The causes of Perthes disease are unknown. There is considerable evidence that the disease has a vascular mechanism, although the nature of this is unknown. There is some suggestion that affected individuals may have a heightened cardiovascular risk in adulthood.

Children with Perthes disease have reduced vascular caliber, which is independent of body height, and abnormal functional vascular measures. These findings may be important in the mechanism of disease and may have implications on long-term vascular morbidity. (Read the full article)

Death or neurodevelopmental impairment in extremely premature neonates can be predicted at birth by considering gender, antenatal steroids, multiple birth, birth weight, and gestational age.

Prediction of death or neurodevelopmental impairment in extremely premature infants is improved by using information available later during the clinical course. The importance of birth weight declines, whereas that of respiratory illness severity increases with advancing postnatal age. (Read the full article)

Literature about polymorphic expression of an apparent life-threatening event (ALTE), particularly that concerning discrimination between ALTE with evident cause and idiopathic ALTE, is scarce. Relationships between SIDS and ALTEs have been supposed but data are still controversial and no genetic data are available.

Genetic analysis (5HTT and MAOA) on ALTEs and idiopathic ALTEs discriminated the 2 syndromes and found a link between the idiopathic form and SIDS. Consequently, we hypothesized that the 2 latter syndromes could be different phenotype expressions of a common genetic base. (Read the full article)

Late preterm infants are at risk for a variety of developmental impairments; however, little is known about developmental differences among children born within the term range of 37 to 41 weeks’ gestation.

This study links comprehensive birth record data from 128 050 term births to children’s school records 8 years later. Analyses establish that, even among the "normal term" range, gestational age is an important independent predictor of academic achievement. (Read the full article)

Sudden cardiac death in young athletes is an uncommon but devastating event. Addition of routine electrocardiogram (ECG) screening to standard preparticipation care may reduce the number of sudden deaths. Lack of data regarding effectiveness and costs has prevented widespread implementation.

Adding ECG screening to current preparticipation evaluation is not cost-effective. Cost is driven primarily by the evaluation of the large number of false-positive findings. An ECG-only screening strategy is more cost-effective. (Read the full article)

Moderately preterm-born children (32–35^6/7 weeks’ gestation) are at risk for both neonatal morbidities after birth and developmental delays in early childhood. It is unknown whether neonatal morbidities contribute to the developmental delays of this particular group.

Of all neonatal morbidities commonly seen in moderately preterm-born children, only hypoglycemia increased the risk of developmental delay after moderately preterm birth. A concerted effort to prevent hypoglycemia after birth might enhance developmental outcome in this group. (Read the full article)

Siblings and other contacts of abused children, especially twins, are thought to be at higher risk for abuse than other children. However, the rate at which screening tests identify injuries in contacts is currently unknown.

Contacts of abused children with serious injuries have fractures identified on skeletal survey at significant rates. Twins are at substantially increased risk for fracture. Physical examination findings were not sensitive for fractures. (Read the full article)

This research presents the first 2 experimental studies on the short-term effects of smoking portrayal in movies on children’s beliefs about smoking.

Exposure to movie smoking from cartoon and family-oriented movies had no effect on implicit associations toward smoking. For smoking beliefs, effects were again small and only statistically significant for social norms regarding smoking. (Read the full article)

Trisomy 13 and 18 are conditions with 1-year survival rates of less than 10% and have traditionally been treated with palliative care. There are increasing reports of ethical dilemmas caused by parental requests for clinical interventions.

Parents who belong to social networks report an enriching family experience and describe surviving children as happy. Many of these parents describe challenging encounters with health care providers. (Read the full article)

Food insecurity has been linked to childhood obesity in a number of studies. Few studies have explored potential pathways through which food insecurity is related to child weight, especially in low-income families with young infants.

We found that food insecurity was related to maternal controlling feeding styles and concerns about the infants’ future weight. Early obesity prevention should aim to decrease food insecurity and to reduce controlling feeding styles in families who remain food insecure. (Read the full article)

The importance of and interest in childhood mental problems have increased worldwide. There are few population studies on child and adolescent mental health and health-related quality of life (HRQoL).

A social gradient was found in childhood mental health according to maternal education level and social class, but none was found in HRQoL, although children from disadvantaged social classes had somewhat lower HRQoL scores than their more advantaged counterparts. (Read the full article)

National data from child protective services agencies have shown a 55% decrease in the incidence of substantiated cases of physical abuse from 1992 to 2009, but no study has tracked the occurrence of serious injuries due to physical abuse.

Using national data from hospitalized children, we found a statistically significant increase in the incidence of serious injuries due to physical abuse from 1997 to 2009. These results are in sharp contrast to data from child protective services. (Read the full article)

Children investigated for alleged maltreatment have considerable physical, mental health (MH), developmental, and educational needs and often do not receive services to address these needs. The prevalence/correlates of MH services use in the current challenging financial environment is unknown.

This study demonstrates the importance of medical providers and schools for receipt of MH services for these children, but shows disparities in MH service use between white and nonwhite children. Unlike earlier findings, MH service use declined over the follow-up. (Read the full article)

Autism spectrum disorders are characterized by heterogeneous severity. Previous latent variable analyses of longitudinal data have focused on trajectories of related features such as IQ, and not on changes over time in standardized, observational measures of core autism symptoms.

Autism Diagnostic Observation Schedule–calibrated severity scores allow comparisons of observational data from toddlerhood to adolescence. This first report of latent autism severity trajectory classes indicates that most children show stability in core symptom severity over many years; small groups improved or worsened. (Read the full article)

The past several decades have seen a dramatic increase in the costs of health care and the prevalence of childhood activity limitations. More families with children are experiencing financial burden related to the cost of health care and insurance.

We find significant inequities in the occurrence of delayed or forgone needed health care for families with children as a result of high health care–related financial burden and having a child with an activity limitation. (Read the full article)

Previous studies have demonstrated that booster seat legislation decreased fatalities in children. However, these studies have not accounted for confounding factors such as other legislation and temporal trends in safety.

This study demonstrates that state booster seat laws are associated with decreased rates of fatalities and injuries in children 4 to 7 years of age in the United States, with the strongest effects in the older children. (Read the full article)

Nationally representative surveys provide insight into overall childhood obesity trends and disparities but do not identify patterns specific to individual states. School-based surveillance is recommended, but it is unclear whether surveillance is helping to identify children at greatest risk.

This study includes 3 consecutive years of surveillance findings to describe within-state spatial and socioeconomic disparities in obesity among elementary-aged children. Implications for states using and considering school-based surveillance to plan preventive interventions are considered. (Read the full article)

Data from several states that have implemented protective eyewear mandates at the scholastic level have shown a substantial reduction in eye injuries. However, there are no studies that critically evaluate the effectiveness of protective eyewear in girls’ field hockey.

Data collected from regional/national high school sports injury surveillance databases by certified athletic trainers has resulted in the largest prospective national study examining the effectiveness of mandated protective eyewear in reducing head, eye/orbital, concussive, and facial injuries performed to date. (Read the full article)

A previous study of inflatable bouncer–related fractures has shown that upper extremity fractures are most common, and many fractures are caused by collisions; however, no study has examined nonfracture injuries or used nationally representative data to investigate inflatable bouncer–related injuries.

This is the first study to use nationally representative data to calculate national injury rates, assess risk factors, and examine trends for pediatric inflatable bouncer–related injuries treated in US emergency departments over a 21-year period (1990–2010). (Read the full article)

Adolescent physical fighting is an important public health concern with known social origins. However, existing international studies of adolescent fighting provide little evidence about its prevalence, trends over time, or possible socioeconomic determinants.

We studied frequent physical fighting among 494 874 adolescents in 30 countries over an 8-year period. Physical fighting declined in most countries. National measures of absolute wealth but not socioeconomic inequalities related to risk of frequent physical fighting. (Read the full article)

Medical imaging that uses ionizing radiation provides notable benefits in the clinical setting. Controversy regarding increased cancer risk, particularly in children, dictates that ordering practices and use of such medical imaging be evaluated to reduce unnecessary exposure to imaging-related radiation.

We evaluated the prevalence and characteristics of diagnostic imaging procedures in children. The proportion of higher radiation procedures is increasing, especially among children evaluated in the inpatient and emergency department settings and those with gastrointestinal and neurologic symptoms, and congenital anomalies. (Read the full article)

The eating of non–nutrient dense snack foods is considered a major factor contributing to childhood obesity. Parents are often ineffective at encouraging healthier snacking habits.

Children consumed fewer calories when snacking on nutrient-rich cheese and vegetables compared with when they were served potato chips. (Read the full article)

Validated questionnaires can improve the identification of psychosocial problems among children. The Strengths and Difficulties Questionnaire (SDQ) 3-4 is a promising option. However, no studies are available that examine the psychometric properties of the SDQ parent form 3-4.

The results of this study show that the SDQ 3-4 is a valid tool for the identification of psychosocial problems in preschool-aged children. (Read the full article)

Presleep activities (eg, television watching) have been implicated in the declining sleep duration of young people. However, previous research reported on selected presleep activities, raising the possibility that important activities in this period are not accounted for.

This is the first study in youth to construct the presleep period by using a use-of-time approach. Twin trajectories of higher screen time and lower nonscreen sedentary time/self-care were evident in late sleepers, with the opposite pattern occurring in early sleepers. (Read the full article)

Birth asphyxia, or failure to initiate or sustain spontaneous breathing at birth, contributes to ~27% to 30% of neonatal deaths in resource-limited countries, including Tanzania. Without change, these countries will fail to meet Millennium Development Goal 4 targets by 2015.

The Helping Babies Breathe program was implemented in 8 hospitals in Tanzania in 2009. It has been associated with a sustained 47% reduction in early neonatal mortality within 24 hours and a 24% reduction in fresh stillbirths after 2 years. (Read the full article)

Care coordination has been proposed as a key mechanism for increasing quality and reducing costs of care. Little is known about the degree to which disparities exist in care coordination or whether having high-quality primary care attenuates disparities.

A considerable proportion of parents reported unmet care coordination needs for their children, especially parents of children with special health care needs. Black and Latino children also may have more unmet needs because they received family-centered care less often. (Read the full article)

Health care transition services assist youth with special health care needs (YSHCN) in transitioning to adult care without gaps in services or health insurance coverage. Less than half of YSHCN receive anticipatory assistance in this transition; receipt of these services for youth with autism spectrum disorder is unknown.

Youth with autism spectrum disorder receive transition services half as often as youth with special health care needs. Quality of health care is associated with increased receipt of health care transition services. Presence of comorbid conditions decreased receipt of transition services. (Read the full article)

Isolated case reports of abnormal voice after extremely preterm birth are well described; however, there are no systematic studies of long-term voice outcomes in children born preterm.

Significant voice abnormalities were found in more than half of tested children born before 25 weeks’ gestation. Multivariable analyses showed that the number of intubations, not the duration of intubation, and female gender were strongly associated with this adverse outcome. (Read the full article)

UV radiation exposure in tanning beds is associated with an increased risk of skin cancer. Because of the rising rate of melanoma, the World Health Organization recommends that persons <18 years of age not use tanning devices.

Despite scientific evidence to the contrary, tanning facilities in Missouri, a state without indoor-tanning regulations, often misinformed consumers regarding the risk of skin cancer and would allow children as young as 10 years old to use tanning devices. (Read the full article)

Although it is known that relatively minor abusive injuries sometimes precede more severe physical abuse, the prevalence of these previous injuries in infants evaluated for abuse was not known.

A history of bruising or oral injury in a precruising infant evaluated for abuse should heighten the level of suspicion because these injuries are common in abused infants and rare in infants found not to be abused. (Read the full article)

Perforation in the setting of retained esophageal foreign body is rare, but can be catastrophic. The role of imaging in screening for injury after removal has not previously been studied.

The rate of esophageal injury among children with retained esophageal foreign body is 1.3%. Intraoperative findings suggestive of injury are predictive of perforation. Routine chest radiography is not warranted in those who do not meet this criterion. (Read the full article)

Current recommendations to prevent warts focus on limiting the personal spread of human papillomavirus and transmission in public places, such as swimming pools; however, evidence on risk factors for developing warts is limited.

Cutaneous human papillomavirus in primary schoolchildren is primarily transmitted in the family and school class. This suggests that recommendations should shift toward reducing transmission in families and school classes. (Read the full article)

Previous studies report Hispanic adults have lower access to rehabilitation services, especially among those who only speak Spanish, and higher disability after traumatic brain injury (TBI) compared with non-Hispanic white subjects. No studies have examined disparities in disability after TBI for Hispanic children.

Hispanic children experience disparities in long-term disability after TBI. Compared with non-Hispanic white children, Hispanic children report significantly larger reductions in health-related quality of life, participation in activities, and ability to communicate and care for themselves 3 years after injury. (Read the full article)

Despite proven health benefits, human papillomavirus (HPV) vaccination rates are among the lowest of all routine immunizations. No previous large-scale trial has compared the benefit of automated decision support directed at clinicians, families, or both in any context.

We found that a clinician-focused intervention was most effective for initiating the HPV vaccine series, whereas a family-focused intervention supported completion. Decision support directed at both clinicians and families most effectively promotes HPV vaccine series receipt. (Read the full article)

Hydrocarbons are dangerous household products commonly found in homes with young children. Unintentional ingestion continues to be a problem despite existing prevention efforts. Aspiration is often associated with ingestion of hydrocarbons by children.

The National Poison Database System and National Electronic Injury Surveillance System data sets demonstrate similar rates of hydrocarbon-related injuries in children. Rates of hydrocarbon exposure were highest in summer. Gasoline was the product most associated with hydrocarbon injuries. (Read the full article)

Extremely preterm infants who receive antihypotensive therapy have worse outcomes than untreated infants. The reasons for this are not clear. High-quality randomized trials have not been performed to date because of logistical challenges, thereby necessitating alternative methods of investigation.

Antihypotensive therapy administration was not associated with improved in-hospital outcomes for any of the 15 definitions of low blood pressure investigated. Alternative methods of deciding who to treat are needed to maximize patient benefit and minimize harm. (Read the full article)

Child welfare data show declines in child physical abuse since the early 1990s, but analysis of national data from hospitalized children in the Kids’ Inpatient Database showed an increased incidence of serious physical abuse in children from 1997 to 2009.

We found no significant change in hospitalization rates for injury from abuse in young children and increases in injury severity using the National Inpatient Sample from 1997 to 2009. This data helps provide a more complete perspective of the problem. (Read the full article)

Internet, smartphones, and online social media offer new platforms for health promotion and disease management. Few studies have evaluated the use of digital technology among families receiving care in an urban pediatric primary care setting.

Caregivers in an urban pediatric primary care setting have access to and frequently use the Internet, smartphones, and online social media. These technologies may help reach a traditionally hard-to-reach population. (Read the full article)

Minority children are less likely than white children to be diagnosed and treated with attention-deficit/hyperactivity disorder. However, diagnosis patterns over time in early and middle childhood and whether confounding factors explain these disparities are not currently well understood.

Racial/ethnic disparities in attention-deficit/hyperactivity disorder diagnosis occur by kindergarten and continue until eighth grade. Racial/ethnic disparities among diagnosed children in medication use occur in both fifth and eighth grades. These disparities are not attributable to confounding factors. (Read the full article)

Because children often lack the physical strength, cognitive abilities, and fine motor skills to operate all-terrain vehicles (ATVs) properly, their risk of injury is greater.

During 2001–2010 in the United States, ~361 000 children aged ≤15 years were injured while riding ATVs. The decline in the injury rate during 2005–2010 might be related to the economic recession and decreased sales of new ATVs. (Read the full article)

Previous research has demonstrated that pediatric injuries associated with television (TV) tip-overs are increasing, children aged ≤4 years are at highest risk for injury, and the head and neck are most commonly injured.

We analyzed a nationally representative sample comprising 22 years of data. On average, 17 313 children receive emergency treatment of a TV-related injury annually in the United States. The rate of injury attributable to falling TVs increased by 95% over 22 years. (Read the full article)

Only 2 randomized controlled trials have addressed effects of ultrasound screening for developmental hip dysplasia. Both concluded that adding universal or selective ultrasound to routine clinical examination gave a nonsignificant reduction in rates of late presenting cases, but higher treatment rates.

This maturity review assesses long-term outcome of one of these trials. Rates of radiographic findings indicating acetabular dysplasia and degenerative change were similar across the 3 screening groups in young adulthood. Increased treatment rates were not associated with avascular necrosis. (Read the full article)

Previous studies have reported that former late preterm infants are at increased risk for future learning and behavioral problems; thus it has been suggested that their development be closely monitored.

This population-based study indicates that the risk for attention deficit/hyperactivity disorder and learning disabilities may not be higher in former late preterm infants, and therefore intensive neurodevelopmental follow-up may not be required for all late preterm infants. (Read the full article)

Rehabilitation of people with cerebral palsy aims to achieve and maintain optimal performance in mobility and daily activities. Although insight into the developmental trajectories of activities from childhood into adulthood is important, little is known about long-term development.

The gross motor function of children with cerebral palsy determines the developmental trajectories of mobility performance but not of daily activities, where intellectual disability was shown to be the determining factor. (Read the full article)

Health insurance is associated with improved health for children, but gay and lesbian parents face barriers to adding their children to private health insurance. Little is known about the extent to which insurance disparities exist for children with same-sex parents.

Children with same-sex parents are less likely to have private health insurance. When children live in states in which legal same-sex marriage, civil unions, domestic partnerships, or second-parent adoptions are available, disparities in private insurance diminish for children with same-sex parents. (Read the full article)

Caregiver behavioral symptom ratings are frequently used to assist in diagnosing childhood behavioral disorders. Although behavioral disorders are highly comorbid with learning disabilities (LDs), little work has examined the utility of caregiver ratings of learning concerns for screening of comorbid LD.

The validity of a time- and cost-efficient caregiver rating of academic concerns (Colorado Learning Difficulties Questionnaire) was examined. The screening measure accurately predicted children without LD, suggesting that the absence of parent-reported difficulties may be adequate to rule out overt LD. (Read the full article)

Links between clinically diagnosed sleep problems and adverse behavioral outcomes are well documented. However, in nonclinical populations, causal links between disrupted sleep and the development of behavioral difficulties are far from clear.

Seven-year-old children with nonregular bedtimes had more behavioral difficulties than children who had regular bedtimes. There were clear dose–response relationships, and the effects of not having regular bedtimes appeared to be reversible. (Read the full article)

Gunshot injuries are an important cause of preventable injury and mortality in children, with emergency services often providing the initial care for patients. However, there is little recent population-based research to guide public health, injury prevention, and health policy efforts.

Gunshot injuries are uncommon in children, but cause greater injury severity, need for major surgery, mortality, and costs compared with other injury mechanisms. There is also large variation in the population-adjusted incidence of pediatric gunshot injuries between regions. (Read the full article)

Previous research has shown the following: the mere presence of weapons can increase aggression, dubbed the "weapons effect"; violence in films has increased over time; and violent films can increase aggression.

This study examines a potential source of the "weapons effect": the presence of guns in films. In just 20 years, gun violence in PG-13 films (age 13+) has increased from the level in films rated G/PG to the point where it exceeds the level in R films. (Read the full article)

Certain characteristics of the sleep environment increase the risk for sleep-related, sudden, and unexplained infant death. These characteristics have the potential to generate asphyxia. The relationship between the deaths occurring in these environments and neurochemical abnormalities in the brainstem that may impair protective responses to asphyxia is unknown.

We report neurochemical brainstem abnormalities underlying cases of sudden infant death that are associated with and without potential asphyxial situations in the sleep environment at death. The means to detect and treat these abnormalities in infants at risk are needed. (Read the full article)