Examination of validity of identifying congenital heart disease from hospital discharge data without a gold standard: Using a data linkage approach.

BACKGROUND: Administrative health data has been used extensively to examine congenital heart disease (CHD). However, the accuracy and completeness of these data must be assessed. OBJECTIVES: To use data linkage of multiple administrative data sources to examine the validity of identifying CHD cases recorded in hospital discharge data. METHODS: We identified all liveborn infants born 2013-2017 in New South Wales, Australia with a CHD diagnosis up to age one, recorded in hospital discharge data. Using record linkage to multiple data sources, the diagnosis of CHD was compared with five reference standards: (i) multiple hospital admissions containing CHD diagnosis; (ii) receiving a cardiac procedure; (iii) CHD diagnosis in the Register of Congenital Conditions; (iv) cardiac-related outpatient health service recorded; and/or (v) cardiac-related cause of death. Positive predictive values (PPV) comparing CHD diagnosis with the reference standards were estimated by CHD severity and for specific phenotypes. RESULTS: Of 485,239 liveborn infants, there were 4043 infants with a CHD diagnosis identified in hospital discharge data (8.3 per 1000 live births). The PPV for any CHD identified in any of the five methods was 62.8% (95% confidence interval [CI] 60.9, 64.8), with PPV higher for severe CHD at 94.1% (95% CI 88.2, 100). Infant characteristics associated with higher PPVs included lower birthweight, presence of a syndrome or non-cardiac congenital anomaly, born to mothers aged <20 years and residing in disadvantaged areas. CONCLUSION: Using data linkage of multiple datasets is a novel and cost-effective method to examine the validity of CHD diagnoses recorded in one dataset. These results can be incorporated into bias analyses in future studies of CHD.

Outpatient encounters, continuity of care, and unplanned hospital care for children and young people with cerebral palsy.

AIM: To describe the relationships between outpatient encounters, continuity of care, and unplanned hospital care in children/young people with cerebral palsy (CP). METHOD: In this population-based data-linkage cohort study we included children/young people with CP identified in the New South Wales/Australian Capital Territory CP Register (birth years 1994-2018). We measured the frequency of outpatient encounters and unplanned hospital care, defined as presentations to emergency departments and/or urgent hospital admissions (2015-2020). Continuity of outpatient care was measured using the Usual Provider of Care Index (UPCI). RESULTS: Of 3267 children/young people with CP, most (n = 2738, 83.8%, 57.6% male) had one or more outpatient encounters (123 463 total encounters, median six outpatient encounters per year during childhood). High UPCI was more common in children/young people with mild CP (Gross Motor Function Classification System levels I-III, with no epilepsy or no intellectual disability), residing in metropolitan and areas of least socioeconomic disadvantage. Low UPCI was associated with four or more emergency department presentations (adjusted odds ratio [aOR] 2.34; 95% confidence interval [CI] 1.71-3.19) and one or more urgent hospital admissions (aOR 2.02; 95% CI 1.57-2.61). INTERPRETATION: Children/young people with CP require frequent outpatient services. Improving continuity of care, particularly for those residing in regional/remote areas, may decrease need for unplanned hospital care.

Assessing the relationship between psychosocial risk and pregnancy outcomes using the perinatal integrated psychosocial assessment (PIPA) tool.

BACKGROUND: The Perinatal Integrated Psychosocial Assessment (PIPA) tool screens for anxiety, depression, and psychosocial factors in pregnancy. We aimed to assess the association between PIPA-determined psychosocial risk and obstetric and neonatal outcomes. METHODS: Cohort study of all pregnant women who gave birth at ≥20 weeks of gestation in 2017-2019 at a tertiary maternity hospital in, Sydney, Australia. Women completed PIPA at their first antenatal visit and were assigned a PIPA risk category. At-risk women were reviewed and referred for support. The association between PIPA risk category and obstetric and neonatal outcomes was evaluated using multivariable logistic regression adjusting for sociodemographic and pregnancy factors. RESULTS: In all, 5969 women completed PIPA; 71.4% were assessed no/low risk, 17.5% medium risk, and 11.1% medium-high/high risk. Compared with no/low-risk women, medium-high/high-risk women were more likely to remain in hospital for >72 hours (aOR 1.47 [95% CI 1.33-1.64]); to not be breastfeeding at discharge (aOR 1.77 [95% CI 1.20-2.61]); to have their infants experience birth complications (aOR 1.24 [95% CI 1.03-1.50]); and to be admitted to the NICU (aOR 1.63 [95% CI 1.26-2.11]). There was a modest increase in odds of cesarean birth (aOR 1.12 [95% CI 1.00-1.27]), and no association with preterm birth or low birthweight. The risk of adverse outcomes disappeared for medium-high/high-risk women referred for support. CONCLUSIONS: The PIPA tool identified one in 10 women at high psychosocial risk with increased risk of adverse obstetric and neonatal outcomes. Adverse outcomes were attenuated for high-risk women who were referred for extra support, suggesting that psychosocial review and referral for high-risk women may reduce the risk of adverse obstetric and neonatal outcomes.

Adenotonsillectomy and adenoidectomy in children: The impact of timing of surgery and post-operative outcomes.

AIM: To investigate the impact of adenotonsillectomy (ADT) and adenoidectomy (AD) on child health and evaluated their post-operative complications. METHODS: We included all children aged <16 years undergoing ADT (tonsillectomy ± adenoidectomy) or AD in New South Wales, Australia, 2008-2017. Health information was obtained from administrative hospitalisation data. Rates of post-operative complications and reoperation were evaluated using generalised estimating equations and Kaplan-Meier methods, respectively. RESULTS: Out of 156 500 included children, 112 361 had ADT and 44 139 had AD. Population rates increased during 2008-2017 (ADT: 68-79 per 10 000 children; AD: 25-34 per 10 000), and children were increasingly operated on at a younger age. Overall, 7262 (6.5%) and 1276 (2.9%) children had post-operative complications (mostly haemorrhage), and 4320 (3.8%) and 5394 (12.2%) required reoperation, following ADT and AD, respectively. Complication rates were highest among children aged 0-1 years, lowest for those 2-5 years and increased with age thereafter. Three-year reoperation rates for children aged 0-1 years were 9.0% and 25.9% following ADT and AD, respectively, decreasing thereafter to 0.5% and 2.1% in children aged 12-13 years. CONCLUSIONS: ADT and AD in Australian children have both increased in frequency and are being done at a younger age. Post-operative complications and reoperation rates highlight surgery is not without risk, especially for children under 2 years old. These findings support a more conservative approach to management of upper respiratory symptoms, with surgery reserved for cases where potential benefits are most likely to outweigh harms.

Maternal and neonatal outcomes of women with gestational diabetes and without specific medical conditions: an Australian population-based study comparing induction of labor with expectant management.

BACKGROUND/AIMS: To evaluate maternal birth and neonatal outcomes among women with gestational diabetes mellitus (GDM), but without specific medical conditions and eligible for vaginal birth who underwent induction of labour (IOL) at term compared with those who were expectantly managed. MATERIALS AND METHODS: Population-based cohort study of women with GDM, but without medical conditions, who had a singleton, cephalic birth at 38-41 completed weeks gestation, in New South Wales, Australia between January 2010 and December 2016. Women who underwent IOL at 38, 39, 40 weeks gestation (38-, 39-, 40-induction groups) were compared with those who were managed expectantly and gave birth at and/or beyond the respective gestational age group (38-, 39-, 40-expectant groups). Multivariable logistic regression analysis was used to assess the association between IOL and adverse maternal birth and neonatal outcomes taking into account potential confounding by maternal age, country of birth, smoking, residential location, residential area of socioeconomic disadvantage and birth year. RESULTS: Of 676 762 women who gave birth during the study period, 66 606 (10%) had GDM; of these, 34799 met the inclusion criteria. Compared with expectant management, those in 38- (adjusted odds ratio (aOR) 1.11; 95% CI, 1.04-1.18), 39- (aOR 1.21; 95% CI, 1.14-1.28) and 40- (aOR 1.50; 95% CI, 1.40-1.60) induction groups had increased risk of caesarean section. Women in the 38-induction group also had an increased risk of composite neonatal morbidity (aOR 1.10; 95% CI, 1.01-1.21), which was not observed at 39- and 40-induction groups. We found no difference between groups in perinatal death or neonatal intensive care unit admission for births at any gestational age. CONCLUSION: In women with GDM but without specific medical conditions and eligible for vaginal birth, IOL at 38, 39, 40 weeks gestation is associated with an increased risk of caesarean section.

Five-year survival of infants with major congenital anomalies: a registry based study.

AIM: To determine survival of infants with major congenital anomalies (CA) and assess the effect of co-existing anomalies and gestational age. METHODS: All liveborn infants with major CA born in New South Wales (NSW), Australia, 2004-2009 were identified from the NSW Register of Congenital Conditions. Deaths were identified via record linkage to death registrations and five-year survival was estimated using Kaplan-Meier methods. RESULTS: There were 8521 liveborn infants with CA of whom 617 (7.2%) died within the first five years of life. Half of deaths occurred in the first week of life. The overall five-year survival rate was 92.8% (95%CI: 92.2-93.3) and 83.2% (95%CI: 79.0-87.4) for syndromes, 83.4% (95%CI: 80.9-85.9) for multiple, 85.1% (95%CI: 82.6-87.5) for chromosomal, 95.3% (95%CI: 94.8-95.8) for isolated and 96.2% (95%CI: 94.3-98.1) for non-Q chapter anomalies. Five-year survival for chromosomal, syndromes and sub-groups was higher for isolated compared with multiple anomalies ranging from 77.5% to 98.9% and 68.6% to 89.5%, respectively. Survival was lower for preterm (79.4%; 95%CI: 77.5-81.4) than for term infants (95.8%; 95%CI: 95.3-96.3). CONCLUSION: Nine in ten infants with major CA survive up to five years, although there is variability in survival across CA groups. Survival of infants with major congenital anomalies has improved in recent years.

A population-based comparison of the post-operative outcomes of open and laparoscopic appendicectomy in children.

OBJECTIVE: To assess and compare the post-operative outcomes of open and laparoscopic appendicectomy in children. DESIGN: Record linkage analysis of administrative hospital (Admitted Patient Data Collection) and emergency department (Emergency Department Data Collection) data.Participants, setting: Children under 16 years of age who underwent an appendicectomy in a public or private hospital in New South Wales between January 2002 and December 2013. MAIN OUTCOME MEASURES: Association between type of appendicectomy and post-operative complications within 28 days of discharge, adjusted for patient characteristics and type of hospital. RESULTS: Of 23 961 children who underwent appendicectomy, 19 336 (81%) had uncomplicated appendicitis and 4625 (19%) had appendicitis complicated by abscess, perforation, or peritonitis. The proportion of laparoscopic appendicectomies increased from 11.8% in 2002 to 85.8% in 2013. In cases of uncomplicated appendicitis, laparoscopic appendicectomy was associated with more post-operative complications (mostly symptomatic re-admissions or emergency department presentations) than open appendicectomy (7.4% v 5.8%), but with a reduced risk of post-operative intestinal obstruction (adjusted odds ratio [aOR], 0.59; 95% CI, 0.36-0.97). For cases of complicated appendicitis, the risk of wound infections was lower for laparoscopic appendicectomy (aOR, 0.67; 95% CI, 0.50-0.90), but not the risks of intestinal obstruction (aOR, 0.97; 95% CI, 0.62-1.52) or intra-abdominal abscess (aOR, 1.06; 95% CI, 0.72-1.55). CONCLUSION: Post-appendicectomy outcomes were similar for most age groups and hospital types. Children with uncomplicated appendicitis have lower risk of post-operative bowel obstruction after laparoscopic appendicectomy than after open appendicectomy, but may be discharged before their post-operative symptoms have adequately resolved.

The impact of general anesthesia on child development and school performance: a population-based study.

BACKGROUND: There has been considerable interest in the possible adverse neurocognitive effects of exposure to general anesthesia and surgery in early childhood. AIMS: The aim of this data linkage study was to investigate developmental and school performance outcomes of children undergoing procedures requiring general anesthesia in early childhood. METHODS: We included children born in New South Wales, Australia of 37+ weeks' gestation without major congenital anomalies or neurodevelopmental disability with either a school entry developmental assessment in 2009, 2012, or Grade-3 school test results in 2008-2014. We compared children exposed to general anesthesia aged <48 months to those without any hospitalization. Children with only 1 hospitalization with general anesthesia and no other hospitalization were assessed separately. Outcomes included being classified developmentally high risk at school entry and scoring below national minimum standard in school numeracy and reading tests. RESULTS: Of 211 978 children included, 82 156 had developmental assessment and 153 025 had school test results, with 12 848 (15.7%) and 25 032 (16.4%) exposed to general anesthesia, respectively. Children exposed to general anesthesia had 17%, 34%, and 23% increased odds of being developmentally high risk (adjusted odds ratio [aOR]: 1.17; 95% CI: 1.07-1.29); or scoring below the national minimum standard in numeracy (aOR: 1.34; 95% CI: 1.21-1.48) and reading (aOR: 1.23; 95% CI: 1.12-1.36), respectively. Although the risk for being developmentally high risk and poor reading attenuated for children with only 1 hospitalization and exposure to general anesthesia, the association with poor numeracy results remained. CONCLUSION: Children exposed to general anesthesia before 4 years have poorer development at school entry and school performance. While the association among children with 1 hospitalization with 1 general anesthesia and no other hospitalization was attenuated, poor numeracy outcome remained. Further investigation of the specific effects of general anesthesia and the impact of the underlying health conditions that prompt the need for surgery or diagnostic procedures is required, particularly among children exposed to long duration of general anesthesia or with repeated hospitalizations.

Undescended testes: an update.

PURPOSE OF REVIEW: This article summarizes the latest evidence on the risk factors, management and outcomes of undescended testes (UDTs). RECENT FINDINGS: UDTs remain common, with increasing evidence that acquired UDT or the ascending testis syndrome should be considered part of the spectrum of this disease. Prompt diagnosis and early referral for surgical evaluation and treatment would seem most likely to result in an optimal functional and cosmetic outcome. Hormonal treatment, rather than orchidopexy, remains popular in some centers, despite a lack of good evidence to support its efficacy, although it may have an important adjunct role in optimizing fertility. Although often performed, ultrasound does not generally assist in the diagnosis and management of UDT, with enhanced education of primary care physicians more likely to facilitate early referral. The testis, rather than quiescent, appears biologically active in the male infant, with increasing evidence of an adverse impact on future spermatogenesis and fertility in men with a UDT. SUMMARY: Male infants with a UDT should be diagnosed and referred early for surgical evaluation. It seems likely that the optimal timing for surgery should be before the boy's first birthday. There remains a need for high-quality, long-term outcomes data to guide optimal management.

Genetic and environmental factors in the aetiology of hypospadias.

This article reviews the current evidence and knowledge of the aetiology of hypospadias. Hypospadias remains a fascinating anomaly of the male phallus. It may be an isolated occurrence or part of a syndrome or field defect. The increasing use of assisted reproductive techniques and hormonal manipulation during pregnancy may have been associated with an apparent rise in the incidence of hypospadias. Genetic studies and gene analysis have suggested some defects that could result in hypospadias. New light has also been thrown on environmental factors that could modulate candidate genes, causing altered development of the male external genitalia.

Angiopoietin 1 and 2 serum concentrations in first trimester of pregnancy as biomarkers of adverse pregnancy outcomes.

OBJECTIVE: To assess angiopoietin-1 (Ang-1), angiopoietin-2 (Ang-2), and the Ang-1/Ang-2 ratio levels in the first trimester of pregnancy, their association with adverse pregnancy outcomes, and their predictive accuracy. STUDY DESIGN: This cohort study measured serum Ang-1 and Ang-2 levels in 4785 women with singleton pregnancies attending first trimester screening in New South Wales, Australia. Multivariate logistic regression models were used to assess the association and predictive accuracy of serum biomarkers with subsequent adverse pregnancy outcomes (small for gestational age, preterm birth, preeclampsia, miscarriage >10 weeks, and stillbirth). RESULTS: Median (interquartile range) levels for Ang-1, Ang-2, and the Ang-1/Ang-2 ratio for the total population were 19.6 ng/mL (13.6-26.4), 15.5 ng/mL (10.3-22.7), and 1.21 (0.83-1.73), respectively. Maternal age, weight, country of birth, and socioeconomic status significantly affected Ang-1, Ang-2, and the Ang-1/Ang-2 ratio levels. After adjusting for maternal and clinical risk factors, women with low Ang-2 levels (<10th percentile) and high Ang-1/Ang-2 ratio (>90th percentile) had increased risk of developing most adverse pregnancy outcomes. Compared with the Ang-1/Ang-2 ratio alone, maternal and clinical risk factors had better predictive accuracy for most adverse pregnancy outcomes. The exception was miscarriage (Ang-1/Ang-2 ratio area under receiver operating characteristic curve = 0.70; maternal risk factors = 0.58). Overall, adding the Ang-1/Ang-2 ratio to maternal risk factors did not improve the ability of the models to predict adverse pregnancy outcomes. CONCLUSION: Our findings suggest that the Ang-1/Ang-2 ratio in first trimester is associated with most adverse pregnancy outcomes, but do not predict outcomes any better than clinical and maternal risk factor information.

Sex differences in risk of incident microvascular and macrovascular complications: a population-based data-linkage study among 25 713 people with diabetes.

BACKGROUND: The global prevalence of diabetes is similar in men and women; however, there is conflicting evidence regarding sex differences in diabetes-related complications. The aim of this study was to investigate sex differences in incident microvascular and macrovascular complications among adults with diabetes. METHODS: This prospective cohort study linked data from the 45 and Up Study, Australia, to administrative health records. The study sample included 25 713 individuals (57% men), aged ≥45 years, with diabetes at baseline. Incident cardiovascular disease (CVD), eye, lower limb, and kidney complications were determined using hospitalisation data and claims for medical services. Multivariable Cox proportional hazards models were used to assess the association between sex and incident complications. RESULTS: Age-adjusted incidence rates per 1000 person years for CVD, eye, lower limb, and kidney complications were 37, 52, 21, and 32, respectively. Men had a greater risk of CVD (adjusted hazard ratio (aHR) 1.51, 95% CI 1.43 to 1.59), lower limb (aHR 1.47, 95% CI 1.38 to 1.57), and kidney complications (aHR 1.55, 95% CI 1.47 to 1.64) than women, and a greater risk of diabetic retinopathy (aHR 1.14, 95% CI 1.03 to 1.26). Over 10 years, 44%, 57%, 25%, and 35% of men experienced a CVD, eye, lower limb, or kidney complication, respectively, compared with 31%, 61%, 18%, and 25% of women. Diabetes duration (<10 years vs ≥10 years) had no substantial effect on sex differences in complications. CONCLUSIONS: Men with diabetes are at greater risk of complications, irrespective of diabetes duration. High rates of complications in both sexes highlight the importance of targeted complication screening and prevention strategies from diagnosis.

Impact of specialized obesity management services on the reduction in the use of acute hospital services.

Severe obesity affects 4% of Australians and is associated with increased use of healthcare services and higher healthcare costs. This study evaluates the effect of attending a public tertiary obesity service on acute hospital use. This record-linkage study included people aged ≥16 years with severe obesity who attended the Nepean Blue Mountains Family Metabolic Health Service (FMHS), New South Wales, Australia between January 2017, and September 2021. Emergency department (ED) presentations and acute hospital admissions and respective costs in the 1-year and 3-years pre-and-post first FMHS attendance were compared, overall and for adequate attendance (≥5 visits). A total of 640 patients (74% female, 50% <45 years) attended the FMHS, totalling 15 303 occasions of service, average 24 per person. There was a 31.0% and 17.6% reduction in acute admissions and ED presentations, respectively, translating into 34.0% and 23.4% decrease in costs. Adequate engagement was associated with a 48% decreased risk of acute admission (odds ratio 0.52; 95% confidence interval 0.29-0.94). Over 3-years, there was a 19.8% and 20.7% reduction in acute hospital admissions and ED presentations, respectively. Findings indicate that tertiary obesity services reduce acute hospital use. Improved access to specialized obesity management may offload hospitals and contribute to acute healthcare cost avoidance.

Child characteristics and health conditions associated with paediatric hospitalisations and length of stay: a population-based study.

Background: Paediatric hospital length of stay (LoS) is often used as a benchmark for resource use of hospitalisations. Previous studies have mostly focused on LoS of admissions for specific conditions or medical specialties. We aimed to conduct an evaluation of LoS of all paediatric hospitalisations exploring the frequency and characteristics; and associated childhood conditions. Methods: This population-based cross-sectional study included all hospital admissions in children aged <16 years between January 2017 and December 2019 in New South Wales, Australia. LoS was categorised into: day or overnight stay, 2-7, 8-21 and ≥ 22 days. Socio-demographic and health service characteristics of each individual admission by LoS and age groups were evaluated. Findings: A total of 324,083 children had 518,768 admissions comprising 1,064,032 bed days. Most admissions wereday/overnight stays (71.9%) or 2-7 days (25.3%). While LoS >7 days represented 2.8% of total admissions, they accounted for 27% of total bed days. Children aged 1-4 years had the highest proportion of admissions (35%), with a majority lasting ≤7 days, whereas 45.6% of admissions ≥22 days were for children aged ≥12 years. Respiratory conditions, diseases of the digestive system and traumatic injuries were the most common reasons for hospitalization. LoS >7 days were more common in children from most disadvantaged backgrounds, residing further from hospital and those aged ≥12 years with mental health conditions. Interpretation: The majority of paediatric hospitalizations are for short stay and require programs that target acute conditions that can be managed in primary care. Interventions such as care coordination, tailored models of care and enhanced outpatient/community treatment programs for high-risk groups will help reduce extended LoS and improving child health and well-being. Funding: Australian National Health and Medical Research Council.

Impact and recovery of the COVID-19 pandemic on weight status of children and adolescents.

Recent evidence suggests the immediate effects of the COVID-19 lockdowns and restrictions have resulted in increased weight in children and adolescents. However, the longer-term effects have not been assessed. The aim of this study was to examine the impact and longer-term effects of the COVID-19 pandemic on BMI and weight status of children and adolescents. This study used routinely collected clinical data from the Sydney Children's Hospitals Network, comprising two socio-demographically diverse children's hospitals in New South Wales, Australia from 2018 to 2021. Of 245 836 individuals ≤18-years assessed, mean BMI percentile increased from 58.7 (SD 31.6) pre-COVID-19 to 59.8 (SD 31.7) (p < .05) post-restrictions and overweight/obesity increased by 5.5% (obesity alone 6.3%), predominantly in children <12-years and from lower socioeconomic backgrounds. The trend in BMI percentile was steady pre-COVID-19 (ß = -0.03 [95% CI -0.07, 0.01]), peaked immediately following COVID-19 restrictions (ß = 1.28 [95% CI 0.24, 2.32]) and returned to pre-pandemic levels over ensuing 21 months (ß = -0.04 [95% CI -0.13, 0.04]). Routine anthropometric measurement facilitates ongoing monitoring and evaluation of the weight status of children and adolescents, helping to identify those at-risk. Despite initial BMI and weight increases among children and adolescents, longer-term follow-up highlighted a return to pre-pandemic rates, possibly attributed to state-wide policies aimed at reducing childhood obesity.

Socio-demographic and familial factors associated with hospital admissions and repeat admission for dental caries in early childhood: A population-based study.

OBJECTIVES: Dental caries remains a complex childhood condition often requiring preventable hospital admissions. There are limited population-based epidemiological studies that use large and linked data sets to quantify the clinical, socio-demographic and familial risk factors related to hospital admissions for dental caries. The aim of this study was to describe and quantify the rates, socio-demographic, clinical characteristics and familial factors including repeat admissions associated with young children admitted to hospital for dental caries. METHODS: This cohort study (n = 33,438) used longitudinally linked hospital admission data among all children aged

The accuracy of hospital discharge data in recording major congenital anomalies in Australia.

BACKGROUND: There has been increasing use of hospital discharge data to identify congenital anomalies, with limited information about the accuracy of these data. OBJECTIVES: To evaluate the accuracy of hospital discharge data in ascertaining major congenital anomalies in infants. METHODS: All liveborn infants with major congenital anomalies born between 2004 and 2009 in New South Wales, Australia were included. They were separated into two study groups: (a) infants identified from the Register of Congenital Conditions with a corresponding record in linked hospital discharge data; and (b) infants with a recorded congenital anomaly in hospital data, but without a register record. For the first group, we assessed agreement (concordant diagnoses) and the proportion of anomalies with discrepant diagnoses in each dataset. For the second group, we determined the number of anomalies recorded only in hospital data and applied specific conditions restricting to those recorded in the birth admission, excluding nonspecific diagnoses, or those with relevant surgical procedures to minimize potential false positives or over-reporting. RESULTS: The first study group included 9,346 infants with an average 84% agreement in the ascertainment of major anomalies between hospital and registry data, and >93% agreement for cardiac, abdominal wall, and gastrointestinal anomalies. Discrepant diagnoses occurred on average in 20% of cases from hospital data and 17% from registry data, and were slightly reduced with the use of diagnoses recorded only in tertiary pediatric hospitals. The second group included 25,893 infants where anomalies were only recorded in hospital data, most commonly skin and unspecified anomalies. Excluding unspecified cases, those only diagnosed at the birth admission and restricting to surgical procedures reduced over-reporting by up to 96%. CONCLUSIONS: Hospital discharge data provide an acceptable means to ascertain congenital anomalies, but with variable accuracy for different anomalies. Application of specific conditions and limited to surgical procedures improves the utility of using hospital discharge data to ascertain congenital anomalies.

The burden of hospitalized sports-related injuries in children: an Australian population-based study, 2005-2013.

BACKGROUND: There is concern about recent increase and severity of sports-related injuries in children. Despite the benefits of sports participation, injuries may carry long-term health consequences. We aimed to evaluate the prevalence, characteristics and types of hospitalized sports-related injuries in children. METHODS: Population-based study of all acute sports-related injuries requiring hospitalization in children 5 to 15 years of age in New South Wales (NSW), Australia, 2005-2013. Health information was obtained from the NSW Admitted Patient Data Collection, a census of all hospital admissions from public and private hospitals. Children with a recorded ICD10-AM injury code (S00-T79) and sport-related activity code (U50-U70) were included. Prevalence and trend in injuries by age group, sporting code, body region affected and type of injury were assessed. RESULTS: There was a total of 20,034 hospitalizations for sports-related injuries (2.7% of all hospitalizations in children aged 5-15 years), involving 21,346 recorded injuries in 19,576 children. The overall population hospitalization period prevalence was 227 per 100,000 children aged 5-15 years in 2005-2013, remaining stable over time (RR 0.99; 95% CI 0.98-1.00). Football codes such as rugby league/union and soccer combined represented nearly two thirds of the total (60%). The most common body regions affected were the forearm (31%) head (15%) and hand injuries (13%). Fractures accounted for 65% of injuries followed by dislocations (10%) and traumatic brain injury (10%). Compared to other age groups, children aged 5-8 years had double the proportion of shoulder (15% vs. 7%) while 13-15 year olds had higher proportion of lower-leg (14% vs. 8%) and knee (6% vs.2%) injuries. One in seven injuries sustained while playing rugby league/union, baseball and hockey were traumatic brain injuries. A total of 444 (2.2%) of children had more than one hospitalization for sports-related injuries. CONCLUSION: On average, six children were hospitalized every day for sports-related injuries in the last decade with trends remaining stable. The most common sports involved were football codes, one in three injuries involved the forearm and two thirds were fractures. These findings can be used to inform health policy and sporting governing bodies to target preventive interventions and promote safe sports participation in children.