Arturo Gonzalez-Izquierdo

Child maltreatment: variation in trends and policies in six developed countries

We explored trends in six developed countries in three types of indicators of child maltreatment for children younger than 11 years, since the inception of modern child protection systems in the 1970s. Despite several policy initiatives for child protection, we recorded no consistent evidence for a decrease in all types of indicators of child maltreatment. We noted falling rates of violent death in a few age and country groups, but these decreases coincided with reductions in admissions to hospital for maltreatment-related injury only in Sweden and Manitoba (Canada). One or more child protection agency indicators increased in five of six countries, particularly in infants, possibly as a result of early intervention policies. Comparisons of mean rates between countries showed five-fold to ten-fold differences in rates of agency indicators, but less than two-fold variation in violent deaths or maltreatment-related injury, apart from high rates of violent child death in the USA. These analyses draw attention to the need for robust research to establish whether the high and rising rates of agency contacts and out-of-home care in some settings are effectively reducing child maltreatment.

Variation in recording of child maltreatment in administrative records of hospital admissions for injury in England, 1997–2009

Background Information on variation in the recording of child maltreatment in administrative healthcare data can help to improve recognition and ensure that services are able to respond appropriately. Objective To examine variation in the recording of child maltreatment and related diagnoses. Design Cross-sectional analyses of administrative healthcare records (Hospital Episode Statistics). Setting and participants Acute injury admissions to the National Health Service in England of children under 5 years of age (1997–2009). Outcome measure Annual incidence of admission for injury recorded by International Classifications of Diseases 10 codes for maltreatment syndrome (child abuse or neglect) or maltreatment-related features (assault, undetermined cause or adverse social circumstances). Proportion of all admissions for injury coded for maltreatment syndrome or maltreatment-related features. Results From 1997 to 2009, the annual incidence of injury admissions coded for maltreatment syndrome declined in infants and in 1–3-year-old children while admissions coded for maltreatment-related features increased in all age groups. The combined incidence of these categories remained stable. Overall, 2.6% of injury admissions in infants, and 0.4–0.6% in older age groups, had maltreatment syndrome recorded. This prevalence more than doubled when maltreatment-related codes were added (6.4% in infants, 1.5–2.1% in older age groups). Conclusion Despite a shift from maltreatment syndrome to codes for maltreatment-related features, the overall burden has remained stable. In combination, the cluster of codes related to maltreatment identify children likely to meet thresholds for suspecting or considering maltreatment and taking further action, as recommended in recent National Institute of Health and Clinical Excellence guidance, and indicate a considerable burden to which hospitals should respond.

Neonatal drug withdrawal syndrome: cross-country comparison using hospital administrative data in England, the USA, Western Australia and Ontario, Canada

Objectives We determined trends over time in the prevalence of neonatal drug withdrawal syndrome (NWS) in England compared with that reported in the USA, Western (W) Australia and Ontario, Canada. We also examined variation in prevalence of NWS according to maternal age, birth weight and across the English NHS by hospital trusts. Design and setting Retrospective study using national hospital administrative data (Hospital Episode Statistics) for the NHS in England between 1997 and 2011. NWS was identified using international classification of disease codes in hospital admission records. We searched the research literature and contacted researchers to identify studies reporting trends in the prevalence of NWS. Main outcome measures Prevalence of NWS by calendar year per 1000 live births for each country/state. For births in England, prevalence by maternal age group and birth weight group. Prevalence by NHS trust and region at birth, and funnel plot to show outlying English NHS hospital trusts (>3 SD of mean prevalence). Main results Mean prevalence rates of recorded NWS increased in all four countries. Rates stabilised in England and W. Australia from the early 2000s and rose steeply in the USA and Ontario during the late 2000s. The most recent prevalence rates were 2.7/1000 live births in England (2011; 1544 cases); 2.7/1000 in W. Australia (2009); 3.6/1000 in the USA (2009) and 5.1/1000 in Ontario (2011). The highest prevalence in England was among babies born to mothers aged 25–34 years at delivery and among babies born with low birth weight (1500–2500 g). In England in 2011, 8.6% of hospital trusts had a recorded prevalence outside 3 SD of the overall average (7% above, 1% below). The North East region of England had the highest recorded prevalence of NWS. Conclusions Although recorded NWS is stable in England and W. Australia, rising rates in the USA and Ontario may reflect better recognition and/or increased use of prescribed opiate analgesics and highlight the need for surveillance. The extent to which different prevalence rates by hospital trust reflect variation in occurrence, recognition or recording requires further investigation.

Comparative indicators for cancer network management in England: availability, characteristics and presentation.

BackgroundIn 2000, the national cancer plan for England created 34 cancer networks, new organisational structures to coordinate services across populations varying between a half and three million people. We investigated the availability of data sets reflecting measures of structure, process and outcome that could be used to support network management.MethodsWe investigated the properties of national data sets relating to four common cancers – breast, colorectal, lung and prostate. We reviewed the availability and completeness of these data sets, identified leading items within each set and put them into tables of the 34 cancer networks. We also investigated methods of presentation.ResultsAcute Hospitals Portfolio and the National Cancer Peer Review recorded structural characteristics at hospital and cancer service level. Process measures included Hospital Episode Statistics, recording admissions, and Cancer Waiting List data. Patient outcome measures included the National Survey: Cancer Patients, and Cancer Survival, drawn from cancer registration.ConclusionWhile not as yet used together in practice, comparative indicators are available within the National Health Service in England for use in performance assessment by cancer networks.

Violence, self-harm and drug or alcohol misuse in adolescents admitted to hospitals in England for injury: a retrospective cohort study

Objectives Of adolescents in the general population in England, we aimed to determine (1) the proportion that has an emergency admission to hospital for injury related to adversity (violence, self-harm or drug or alcohol misuse) and (2) the risk of recurrent emergency admissions for injury in adolescents admitted with adversity-related injury compared with those admitted with accident-related injury only. Design We used longitudinally linked administrative hospital data (Hospital Episode Statistics) to identify participants aged 10–19 years with emergency admissions for injury (including day cases lasting more than 4 h) in England in 1998–2011. We used the Office for National Statistics mid-year estimates for population denominators. Results Approximately 4.3% (n=141 248) of adolescents in the general population (n=3 254 046) had one or more emergency admissions for adversity-related injury (girls 4.6%, boys 4.1%), accounting for 50% of all emergency admissions for injury in girls and 29.1% in boys. Admissions for self-harm or drug or alcohol misuse commonly occurred in the same girls and boys. Recurrent emergency admissions for injury were more common in adolescents with adversity-related injury (girls 17.3%, boys 16.5%) than in those with accident-related injury only (girls 4.7%, boys 7.4%), particularly for adolescents with adversity-related injury related to multiple types of adversity (girls 21.1%, boys 24.2%). Conclusions Hospital-based interventions should be developed to reduce the risk of future injury in adolescents admitted for adversity-related injury.

Identifying possible false matches in anonymized hospital administrative data without patient identifiers

OBJECTIVE To identify data linkage errors in the form of possible false matches, where two patients appear to share the same unique identification number. DATA SOURCE Hospital Episode Statistics (HES) in England, United Kingdom. STUDY DESIGN Data on births and re-admissions for infants (April 1, 2011 to March 31, 2012; age 0-1 year) and adolescents (April 1, 2004 to March 31, 2011; age 10-19 years). DATA COLLECTION/EXTRACTION METHODS Hospital records pseudo-anonymized using an algorithm designed to link multiple records belonging to the same person. Six implausible clinical scenarios were considered possible false matches: multiple births sharing HESID, re-admission after death, two birth episodes sharing HESID, simultaneous admission at different hospitals, infant episodes coded as deliveries, and adolescent episodes coded as births. PRINCIPAL FINDINGS Among 507,778 infants, possible false matches were relatively rare (n = 433, 0.1 percent). The most common scenario (simultaneous admission at two hospitals, n = 324) was more likely for infants with missing data, those born preterm, and for Asian infants. Among adolescents, this scenario (n = 320) was more common for males, younger patients, the Mixed ethnic group, and those re-admitted more frequently. CONCLUSIONS Researchers can identify clinically implausible scenarios and patients affected, at the data cleaning stage, to mitigate the impact of possible linkage errors.

10-y risks of death and emergency re-admission in adolescents hospitalised with violent, drug- or alcohol-related, or self-inflicted injury: a population-based cohort study

Background Hospitalisation for adversity-related injury (violent, drug/alcohol-related, or self-inflicted injury) has been described as a “teachable moment”, when intervention may reduce risks of further harm. Which adolescents are likely to benefit most from intervention strongly depends on their long-term risks of harm. We compared 10-y risks of mortality and re-admission after adversity-related injury with risks after accident-related injury. Methods and Findings We analysed National Health Service admissions data for England (1 April 1997–31 March 2012) for 10–19 y olds with emergency admissions for adversity-related injury (violent, drug/alcohol-related, or self-inflicted injury; n = 333,009) or for accident-related injury (n = 649,818). We used Kaplan–Meier estimates and Cox regression to estimate and compare 10-y post-discharge risks of death and emergency re-admission. Among adolescents discharged after adversity-related injury, one in 137 girls and one in 64 boys died within 10 y, and 54.2% of girls and 40.5% of boys had an emergency re-admission, with rates being highest for 18–19 y olds. Risks of death were higher than in adolescents discharged after accident-related injury (girls: age-adjusted hazard ratio 1.61, 95% CI 1.43–1.82; boys: 2.13, 95% CI 1.98–2.29), as were risks of re-admission (girls: 1.76, 95% CI 1.74–1.79; boys: 1.41, 95% CI 1.39–1.43). Risks of death and re-admission were increased after all combinations of violent, drug/alcohol-related, and self-inflicted injury, but particularly after any drug/alcohol-related or self-inflicted injury (i.e., with/without violent injury), for which age-adjusted hazard ratios for death in boys ranged from 1.67 to 5.35, compared with 1.25 following violent injury alone (girls: 1.09 to 3.25, compared with 1.27). The main limitation of the study was under-recording of adversity-related injuries and misclassification of these cases as accident-related injuries. This misclassification would attenuate the relative risks of death and re-admission for adversity-related compared with accident-related injury. Conclusions Adolescents discharged after an admission for violent, drug/alcohol-related, or self-inflicted injury have increased risks of subsequent harm up to a decade later. Introduction of preventive strategies for reducing subsequent harm after admission should be considered for all types of adversity-related injury, particularly for older adolescents.

Maltreatment or violence-related injury in children and adolescents admitted to the NHS: comparison of trends in England and Scotland between 2005 and 2011

Objective Legislation to safeguard children from maltreatment by carers or violence by others was advanced in England and Scotland around 2004–2005 and resulted in different policies and services. We examined whether subsequent trends in injury admissions to hospital related to maltreatment or violence varied between the two countries. Setting and participants We analysed rates of all unplanned injury admission to National Health Service (NHS) hospitals in England and Scotland between 2005 and 2011 for children and adolescents aged less than 19 years. Outcomes We compared incidence trends for maltreatment or violence-related (MVR) injury and adjusted rate differences between 2005 and 2011 using Poisson or negative binomial regression models to adjust for seasonal effects and secular trends in non-MVR injury. Infants, children 1–10 years and adolescents 11–18 years were analysed separately. Results In 2005, MVR rates were similar in England and Scotland for infants and 1–10-year-olds, but almost twice as high in Scotland for 11–18-year-olds. MVR rates for infants increased by similar amounts in both countries, in line with rising non-MVR rates in England but contrary to declines in Scotland. Among 1–10-year-olds, MVR rates increased in England and declined in Scotland, in line with increasing non-MVR rates in England and declining rates in Scotland. Among 11–18-year-olds, MVR rates declined more steeply in Scotland than in England along with declines in non-MVR trends. Conclusions Diverging trends in England and Scotland may reflect true changes in the occurrence of MVR injury or differences in the way services recognise and respond to these children, record such injuries or a combination of these factors. Further linkage of data from surveys and services for child maltreatment and violence could help distinguish the impact of policies.

Time-trends in rates of hospital admission of adolescents for violent, self-inflicted or drug/alcohol-related injury in England and Scotland, 2005-11: population-based analysis

Background Incidence of emergency admissions for violent injury in 10- to 18-year olds decreased in England and Scotland between 2005 and 2011, but more steeply in Scotland. To generate hypotheses about causes of these differences, we determined whether trends were consistent across admissions for three common types of adversity-related injury (violent, self-inflicted and drug/alcohol-related). Methods Emergency admissions to NHS hospitals were captured using Hospital Episode Statistics and Scottish Morbidity Records. Adversity-related injury was defined using ICD-10 codes. Analyses were stratified by sex/age groups (10-12, 13-15 and 16-18 years) and adjusted for background trends in admissions for injury. Results During 2005-11, rates declined in all sex/age groups in Scotland (reductions adjusted for background trends ranged from -22.0 to -103.7/100 000) and in girls and boys aged <16 years in England (adjusted reductions -12.0 to -49.9/100 000). However, these rates increased in England for both sexes aged 16-18 years (adjusted increases, girls 71.8/100 000; boys 28.0/100 000). However, throughout 2005-11 overall rates remained relatively similar in England and Scotland for both sexes aged <16 years, and remained higher in Scotland for both sexes aged 16-18 years. Conclusions A greater decline in the rates of emergency admissions for adversity-related injury for adolescents in Scotland compared with England could signal more effective policies in Scotland for reducing violence, self-harm, or drug/alcohol misuse, particularly for 16 to 18-year olds.

Risk of maltreatment-related injury: a cross-sectional study of children under five years old admitted to hospital with a head or neck injury or fracture.

Objectives To determine the predictive value and sensitivity of demographic features and injuries (indicators) for maltreatment-related codes in hospital discharge records of children admitted with a head or neck injury or fracture. Methods Study design: Population-based, cross sectional study. Setting: NHS hospitals in England. Subjects: Children under five years old admitted acutely to hospital with head or neck injury or fracture. Data source: Hospital Episodes Statistics, 1997 to 2009. Main outcome measure: Maltreatment-related injury admissions, defined by ICD10 codes, were used to calculate for each indicator (demographic feature and/or type of injury): i) the predictive value (proportion of injury admissions that were maltreatment-related); ii) sensitivity (proportion of all maltreatment-related injury admissions with the indicator). Results Of 260,294 childhood admissions for fracture or head or neck injury, 3.2% (8,337) were maltreatment-related. With increasing age of the child, the predictive value for maltreatment-related injury declined but sensitivity increased. Half of the maltreatment-related admissions occurred in children older than one year, and 63% occurred in children with head injuries without fractures or intracranial injury. Conclusions Highly predictive injuries accounted for very few maltreatment-related admissions. Protocols that focus on high-risk injuries may miss the majority of maltreated children.