Consensus building on definitions and types of child maltreatment to improve recording and surveillance in Europe: protocol for a multi-sectoral, European, electronic Delphi study.

INTRODUCTION: Child maltreatment (CM) is a complex global public health issue with potentially devastating effects on individuals' physical and mental health and well-being throughout the life course. A lack of uniform definitions hinders attempts to identify, measure, respond to, and prevent CM. The aim of this electronic Delphi (e-Delphi) study is to build consensus on definitions and types of CM for use in surveillance and multi-sectoral research in the 34 countries in the Euro-CAN (Multi-Sectoral Responses to Child Abuse and Neglect in Europe) project (COST Action CA19106). METHODS AND ANALYSIS: The e-Delphi study will consist of a maximum of three rounds conducted using an online data collection platform. A multi-disciplinary expert panel consisting of researchers, child protection professionals (health and social care), police, legal professionals and adult survivors of CM will be purposefully recruited. We will approach approximately 100 experts, with between 50 and 60 of these anticipated to take part. Participants will rate their agreement with a range of statements relating to operational definitions and types of CM, and free-text comments on each of the statements to give further detail about their responses and areas of uncertainty. Consensus has been defined a priori as ≥70% of the panel agreeing or disagreeing with the statement after the final round. The responses to the open-ended questions will be analysed using a 'codebook' approach to thematic analysis, and used to refine the statements between rounds where no consensus is reached. ETHICS AND DISSEMINATION: Ethical approval has been granted from the Cardiff University School of Medicine ethics committee (reference number SMREC22/96). Results will be submitted for publication in a peer-reviewed journal and presented at workshops (including for the participants) and international academic conferences. The Euro-CAN network will also be used to disseminate the results, with results briefings and presentations to key public health and other relevant organisations in the field.

Appraisal of published guidelines in European countries addressing the clinical care of childhood sexual abuse: protocol for a systematic review.

INTRODUCTION: Childhood sexual abuse (CSA) is a global public health problem with potentially severe health and mental health consequences. Healthcare professionals (HCPs) should be familiar with risk factors and potential indicators of CSA, and able to provide appropriate medical management. The WHO issued global guidelines for the clinical care of children with CSA, based on rigorous review of the evidence base. The current systematic review identifies existing CSA guidelines issued by government agencies and academic societies in the European Region and assesses their quality and clarity to illuminate strengths and identify opportunities for improvement. METHODS AND ANALYSIS: This 10-database systematic review will be conducted according to the Centre for Reviews and Dissemination guidelines and will be reported according to The Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. Guidance for HCPs regarding CSA, written by a national governmental agency or academic society of HCPs within 34 COST Action 19106 Network Countries (CANC) and published in peer-reviewed or grey literature between January 2012 and November 2022, is eligible for inclusion. Two independent researchers will search the international literature, screen, review and extract data. Included guidelines will be assessed for completeness and clarity, compared with the WHO 2017/2019 guidelines on CSA, and evaluated for consistency between the CANC guidelines. The Appraisal of Guidelines for Research and Evaluation II tool and Grading of Recommendations Assessment, Development and Evaluation methodology will be used to evaluate CANC guidelines. Descriptive statistics will summarise content similarities and differences between the WHO guidelines and national guidelines; data will be summarised using counts, frequencies, proportions and per cent agreement between country-specific guidelines and the WHO 2017/2019 guidelines. ETHICS AND DISSEMINATION: There are no individuals or protected health information involved and no safety issues identified. Results will be published in a peer-reviewed medical journal. PROSPERO REGISTRATION NUMBER: CRD42022320747.

Fifteen-minute consultation: Bruising in the premobile child.

A bruise in a premobile infant is an uncommon finding and often results in referral to the paediatric or emergency departments, acknowledging the potential for physical abuse in this vulnerable cohort. Our role as clinicians is to undertake a thorough assessment, consider potential differentials and organise appropriate investigations, with involvement of the wider multidisciplinary team. In this article, we use a case vignette to discuss how one would approach a bruise in the premobile infant including the evidence base.

Influence of agents and mechanisms of injury on anatomical burn locations in children <5 years old with a scald.

OBJECTIVE: To demonstrate how the mechanism and agent of injury can influence the anatomical location of a scald. DESIGN: Prospective multicentre cross-sectional study. SETTING: 20 hospital sites across England and Wales including emergency departments, minor injury units and regional burns units. PATIENTS: Children aged 5 years and younger who attended hospital with a scald. MAIN OUTCOME MEASURES: Primary outcome: a descriptive analysis of the mechanism, agent and anatomical location of accidental scalds. Secondary outcome: a comparison of these factors between children with and without child protection (CP) referral. RESULTS: Of 1041 cases of accidental scalds, the most common narrative leading to this injury was a cup or mug of hot beverage being pulled down and scalding the head or trunk (132/1041; 32.9% of cases). Accidental scalds in baths/showers were rare (1.4% of cases). Accidental immersion injuries were mainly distributed on hands and feet (76.7%). There were differences in the presentation between children with accidental scalds and the 103 who were referred for CP assessment; children with scalds caused by hot water in baths/showers were more likely to get referred for CP assessment (p<0.0001), as were those with symmetrically distributed (p<0.0001) and unwitnessed (p=0.007) scalds. CONCLUSIONS: An understanding of the distributions of scalds and its relationship to different mechanisms of injury and causative agents will help clinicians assess scalds in young children, particularly those new to the emergency department who may be unfamiliar with expected scald patterns or with the importance of using appropriate terminology when describing scalds.

Can TEN4 distinguish bruises from abuse, inherited bleeding disorders or accidents?

OBJECTIVE: Does TEN4 categorisation of bruises to the torso, ear or neck or any bruise in <4-month-old children differentiate between abuse, accidents or inherited bleeding disorders (IBDs)? DESIGN: Prospective comparative longitudinal study. SETTING: Community. PATIENTS: Children <6 years old. INTERVENTIONS: The number and location of bruises compared for 2568 data collections from 328 children in the community, 1301 from 106 children with IBD and 342 abuse cases. MAIN OUTCOME MEASURES: Likelihood ratios (LRs) for the number of bruises within the TEN and non-TEN locations for pre-mobile and mobile children: abuse vs accidental injury, IBD vs accident, abuse vs IBD. RESULTS: Any bruise in a pre-mobile child was more likely to be from abuse/IBD than accident. The more bruises a pre-mobile child had, the higher the LR for abuse/IBD vs accident. A single bruise in a TEN location in mobile children was not supportive of abuse/IBD. For mobile children with more than one bruise, including at least one in TEN locations, the LR favouring abuse/IBD increased. Applying TEN4 to collections from abused and accidental group <48 months of age with at least one bruise gave estimated sensitivity of 69% and specificity for abuse of 74%. CONCLUSIONS: These data support further child protection investigations of a positive TEN4 screen in any pre-mobile children with a bruise and in mobile children with more than one bruise. TEN4 did not discriminate between IBD and abuse, thus IBD needs to be excluded in these children. Estimated sensitivity and specificity of TEN4 was appreciably lower than previously reported.

Mixed-methods process evaluation of SafeTea: a multimedia campaign to prevent hot drink scalds in young children and promote burn first aid.

OBJECTIVES: SafeTea is a multifaceted intervention delivered by community practitioners to prevent hot drink scalds to young children and improve parents' knowledge of appropriate burn first aid. We adapted SafeTea for a national multimedia campaign, and present a mixed-methods process evaluation of the campaign. METHODS: We used social media, a website hosting downloadable materials and media publicity to disseminate key messages to parents/caregivers of young children and professionals working with these families across the UK. The SafeTea campaign was launched on National Burns Awareness Day (NBAD), October 2019, and ran for 3 months. Process evaluation measurements included social media metrics, Google Analytics, and quantitative and qualitative results from a survey of professionals who requested hard copies of the materials via the website. RESULTS: Findings were summarised under four themes: 'reach', 'engagement', 'acceptability' and 'impact/behavioural change'. The launch on NBAD generated widespread publicity. The campaign reached a greater number of the target audience than anticipated, with over 400 000 views of the SafeTea educational videos. Parents and professionals engaged with SafeTea and expressed positive opinions of the campaign and materials. SafeTea encouraged parents to consider how to change their behaviours to minimise the risks associated with hot drinks. Reach and engagement steadily declined after the first month due to reduced publicity and social media promotion. CONCLUSION: The SafeTea campaign was successful in terms of reach and engagement. The launch on NBAD was essential for generating media interest. Future campaigns could be shorter, with more funding for additional social media content and promotion.

Head computed tomography in suspected physical abuse: time to rethink?

BACKGROUND: National guidance recommends CT-head for all children <1 year old with suspected physical abuse, and to be considered for those <2 years old to exclude abusive head trauma. OBJECTIVES: To investigate whether this guidance is followed, and the associations between clinical presentation and CT findings, to determine whether guidance could be refined. MATERIALS AND METHODS: A retrospective case note review of all children <2 years old who underwent medical assessment for suspected abuse (2009-2017). Outcome measures were frequency of CT-head, and diagnostic yield of intracranial injury, skull fracture or both. RESULTS: CT-head was undertaken in 60.3% (152/252) of children <12 months old and 7.8% (13/167) of those aged 12-24 months. The diagnostic yield in children who had a CT-head was 27.1% in children <6 months old, 14.3% in those 6-12 months old (p=0.07) and 42.6% (6/13) in those 12-24 months old. For those with head swelling or neurological impairment, it was 84.2% (32/38). In children <12 months old without these clinical features, the estimated prevalence of occult head injury was 6.1% (7/115). The strongest predictors of an abnormal CT-head were swelling to the head (OR 46.7), neurological impairment (OR 20.6) and a low haemoglobin (OR 11.8). CONCLUSION: All children <2 years of age with suspected physical abuse and neurological impairment or head swelling should undergo CT-head. Where the technical skills and the requisite expertise to interpret MRI exist, an MRI scan may be the optimal first-line neuroimaging investigation in infants who are neurologically stable with injuries unrelated to the head to minimise cranial radiation exposure.

Burns and Scalds Assessment Template: standardising clinical assessment of childhood burns in the emergency department.

OBJECTIVES: The Burns and Scalds Assessment Template (BaSAT) is an evidence-based proforma coproduced by researchers and ED staff with the aim of (1) standardising the assessment of children attending ED with a burn, (2) improving documentation and (3) screening for child maltreatment. This study aimed to test whether the BaSAT improved documentation of clinical, contributory and causal factors of children's burns. METHODS: A retrospective before-and-after study compared the extent to which information was recorded for 37 data fields after the BaSAT was introduced in one paediatric ED. Pre-BaSAT, a convenience sample of 50 patient records of children who had a burn was obtained from the hospital electronic database of 2007. The post-BaSAT sample included 50 randomly selected case notes from 2016/2017 that were part of another research project. Fisher's exact test and Mann-Whitney U tests were conducted to test for statistical significance. RESULTS: Pre-BaSAT, documentation of key data fields was poor. Post-BaSAT, this varied less between patients, and median completeness significantly (p<0.001) increased from 44% (IQR 4%-94%) to 96% (IQR 94%-100%). Information on 'screening for maltreatment, referrals to social care and outcome' was poorly recorded pre-BaSAT (median of 4% completed fields) and showed the greatest overall improvement (to 95%, p<0.001). Documentation of domestic violence at home and child's ethnicity improved significantly (p<0.001) post-BaSAT; however, these were still not recorded in 36% and 56% of cases, respectively. CONCLUSION: Introduction of the BaSAT significantly improved and standardised the key clinical data routinely recorded for children attending ED with a burn.

Validation of the PredAHT-2 prediction tool for abusive head trauma.

OBJECTIVE: The validated Predicting Abusive Head Trauma (PredAHT) clinical prediction tool calculates the probability of abusive head trauma (AHT) in children <3 years of age who have sustained intracranial injuries (ICIs) identified on neuroimaging, based on combinations of six clinical features: head/neck bruising, seizures, apnoea, rib fracture, long bone fracture and retinal haemorrhages. PredAHT version 2 enables a probability calculation when information regarding any of the six features is absent. We aimed to externally validate PredAHT-2 in an Australian/New Zealand population. METHODS: This is a secondary analysis of a prospective multicentre study of paediatric head injuries conducted between April 2011 and November 2014. We extracted data on patients with possible AHT at five tertiary paediatric centres and included all children <3 years of age admitted to hospital who had sustained ICI identified on neuroimaging. We assigned cases as positive for AHT, negative for AHT or having indeterminate outcome following multidisciplinary review. The estimated probability of AHT for each case was calculated using PredAHT-2, blinded to outcome. Tool performance measures were calculated, with 95% CIs. RESULTS: Of 87 ICI cases, 27 (31%) were positive for AHT; 45 (52%) were negative for AHT and 15 (17%) had indeterminate outcome. Using a probability cut-off of 50%, excluding indeterminate cases, PredAHT-2 had a sensitivity of 74% (95% CI 54% t o89%) and a specificity of 87% (95% CI 73% to 95%) for AHT. Positive predictive value was 77% (95% CI 56% to 91%), negative predictive value was 85% (95% CI 71% to 94%) and the area under the curve was 0.80 (95% CI 0.68 to 0.92). CONCLUSION: PredAHT-2 demonstrated reasonably high point sensitivity and specificity when externally validated in an Australian/New Zealand population. Performance was similar to that in the original validation study. TRIAL REGISTRATION NUMBER: ACTRN12614000463673.

Feasibility of Safe-Tea: a parent-targeted intervention to prevent hot drink scalds in preschool children.

OBJECTIVE: Despite the high prevalence of preventable hot drink scalds in preschool children, there is a paucity of research on effective prevention interventions and a serious need to improve parents' knowledge of first aid. This study investigates the feasibility of 'Safe-Tea', an innovative multifaceted community-based intervention delivered by early-years practitioners. METHODS: 'Safe-Tea' was implemented at Childcare, Stay&Play and Home Visit settings in areas of deprivation in Cardiff, UK. A mixed-methods approach was used, including preintervention and postintervention parent questionnaires and focus groups with parents and practitioners to test the acceptability, practicality and ability of staff to deliver the intervention, and parents' knowledge and understanding. RESULTS: Intervention materials, activities and messages were well received and understood by both parents and community practitioners. Interactive and visual methods of communication requiring little to no reading were most acceptable. Parents' understanding of the risk of hot drink scalds in preschool children and knowledge of appropriate first aid improved postintervention. Parents knew at baseline that they 'should' keep hot drinks out of reach. Focus group discussions after intervention revealed improved understanding of likelihood and severity of scald injury to children, which increased vigilance. Parents gained confidence to correct the behaviours of others at home and pass on first aid messages. CONCLUSION: This feasibility study is a vital step towards the development of a robust, evidence-based behaviour change intervention model. Work is underway to refine intervention materials based on improvements suggested by parents, and test these more widely in communities across the UK.

Incidence of medically attended paediatric burns across the UK.

OBJECTIVE: Childhood burns represent a burden on health services, yet the full extent of the problem is difficult to quantify. We estimated the annual UK incidence from primary care (PC), emergency attendances (EA), hospital admissions (HA) and deaths. METHODS: The population was children (0-15 years), across England, Wales, Scotland and Northern Ireland (NI), with medically attended burns 2013-2015. Routinely collected data sources included PC attendances from Clinical Practice Research Datalink 2013-2015), EAs from Paediatric Emergency Research in the United Kingdom and Ireland (PERUKI, 2014) and National Health Services Wales Informatics Services, HAs from Hospital Episode Statistics, National Services Scotland and Social Services and Public Safety (2014), and mortality from the Office for National Statistics, National Records of Scotland and NI Statistics and Research Agency 2013-2015. The population denominators were based on Office for National Statistics mid-year population estimates. RESULTS: The annual PC burns attendance was 16.1/10 000 persons at risk (95% CI 15.6 to 16.6); EAs were 35.1/10 000 persons at risk (95% CI 34.7 to 35.5) in England and 28.9 (95% CI 27.5 to 30.3) in Wales. HAs ranged from 6.0/10 000 person at risk (95% CI 5.9 to 6.2) in England to 3.1 in Wales and Scotland (95% CI 2.7 to 3.8 and 2.7 to 3.5, respectively) and 2.8 (95% CI 2.4 to 3.4) in NI. In England, Wales and Scotland, 75% of HAs were aged <5 years. Mortality was low with 0.1/1 000 000 persons at risk (95% CI 0.06 to 0.2). CONCLUSIONS: With an estimated 19 574 PC attendances, 37 703 EAs (England and Wales only), 6639 HAs and 1-6 childhood deaths annually, there is an urgent need to improve UK childhood burns prevention.

Contact burns: the influence of agents and mechanisms of injury on anatomical burn locations in children <5 years old and associations with child protection referrals.

OBJECTIVE: To identify how causative agents and mechanisms of injury influence the location of an accidental contact burn in children and whether these factors differ in cases referred for child protection (CP) assessment. DESIGN: Prospective multicentre cross-sectional study. SETTING: 20 hospital sites across England and Wales, including: emergency departments, minor injury units and regional burn units. PATIENTS: Children less than 5 years old who attended hospital for a contact burn (August 2015 to September 2018). MAIN OUTCOME MEASURES: Location of burns with respect to agent and mechanism for accidental contact burns. Secondary outcome: mechanism, agent and location of burns referred for CP assessment. RESULTS: 816 accidental burns and 92 referrals for CP assessment. The most common for accidental burns: mechanism was reaching while stationary (68%, 553/816), agent was oven (24.5%, 200/816) and site was the hand (69.2%, 565/816). Burns to head and trunk were rare at 3.7% (30/816). The data enabled a tabulation of the locations of burns as predicted by agent and mechanism of injury. The location of the burn was most strongly influenced by mechanism.Burns from irons (p<0.01), caused by mechanisms independent of the child (p=0.01), unwitnessed burns (p<0.001) and burns to the head and trunk (p<0.001) were significantly more common among the children referred for CP assessment. CONCLUSIONS: By overlaying agent, mechanism and site it was possible to tabulate and quantify simple narratives of accidental contact burns in population of young children. These findings have the potential to aid clinicians in recognising accidental contact burns.

Mapping the evidence about what works to safely reduce the entry of children and young people into statutory care: a systematic scoping review protocol.

INTRODUCTION: The increasing number of children and young people entering statutory care in the UK is a significant social, health and educational priority. Development of effective approaches to safely reduce this number remains a complex but critical issue. Despite a proliferation in interventions, evidence summaries are limited. The present protocol outlines a scoping review of research evidence to identify what works in safely reducing the number of children and young people (aged ≤18 years) entering statutory social care. The mapping of evidence gaps, clusters and uncertainties will inform the research programme of the newly funded Department for Education's What Works Centre for Children's Social Care. METHODS AND ANALYSIS: The review uses Arksey and O'Malley's scoping review methodology. Electronic database and website searches will identify studies targeting reduction of care entry, reduction of care re-entry and increase in post-care reunification. Supplementary searching techniques will include international expert consultation. Abstracts and full-text studies will be independently screened by two reviewers. Ten per cent of data abstraction will be independently conducted by two reviewers, with the remainder being extracted and then verified by a second reviewer. Descriptive numerical summaries and a thematic qualitative synthesis will be generated. Evidence will be synthesised according to primary outcome, intervention point (mapped across socioecological domains) and the realist EMMIE categorisation of evidence type (Effectiveness; Mechanisms of change; Moderators; Implementation; Economic evaluation). ETHICS AND DISSEMINATION: Outputs will be a conceptual evidence map, a descriptive table quantitatively summarising evidence and a qualitative narrative summary. Results will be disseminated through a peer-reviewed publication, conference presentations, the What Works Centre website, and knowledge translation events with policy-makers and practitioners. Findings will inform the primary research programme of the What Works Centre for Children's Social Care and the subsequent suite of systematic reviews to be conducted by the Centre in this substantive area.

Fifteen-minute consultation: Childhood burns: inflicted, neglect or accidental.

Burns are a relatively common injury in children accounting for over 50 000 emergency department attendances each year. An estimated 1 in 10 of these are due to maltreatment. These may present in the form of physical abuse or neglect with a reported ratio of 1:9. A burn associated with maltreatment may be a marker for future abuse or neglect and it is paramount that concerns are identified and addressed at the initial visit. Paediatricians need to be confident to identify safeguarding concerns specific to childhood burns and investigate accordingly. In this review, key variables that may aid in differentiating maltreatment from accidental burns are discussed in a case-based format, utilising up-to-date evidence to support the recommendations. Despite a proportion of burns resulting from physical abuse, the rate of child protection investigations in these patients are significantly lower than for children who present with other forms of physical injuries despite a similar proportion of positive findings. Our objective is to review the available evidence to support the safe assessment and management of children presenting with scalds or contact burns.

External Validation of the PediBIRN Clinical Prediction Rule for Abusive Head Trauma.

BACKGROUND AND OBJECTIVES: A 4-variable abusive head trauma (AHT) clinical prediction rule (CPR) for use in the PICU was derived and validated for children <3 years of age by the Pediatric Brain Injury Research Network (PediBIRN). We aimed to externally validate PediBIRN as designed (PICU only) as well as using broader inclusion criteria (admitted children with head injuries). METHODS: This was a secondary analysis of a prospective multicenter study of pediatric head injuries at 5 Australian and New Zealand tertiary pediatric centers. Possible AHT was identified by clinician suspicion, epidemiology codes, or a high-risk group (<3 years of age, admitted, abnormal neuroimaging results). At 1 center, we additionally reviewed head injuries in the forensic database. We designated patients as positive for AHT, negative for AHT, or having indeterminate outcome after multidisciplinary review and applied the PediBIRN CPR, blinded to outcome, to PICU admissions only, and any head injury admissions. CPR accuracy was calculated by using 95% confidence intervals. RESULTS: One hundred and forty-one patients were admitted with abnormal neuroimaging results. Twenty-eight (20%) were positive for AHT, 94 (67%) were negative for AHT, and 19 (13%) had indeterminate outcome. Excluding indeterminate cases, in the PICU (n = 28), the CPR was 100% (75%-100%) sensitive and 11% (0%-48%) specific; in all admitted patients (n = 141), sensitivity was 96% (82%-100%) and specificity of 43% (32%-53%). CONCLUSIONS: This validation revealed high sensitivity and low specificity for PICU patients. Specificity was improved but moderate in a broader group of admitted head injury patients.

Clinical prediction rules for abusive head trauma: a systematic review.

OBJECTIVE: Misdiagnosis of abusive head trauma (AHT) has serious consequences for children and families. This systematic review identifies and compares clinical prediction rules (CPredRs) assisting clinicians in assessing suspected AHT. DESIGN: We searched MEDLINE, Embase, PubMed and Cochrane databases (January 1996 to August 2016). Externally validated CPredRs focusing on the detection of AHT in the clinical setting were included. RESULTS: Of 110 potential articles identified, three studies met the inclusion criteria: the Pediatric Brain Injury Research Network (PediBIRN) 4-Variable AHT CPredR, the Predicting Abusive Head Trauma (PredAHT) tool and the Pittsburgh Infant Brain Injury Score (PIBIS). The CPredRs were designed for different populations and purposes: PediBIRN: intensive care unit admissions (<3 years) with head injury, to inform early decisions to launch or forego an evaluation for abuse (sensitivity 0.96); PredAHT: hospital admissions (<3 years) with intracranial injury, to assist clinicians in discussions with child abuse specialists (sensitivity 0.72); and PIBIS: well-appearing children (<1 year) in the emergency department with no history of trauma, temperature <38.3°C, and ≥1 symptom associated with high risk of AHT, to determine the need for a head CT scan (sensitivity 0.93). There was little overlap between the predictive variables. CONCLUSION: Three CPredRs for AHT were relevant at different stages in the diagnostic process. None of the CPredRs aimed to diagnose AHT but to act as aids/prompts to clinicians to seek further clinical, social or forensic information. None were widely validated in multiple settings. To assess safety and effectiveness in clinical practice, impact analyses are required and recommended.

Abusive head trauma and the triad: a critique on behalf of RCPCH of 'Traumatic shaking: the role of the triad in medical investigations of suspected traumatic shaking'.

The Swedish Agency for Health Technology Assessment and Assessment of Social Services (SBU) has recently published what they purported to be a systematic review of the literature on 'isolated traumatic shaking' in infants, concluding that 'there is limited evidence that the so-called triad (encephalopathy, subdural haemorrhage, retinal haemorrhage) and therefore its components can be associated with traumatic shaking'. This flawed report, from a national body, demands a robust response. The conclusions of the original report have the potential to undermine medico-legal practice. We have conducted a critique of the methodology used in the SBU review and have found it to be flawed, to the extent that children's lives may be put at risk. Thus, we call on this review to be withdrawn or to be subjected to international scrutiny.

Childhood bruising distribution observed from eight mechanisms of unintentional injury.

OBJECTIVE: To inform the assessment of described mechanisms of bruising in children. DESIGN: Prospective cross-sectional study. SETTING: The emergency department, and children in the local community. PATIENTS: Children aged 0-13 years with bruises from unintentional injuries. EXCLUSIONS: bleeding disorder, medication affecting coagulation or child protection concerns. INTERVENTIONS: Injury incidents were categorised into one of eight causal mechanisms (fall from<1 m, 1-2 m, fall from standing height or less and hitting an object during fall, stairs or impact, crush, sports or motor vehicle collision). MAIN OUTCOME MEASURES: Location, number and mechanism of bruising for each injury mechanism. RESULTS: 372 children had 559 injury incidents, resulting in 693 bruises; 85.2% of children were walking independently, with impact injuries and fall from standing height (including hitting an object) being the predominant mechanisms. A single bruise was observed in 81.7% of all incidents. Stair falls resulted in ≥3 bruises only with falls involving ≥10 steps (6/16). Bruising was rarely observed on the buttocks, upper arm, back of legs or feet. No bruises were seen in this dataset on ears, neck or genitalia. Petechial bruising was only noted in 1/293 unintentional incidents, involving a high-impact injury in a school-aged child. CONCLUSION: These findings have the potential to aid an assessment of the plausibility of the explanation given for a child with bruising. Certain bruise distributions were rarely observed, namely multiple bruises from a single mechanism, petechiae and bruising to the ears, neck or genitalia.