates for unintentional poisoning. Incidence rate ratios (IRRs) comparing hospital admission rates for poisoning in the most and least deprived electoral wards.

RESULTS

Children in the most deprived wards had admission rates for medicinal poisoning that were 2-3 times higher than those in the least deprived wards (IRR 2.49, 95% CI 1.87 to 3.30). Admission rates for non-medicinal poisoning were about twice as high in the most compared to the least deprived wards (IRR 1.77, 95% CI 1.19 to 2.64). Deprivation gradients were particularly steep for benzodiazepines (IRR 5.63, 95% CI 1.72 to 18.40), antidepressants (IRR 4.58, 95% CI 1.80 to 11.66), cough and cold remedies (IRR 3.93, 95% CI 1.67 to 9.24), and organic solvents (IRR 3.69, 95% CI 1.83 to 7.44).

CONCLUSIONS

There are steep deprivation gradients for admissions to hospital for childhood poisoning, with particularly steep gradients for some psychotropic medicines. Interventions to reduce these inequalities should be directed towards areas of greater deprivation.

The impact of home safety promotion on different social strata in a WHO safe community

OBJECTIVES

Few studies have investigated the impact of home safety promotion programmes on different social strata. The aim of this study was to investigate the distribution of effects of a community-based home safety programme on home injury rates among families with different connections to the labour market.

METHODS

A quasi-experimental design was used, with pre- and post-implementation registrations covering the total populations below 65 years of age in the programme implementation area (population 41,000) and in a neighbouring comparison municipality (population 26,000) in Ostergötland County, Sweden.

RESULTS

In the intervention and comparison areas, households in which the adults were not vocationally active displayed the highest rates of home injury. After 6 years of programme activity, the home injury rates for males and females in all social status categories displayed a decreasing trend in the intervention area. The opposite was true for the comparison area, i.e. the incidence of injury increased, with the exception of females in non-vocationally active households. The decline in injury rates in the intervention area was statistically significant for males and females in the employed category and for males in the non-vocationally active category. Changes in injury rates in the comparison area were not statistically significant.

CONCLUSION

The programme was partially successful in that it reduced the injury rate in non-vocationally active households, but it did not influence the injury rate in the employed households. The study design did not allow for conclusions regarding why the post-intervention injury rates remained higher in non-vocationally active households. Further research on the association between the incidence of home injury and socio-economic factors is warranted.

Socioeconomic status and non-fatal injuries among Canadian adolescents: variations across SES and injury measures

Background

While research to date has consistently demonstrated that socioeconomic status (SES) is inversely associated with injury mortality in both children and adults, findings have been less consistent for non-fatal injuries. The literature addressing SES and injury morbidity among adolescents has been particularly inconclusive. To explore potential explanations for these discrepant research findings, this study uniquely compared the relationship across different measures of SES and different causes of injury (recreation versus non-recreation injuries) within a sample of Canadian adolescents.

Methods

The sample included adolescent participants (aged 12 to 19 years) in the Canadian 1996–1997 cross-sectional National Population Health Survey (n = 6967). Five SES measures (household income, two neighbourhood-level proxy measures, two parental indicators) were examined in relation to three injury outcomes (total, recreation, and non-recreation injuries) using multivariable logistic regression.

Results

Among males, a clear relationship with injury was observed only for a parental SES index, which was positively associated with total and recreation injuries (odds ratios for the highest versus lowest SES category of 1.9 for total and 2.5 for recreation injuries). Among females, there was some evidence of a positive relationship between SES and injuries, particularly for a neighbourhood-level education measure with total and recreation injuries (odds ratios of 1.7 for total and 2.0 for recreation injuries).

Conclusion

The results suggest that differences related to the measures of SES chosen and the causes of injury under study may both contribute to discrepancies in past research on SES and non-fatal injuries among adolescents. To clarify the potential SES-injury relationship among youth, the findings emphasize a need for a greater understanding of the meaning and relevance of different SES measures for adolescents, and for an exploration of the pathways through which SES may be related to injury risk.

Neighbourhood social and socio-economic composition and injury risks

AIM

To investigate whether social and socio-economic characteristics of the population within a parish influence childhood injury.

METHODS

The study encompasses all children aged 0-15 y living in Stockholm County over the 3-y period 1999-2001 (about 360,000 children per year), grouped into parish of residence (138 parishes). The effect of parish attributes on injury rate were analysed based on three indices (deprivation, socio-economic status and social integration) derived by a factor analysis of 11 characteristics of the parishes' population, each index being split into three levels. Childhood injury resulting in at least one night of hospitalization during the period 1999-2001 was considered (n = 5540) by index, and rate ratios were calculated for 12 injury causes using parishes forming the best level of the index as the reference group.

RESULTS

Higher levels of deprivation negatively influenced pedestrian injury rates, had a protective effect on other traffic-related injuries, and negatively affected some other types of unintentional injuries. Higher concentrations of people with low socio-economic status did not impact on the risk of traffic and fall injuries, but increased that of burns/scalds and cases of poisoning. Parishes with lower levels of social integration had significantly higher rates of bicycle- and moped-related injuries, and also of self-inflicted ones.

CONCLUSION

Compositional characteristics of the population in a residential area affect injury to varying degrees and direction according to type of injury. The underlying mechanisms are likely to be specific to injury type.

Individual and contextual effects in injury morbidity in Barcelona (Spain)

OBJECTIVE

To determine the relationship between socioeconomic level (measured through individual educational level and material deprivation in the areas of residence) and injury morbidity in different age groups and in males as well as in females.

DESIGN

Cross-sectional survey.

SETTING

Barcelona (Spain).

METHODS

The study population included all cases over the age of 19 who, as a result of an injury (motor vehicles injuries, falls, hits and cuts), were admitted to the emergency departments of the six main hospitals of the city during the years 1990-1991. Age- and sex-specific morbidity rates were calculated for each educational level and each cause of injury. The contextual variable included was the proportion of unemployment in each neighbourhood. Multilevel Poisson regression models were fitted.

RESULTS

Morbidity rates were higher in males, in young people and for lower educational levels. Results from the multilevel models show that, at contextual level, neighbourhoods with more unemployment present a higher risk of injuries. At individual level, after adjusting for contextual variables, the risk of sustaining injuries was higher among young men and women for all injury causes except falls among women where the risk was higher in the elderly; among both men and women, the risk of sustaining injury was higher in the population with lower educational level (RR = 1.79, 95% CI = 1.73-1.86 in men; RR = 2.12, 95% CI = 2.04-2.21 in women). This trend was also observed separately for traffic injuries, falls, hits and cuts.

CONCLUSION

Our results provide information about individual and contextual social inequalities in injury morbidity, the highest risks of injury occur in individuals of lower educational level and who reside in the more private neighbourhoods. These results underscore the need to implement injury prevention strategies not only at the individual level, but also to tailor them to the socioeconomic position of the population.

Home accidents in Arab Bedouin children in southern Israel

Home accidents are a major health problem; no data about the specific types of home accidents in the pediatric Bedouin population of southern Israel is available. We sought to delineate the specific types of home accidents in Arab Bedouin children in southern Israel. The study was conducted in a primary care clinic in an Arab Bedouin town in southern Israel. An interview of every patient or parent who presented to the clinic for a home accident in a child from December 2000 until mid November 2001 was conducted. A total of 235 accidents were recorded from 219 patients (153 males and 66 females). The most prevalent injury was burns (85 cases--36.1%) followed by falls (67 cases--28.5%), contusions, (31 cases--13.2%), lacerations (29 cases--12.3%), and nail penetrations (19 cases--8%). Thirteen patients were hospitalized, 6 with burns and 7 due to falls. A total of 209 days of hospitalization were recorded, 195 days due to burn and 14 days due to falls, (p < 0.05). Burn rates were highest in children younger than 2 years of age, 39/57 (68.4%), and an increased risk for burns was significantly correlated to younger age (p < 0.0001). We conclude that in our study population, burns represent the most prevalent home accident and that burns cause a much longer hospital stay than any other type of accident. The risk for burns is correlated to younger age. A burn prevention plan is needed.

Household and neighbourhood risks for injury to 5-14 year old children

Injuries in childhood are strongly related to poverty at the household level and to living in a deprived neighbourhood, but it is not clear whether these effects are independent. In this prospective population study, all injuries to 5-14 year old children living in the city of Norwich, UK, and presented at the hospital Accident and Emergency Department over a 13 month period were recorded (N=3526). Information on the population of resident children and household composition was assembled from the health authority population register. Neighbourhood information was extracted from the census and local surveys. Unadjusted risks were calculated for individual and neighbourhood factors, followed by multilevel modelling in which predictors were included at three levels: individual, enumeration district and social area (neighbourhood). The overall injury rate was 16.44 per 100 children per year. Injury rates between neighbourhoods varied two-fold and were highest in more deprived areas. In the final multilevel model injury risk was related to gender (boys vs. girls OR=1.35), age of child (OR=1.07 per year), number of adults in the household (OR=0.91 per adult), and age gap between child and eldest female (15-24 years vs. 25-34 years, OR=1.15). Injury rates were also related to social area deprivation, although variations in injury rates between neighbourhoods were not wholly explained by deprivation. The adjusted odds ratio between the most and least deprived social areas was 1.35. Excluding less serious injuries did not substantially change the results. The risks were very similar to those found in a previous study of pre-school children, with the same neighbourhoods identified as high and low risk as before. This evidence that neighbourhood factors independently influence injury risk over and above individual and household factors supports the use of area-based policies to reduce injuries in children.

Patient, physician, and community factors affecting referrals to specialists in Ontario, Canada: a population-based, multi-level modelling approach

QUESTION ADDRESSED

This population-based study examines the factors affecting referrals by primary care physicians (PCPs) to specialists.

MATERIALS AND METHODS

Multilevel Poisson models were used to test the impact of patient, physician and community-level variables on the referral rate (the number of office-based specialist referrals per patient by the patient's customary PCP in fiscal year 1997/98). Patients from each of 6972 PCPs with sufficient data in Ontario were examined.

RESULTS

The average patient had 0.56 referrals per year (range 0-61). Referrals were higher at ages 1 and 77 to 78, and among women of childbearing age. Chronic disease variables were strongly correlated with referral rates. Patients in poor neighborhoods had more referrals, because they had more chronic diseases. After controlling for disease, individuals in the top 9% wealthiest neighborhoods had 4% more referrals. Female physicians made 8% more referrals than men. Older physicians referred more because they saw older patients; after controlling for patient age, physician age had no effect. Referrals were 14% higher in cities with medical schools compared with other cities and 12% lower in small towns. However, local specialist supply was unrelated to referral rates.

CONCLUSION

This study improves our understanding of the impact of physician gender and age on referrals. It suggests that community type, not specialist supply, predicts variations in referrals. Lastly, it identifies preferential access to specialists among high-income earners, even within Canada's universal health insurance system. However, this effect is modest, suggesting that the system does provide reasonably equitable access to referrals.

A population-based analysis of socioeconomic status and insurance status and their relationship with pediatric trauma hospitalization and mortality rates

OBJECTIVES

We investigated socioeconomic disparities in injury hospitalization rates and severity-adjusted mortality for pediatric trauma.

METHODS

We used 10 years of pediatric trauma data from Sacramento County, Calif, to compare trauma hospitalization rates, trauma mechanism and severity, and standardized hospital mortality across socioeconomic strata (median household income, proportion of households in poverty, insurance).

RESULTS

Children from lower-socioeconomic status (SES) communities had higher injury hospitalization and mortality rates, and presented more frequently with more lethal mechanisms of injury (pedestrian, firearm), but did not have higher severity-adjusted mortality.

CONCLUSIONS

Higher injury mortality rates among children of lower SES in Sacramento County are explained by a higher incidence of trauma and more fatal mechanisms of injury, not by greater injury severity or poorer inpatient care.

Socioeconomic variation in injury in children and older people: a population based study

OBJECTIVES

To compare hospital admission rates for all causes and specific causes of injury in children and the elderly by a measure of economic deprivation.

STUDY DESIGN

All emergency admissions for Welsh residents from 1997-99 were located to one of 865 electoral tracts, which were grouped into fifths using a measure of socioeconomic deprivation. Standardised admission rates for all ages and 0-14, 15-75, and 75+ year groups for each quintile were calculated with 95% confidence intervals.

RESULTS

There were 90 935 admissions in a population of 2.84 million yielding a crude admission rate of 1601/100 000/year and a standardised rate of 1493/100 000. The ratio of admissions in deprived and affluent areas varied with category of injury and age group. In general, socioeconomic variations in injury rates were much smaller in older people than in children with the exception of pedestrian related injuries where the rates were similar. The largest variations were for injuries sustained in assaults or self inflicted.

CONCLUSIONS

The relationship between socioeconomic position and injury varies by cause and age group. This should be considered when developing area based preventive interventions or monitoring the effectiveness of policies to reduce inequalities in injury occurrence.

Injury inequalities: morbidity and mortality of 0-17 year olds in Israel

BACKGROUND

To determine whether there are inequalities in the incidence of fatal and non-fatal unintentional injuries among Jewish and Arab children in Israel.

METHODS

A nationwide random sample of injured children aged 0-17 attending emergency rooms (ER) during one year was selected (n = 11 058). The number of cases was weighted to 365 days and rates and odds ratios (OR) were calculated. Logistic regression was performed to study the OR of hospitalization in the total population and among Jews and Arabs controlling for independent variables.

RESULTS

The incidence of ER admissions among the Jews was 752.6/10 000 (95% CI: 738.1-767.1), 1.5 times higher than among the Arabs (492.8/10 000, 95% CI: 472.8-512.8). However, the rate of hospitalization was 1.1 times higher among Arabs than among Jews and the mortality rate was 3.2 times higher among Arabs than among Jews.

CONCLUSIONS

The differences in injury rates for fatal and non-fatal injuries may be due to differences in the severity of injuries or in the use of services by the two populations. A study is underway to elucidate this point.

Cross sectional survey of socioeconomic variations in severity and mechanism of childhood injuries in Trent 1992-7

OBJECTIVE

To determine the relation between morbidity from injury and deprivation for different levels of injury severity and for different injury mechanisms for children aged 0-14 years.

DESIGN

Cross sectional survey of routinely collected hospital admission data for injury 1992-7.

SETTING

862 electoral wards in Trent Region.

SUBJECTS

21 587 injury related hospital admissions for children aged 0-4 years and 35 042 admissions for children aged 5-14.

MAIN OUTCOME MEASURES

Rate ratios for hospital admission for all injuries, all injuries involving long bone fracture, and all injuries involving long bone fracture requiring an operation; rate ratios for hospital admission for six types of injury mechanism divided by quintiles of the electoral wards' Townsend scores for deprivation. Rate ratios calculated by Poisson regression, with adjustment for distance from nearest hospital admitting patients with injuries, rurality, ethnicity, and percentage of males in each electoral ward.

RESULTS

Both total number of admissions for injury and admissions for injuries of higher severity increased with increasing socioeconomic deprivation. These gradients were more marked for 0-4 year old children than 5-14 year olds. In terms of injury mechanisms, the steepest socioeconomic gradients (where the rate for the fifth of electoral wards with the highest deprivation scores was > or =3 times that of the fifth with the lowest scores) were for pedestrian injuries (adjusted rate ratio 3.65 (95% confidence interval 2.94 to 4.54)), burns and scalds (adjusted rate ratio 3.49 (2.81 to 4.34)), and poisoning (adjusted rate ratio 2.98 (2.65 to 3.34)).

CONCLUSION

There are steep socioeconomic gradients for injury morbidity including the most common mechanisms of injury. This has implications for targeting injury prevention interventions and resources.

Primary school accident reporting in one education authority

BACKGROUND

Studies have shown a correlation between increased accident rates and levels of deprivation in the community. School accident reporting is one area where an association might be expected.

AIMS

To investigate differences in primary school accident rates in deprived and more affluent wards, in an area managed by one education authority.

METHODS

Statistical analysis of accident form returns for 100 primary schools in one education authority in Wales over a two year period, in conjunction with visits to over one third of school sites.

RESULTS

Accident report rates from schools in deprived wards were three times higher than those from schools in more affluent wards. School visits showed that this discrepancy was attributable primarily to differences in reporting procedures. One third of schools did not report accidents and approximately half did not keep records of minor accidents.

CONCLUSIONS

The association between school accident report rates and deprivation in the community is complex. School accident data from local education authorities may be unreliable for most purposes of collection.