There are no studies to support the clinical awareness of persistent Tanner stage (TS) 4 breast development in adulthood, and forensic experts continue to use TS 4 as evidence of age <18 years in cases of alleged child pornography.

One-fourth of nonclinical images of women over 18 years of age could be considered by a single forensic expert to represent TS 4. This observation, and substantial discordance in interpretation by pediatric endocrinologists, renders testimony based on this distinction invalid. (Read the full article)

Childhood obesity is a public health concern. Although determinants of childhood overweight have been identified and their effect sizes have been calculated, prevention as well as treatment have had limited success.

We have calculated the population-based relevance of determinants of childhood overweight by using attributable risks, which can be interpreted as maximum success rates of preventive measures. New concepts were applied to estimate the relative contribution of each risk factor. (Read the full article)

Declining dietary omega 3 polyunsaturated fatty acids has been associated with rising allergy prevalence and fish oil is therefore of interest in allergy prevention. Supplementation during pregnancy, but not after the age of 6 months, has achieved some allergy reductions.

We assessed the effect of fish oil supplementation from birth to 6 months, which has not been investigated previously. Our results, together with previous findings, will likely help define a "window of opportunity" for allergy intervention using fish oil supplements. (Read the full article)

Although the natural course of bilirubin levels has been extensively studied in general neonatal populations, there is a paucity of data regarding bilirubin trends in neonates before the development of significant hyperbilirubinemia.

This study provides data on the natural course of transcutaneous bilirubin before the development of significant hyperbilirubinemia, and on the effect of different demographic and perinatal risk factors on the rate of bilirubin increase in neonates with borderline bilirubin values. (Read the full article)

The Apgar score is a convenient method to rapidly assess the clinical status of the newborn infant. Recent literature suggests Apgar scores vary widely in preterm infants.

The Apgar signs for respiratory effort, grimace, and muscle tone demonstrated considerable disagreement in preterm infants ≤28 weeks’ gestation. Disagreement exists despite the level of respiratory intervention, continuous positive airway pressure, or intubation, and is likely independent of gestational age. (Read the full article)

Inflammatory bowel disease pathogenesis is incompletely understood. Previous pediatric studies suggested associations between antibiotic use and inflammatory bowel disease development but were limited by recall bias, lack of controls, incomplete antibiotic capture, or included exposures between symptom onset and diagnosis.

Our population-based cohort study suggests that certain childhood antibiotic exposures are associated with an increased risk of developing inflammatory bowel disease. Our findings have implications for understanding the condition’s pathogenesis and provide additional stimulus for reducing unnecessary childhood antibiotic use. (Read the full article)

Children born late preterm (34–36 weeks’ gestation) are at increased risk of adverse early childhood outcomes compared with term-born children. The impact of the neonatal experience on longer-term outcomes of these infants has not yet been well considered.

This study provides information regarding the development of late preterm infants at 3 years. Late preterm infants who received neonatal intensive or high-dependency care had similar developmental outcomes to children born late preterm who did not receive this care. (Read the full article)

Exergaming offers a physical activity (PA) alternative for youth that may be attractive in our increasingly technophilic society. Exergaming increases PA and decreases sedentary time, but most exergame studies are clinically based and focus on measuring energy expenditure during exergaming.

One-quarter of adolescents exergamed at intensity levels that could help them achieve PA recommendations. Exergamers were more likely to be female, play nonactive video games, watch ≥2 hours of television per day, be stressed about weight, and be nonsmokers. (Read the full article)

Exposure to background television (ie, times when the television is on but the child is attending to another activity) is negatively associated with children’s cognitive functioning and social play.

US children (8 months to 8 years) are exposed to nearly 4 hours of background television on a typical day. Younger children and African American children are exposed to more background television. Family behaviors associated with background television are offered. (Read the full article)

The Global Trigger Tool uses a sampling methodology to identify and measure harm rates. It has been shown to effectively detect adverse events when applied in the adult environment, but it has never been evaluated in a pediatric setting.

The Global Trigger Tool can be used in the pediatric inpatient environment to measure adverse safety events. We detected a 2 to 3 times higher harm rate than previously found with different metrics in this setting. (Read the full article)

Invasive Cronobacter infection is a rare but devastating disease known to affect hospitalized premature or immunocompromised infants fed powdered infant formulas (PIFs). PIF labels imply that powdered formulas are safe for healthy, term infants if the label instructions are followed.

Cronobacter can also infect healthy, term infants in the first months of life, even if PIF label instructions are followed. Invasive Cronobacter infection is extremely rare in exclusively breastfed infants or those fed commercially sterile, ready-to-feed formulas. (Read the full article)

Brain maturation processes of very premature children are adversely affected by serious neonatal infections. Differences in brain development persist into childhood and adolescence, and underpin widespread neurocognitive and behavioral deficits in very preterm children.

We present evidence for long-term beneficial effects of early nutritional intervention with glutamine in very preterm infants on brain development at 8 years of age, mediated by a decrease in the number of serious neonatal infections. (Read the full article)

Several meta-analyses evaluating probiotics in preterm infants suggest a beneficial effect for the prevention of necrotizing enterocolitis and death, but less for nosocomial infection. Lactobacillus reuteri may reduce these outcomes because of its immunomodulation and bactericidal properties.

Although L reuteri did not appear to decrease the rate of death or nosocomial infection, the trends suggest a protective role consistent with the literature. Feeding intolerance and duration of hospitalization were significantly decreased in premature infants ≤1500 g. (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)

Fever without an apparent source is common in children. Currently in the United States, serious bacterial infection is uncommonly the cause. Most cases are assumed to be viral, but the specific viral causes have not been delineated. Antibiotics are frequently prescribed.

By using polymerase chain reaction, we detected pathogenic viruses frequently in children with fever without an apparent source. Adenovirus, human herpesvirus-6, enterovirus, and parechovirus were predominant. Testing of blood had high yield. Better recognition of viral etiologies may help reduce unnecessary antibiotic use. (Read the full article)

Randomized controlled trials of early developmental interventions for very preterm infants demonstrate short-term benefits for infant neurobehavioral functioning. The longer-term benefits of these interventions for children and their families are not yet clear.

This randomized trial shows that home-based preventive care over the first year of life for very preterm infants has selective long-term benefits. Caregivers report less anxiety and fewer were at risk for an anxiety disorder. Preschoolers show fewer internalizing behaviors. (Read the full article)

Today’s adolescents increasingly use the Internet to explore their sexual identity. There is public concern that the Internet, because of its accessibility, affordability, and anonymity, stimulates adolescents to engage in online sexual risk behavior (eg, sending sexual images to strangers).

This 4-wave panel study is the first to delineate the typical development of online sexual risk behavior, its relationship with offline sexual risk behavior, and the factors (eg, sensation seeking, family cohesion, life satisfaction, education, online communication) that predict both behaviors. (Read the full article)

Some groups of children are especially prone to develop overweight and obesity. Overweight in children affects their physical and psychological health and shortens life expectancy. Overweight in children with Down syndrome (DS) is attributed to their commonly found comorbidities.

This study provides prevalence rates of overweight and obesity in a nationwide sample of otherwise healthy children with DS. Overweight is observed from young ages in healthy children with DS and those with severe congenital heart defects. (Read the full article)

Drowning is a leading cause of death for children in low- and middle-income countries. However, few childhood mortality reduction programs target drowning because of a lack of evidence on costs and effectiveness of these interventions.

This study presents the cost-effectiveness results of a low-cost injury and drowning prevention program in Bangladesh. We show that child care centers and swimming lessons are highly cost-effective interventions that could be scaled to other countries. (Read the full article)

With increasing survival rates, there is growing interest in long-term quality of life among patients with univentricular heart defects, and neurodevelopmental deficits play a major role in adverse outcome.

Although median cognitive performance was within normal limits, major neurodevelopmental impairment was found in one-fourth, and minor neurologic dysfunction in almost half of patients. Brain MRI showed mostly ischemic findings of different degrees in the majority of patients. (Read the full article)

Osteopathy of prematurity continues to occur in preterm infants. Osteopathy of prematurity can cause rib fractures in ex-preterm infants.

Rib fractures in ex-preterm infants are often posterior and multiple. Posterior rib fractures may not be diagnostic of nonaccidental injury in ex-preterm infants. (Read the full article)

Delayed meconium passage impairs gastrointestinal function in premature infants. No intervention has been identified that accelerates meconium passage sufficiently. Gastrografin is an osmotic contrast agent used for radiologic examination of the bowel or for conservative treatment of uncomplicated meconium ileus.

Gastrografin did not accelerate complete meconium evacuation but stimulated gastrointestinal motility in a randomized, placebo-controlled trial in premature infants. Application shortened the time to full enteral feedings and hospital stay but was associated with necrotizing enterocolitis as a possible adverse event. (Read the full article)

There is widespread belief that many hospital readmissions in adults are avoidable by improvements in care and discharge planning processes, resulting in significant cost savings; however, current studies have not examined the preventability of such readmissions in children’s hospitals.

The overall rate of pediatric 15-day readmissions considered to be preventable was low, less than 2% of total hospital admissions. Pediatric readmissions are unlikely to serve as a highly productive focus for cost savings or quality measurement. (Read the full article)

Sugar-sweetened beverage (SSB) consumption is associated with childhood obesity risk. Because dietary salt intake is a determinant of fluid consumption in adults, a high-salt diet may predict greater consumption of SSBs and therefore increase obesity risk.

In Australian children, the amount of salt consumed was positively associated with fluid consumption, and predicted the amount of SSB consumed. In addition, SSB consumption was associated with obesity risk, indicating a potential link between salt intake and childhood obesity. (Read the full article)

Developmental screening using standardized tools has been endorsed by professional groups to improve rates of identification and referral for young children who have developmental delays. Little is known about the effectiveness of these tools among a high-risk urban population.

Using a randomized design, we found that a program of developmental screening improved the percentage and time to identification of developmental delay, referral, and eligibility for early intervention among a poor, racially diverse urban population of young children. (Read the full article)

The prevalence of asthma and associated urgent medical visits vary dramatically across neighborhoods in New York City. Some, but not all, children with asthma wheeze when they exercise.

Exercise-induced wheeze was more common for asthmatic children living in neighborhoods with higher versus lower asthma prevalence. Because exercise-induced symptoms indicate a propensity for rapid-onset symptoms, this increased prevalence may contribute to the observed increase in urgent medical visits. (Read the full article)

Infants and toddlers with deformational plagiocephaly (DP) score lower on developmental measures than children without DP and lower than expected relative to test norms.

This study is the first to examine developmental outcomes in preschool-aged children with DP relative to demographically similar children without DP using a standardized, clinician administered assessment. (Read the full article)

Adequate vitamin D is essential for skeletal health in developing children. Although excess body weight is associated with risk of vitamin D deficiency, the national prevalence of vitamin D deficiency in overweight and obese children is unknown.

Vitamin D deficiency is highly prevalent in overweight and obese children, and severely obese and minority children are disproportionately affected. There are many modifiable factors associated with vitamin D deficiency in overweight and obese children. (Read the full article)

Paternal mental disorders during the postnatal period are associated with an increased risk for behavioral and emotional problems in their children; however, less is known about the effect of fathers’ mental health during pregnancy on children’s development.

The study demonstrated a positive association between fathers’ prenatal mental health and their children’s subsequent socioemotional and behavioral development. Psychological distress in fathers was associated with a risk for emotional difficulties in their children at 36 months of age. (Read the full article)

Children with sickle cell anemia are at risk of central nervous system damage, including stroke. Even children without evidence of abnormality on neuroimaging are at risk of significant declines in neurocognitive function, starting at early ages.

This study adds the observation that poorer neurocognitive and behavioral function is associated with older age in infants and toddlers with sickle cell anemia, much earlier than previously expected. (Read the full article)

A number of studies have demonstrated community acceptance of Safe Routes to School interventions as well as their success in addressing perceptions about safety, but little is known about their effectiveness in reducing pedestrian injury risk in school-aged children.

Implementation of a Safe Routes to School program in New York City may have contributed to a substantial reduction in school-aged pedestrian injury rates, with the effects largely limited to school-travel hours in census tracts with these interventions. (Read the full article)

In inverse proportion to the steadily declining under-5 mortality rate, prevalence of childhood disability has doubled in the past decade in Bangladesh. The Rapid Neurodevelopmental Assessment (RNDA) tool has been shown to be reliable and valid for assessment of a range of neurodevelopmental impairments (NDIs) and disabilities in children younger than 2 years. There is currently a lack of professional expertise for assessing NDIs in 2- to 5-year-old children in low- and middle-income countries.

We developed a set of instruments as part of the RNDA for administration by a single professional with experience in child development to assess >2- to 5-year-old children for a wide range of NDIs. The tool was acceptable to mothers, interrater reliability was high, and proportions of children with NDIs were elevated among the lowest income groups and in stunted children, demonstrating discriminant validity. The RNDA was valid for identifying >2- to 5-year-old children with a range of NDIs, especially in cognitive, behavior, and motor functions. Validity of the RNDA for vision, hearing, and seizure disorders needs further research. (Read the full article)

Peer victimization predicts numerous health risks. Lesbian, gay, and bisexual (LGB)-identified youth report greater peer victimization than do heterosexual-identified youth. No longitudinal studies have been conducted on developmental trends of peer victimization and emotional distress among LGB and heterosexual youth.

We provide the first longitudinal evidence on developmental trends of peer victimization and emotional distress for LGB- and heterosexual-identified youth. The findings suggest peer victimization of LGB-identified youth decreases in absolute, but not necessarily relative, terms and contributes to later emotional distress disparities. (Read the full article)

Among youth with asthma, tobacco smoke exposure causes increased asthma morbidity. Little is known about changes over time in tobacco smoke exposure among youth with asthma in a national sample.

Our analysis reveals a decrease in environmental tobacco smoke exposure among children and adolescents with current asthma in the United States from 1988–1994 to 2005–2010, but a majority of youth with asthma remain exposed to environmental tobacco smoke. (Read the full article)

Provider training level is associated with lower rates of successful tracheal intubation in selected neonatal settings. However, little is known about the association of training level with tracheal intubation success and adverse events in the PICU.

Our results demonstrate the association of training level on the first attempt and overall success rate as well as the incidence of adverse tracheal intubation–associated events in a large-scale, prospective assessment across 15 academic PICUs. (Read the full article)

Research indicates that adolescents who perceive their school to have a positive socioeducational environment are at reduced risk of developing depressive symptoms. However, there is limited evidence that school environments can influence adolescent emotional health independently from individual perceptions.

This multilevel longitudinal study shows that better school socioeducational environments, as assessed at the school level, reduce the prospective risk of depressive symptoms in adolescents. This association is shown to be independent from confounders and stronger in girls than boys. (Read the full article)

In humans, the brain growth spurt begins in the last trimester of pregnancy and extends through the first 2 years of life. Studies show poor cognitive and motor development among children who have iron deficiency anemia in infancy.

Prenatal iron deficiency anemia in the third trimester affects child mental development. Prenatal micronutrient supplementation with sufficient iron protects child mental development even when the woman’s iron deficiency anemia is not properly corrected during pregnancy. (Read the full article)

Impaired visual development has been reported in infants born to mothers prescribed methadone in pregnancy. Immature visual evoked potentials have been reported in this population, but data were confounded by gestation, growth restriction, and illicit drug use.

Visual evoked potentials are small and immature in infants exposed to methadone and other drugs of misuse in utero. These changes are independently associated with methadone exposure and persist after controlling for gestation, socioeconomic deprivation, alcohol consumption, and cigarette smoking. (Read the full article)

Many studies have identified an association between television viewing and antisocial behavior, although very few have been able to demonstrate a cause-and-effect sequence. The issue of whether excessive television viewing contributes to antisocial behavior remains controversial.

Excessive television viewing during childhood and adolescence was associated with objective and subjective measures of antisocial behavior in adulthood. These associations were not explained by preexisting antisocial tendencies or other potential confounders. Excessive television appears to have long-term psychosocial consequences. (Read the full article)

Trigger scores and early warning systems provide an objective measure of a patient’s condition, allowing earlier recognition of severe illness and adaptation of care. Such scores are established in adult and pediatric populations but remain unevaluated and rarely used in neonates.

This newly designed Neonatal Trigger Score provides an objective adjunct to multidisciplinary clinical assessment in detecting unwell neonates. It is more sensitive and specific than previously validated pediatric early warning system scores. (Read the full article)

Celiac disease is increasing in several countries and has emerged as a public health problem. Infant feeding has been suggested to affect celiac disease development and/or clinical expression. However, evidence-based complementary feeding strategies are limited.

Significant difference in celiac disease prevalence between 2 cohorts of 12-year-olds indicates an option for disease prevention. The cohorts differed in infant feeding, and our findings suggest that gradual introduction of gluten in small amounts during ongoing breastfeeding is favorable. (Read the full article)

Autism is a disorder that significantly affects language/communication skills, with many children not developing fluent language. The rate of spoken language acquisition after severe language delay and predictors of functional language, beyond comorbid intellectual disability, is less clear.

This study uses the largest sample to date to examine the relationship between key deficits associated with autism and attainment of phrase and/or fluent speech after a severe language delay, providing information to guide therapeutic targets and developmental expectations. (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)

Although the metabolic syndrome is associated with obesity, not all obese children have insulin resistance and metabolic syndrome, and nonobese children may develop these abnormalities. Associated factors have not been well described.

There was a 6.6% prevalence of nonobese children who were insulin-resistant, associated with a family history of hypertension. There was a 21.3% prevalence of obese who were not insulin-resistant, associated with a low waist circumference. (Read the full article)

Accurately identifying ill hospitalized children with vital signs concerning for clinical deterioration is fundamental to inpatient pediatrics. Normal vital sign ranges for healthy children are useful for outpatient practice but have limited application to detecting deterioration in the hospital setting.

Percentile curves for heart and respiratory rate in hospitalized children were developed and validated. The distributions differed from existing reference ranges and early warning scores. They may be useful to identify vital signs deviating from ranges expected among hospitalized children. (Read the full article)

Acquired widespread pain syndromes of youth are prevalent, disabling, usually unexplained, and untreatable. Small-fiber polyneuropathy causes widespread pain and multisystem complaints in older adults. Some causes are treatable. Neurodiagnostic skin biopsy, autonomic function testing, and nerve biopsy permit objective diagnosis.

It identifies definite (in 59%) and probable (in 17%) small-fiber polyneuropathy among 41 young patients with otherwise-unexplained, childhood-onset widespread pain. It characterizes this new disease’s clinical features, diagnostic, and treatment options. Some cases appeared immune mediated and responded to immunomodulatory therapies. (Read the full article)

In the only previous cross-sectional study, the quality of pediatric guidelines was rated low on the AGREE-II (Appraisal of Guidelines for Research and Evaluation II) scale. The levels of evidence used in pediatric clinical practice guidelines have never been described.

American Academy of Pediatrics guidelines score low on the AGREE-II scale. Approximately one-quarter of recommendations are based on expert opinion or no reference. These findings support the adoption of standards for guideline development and research targeted toward unsupported recommendations. (Read the full article)

Adherence to infant feeding recommendations in the United States is low. The prevalence of early introduction of solid foods (<4 months of age) in the United States has been estimated to range from 19% to 29%.

Mothers’ most commonly cited reasons for early solid food introduction include perception of readiness, hunger, wanting to feed something in addition to breast milk or formula, perception of interest in solids, advice from a clinician, and to improve infant’s sleep. (Read the full article)

A gap exists with lack of programs to help mothers breastfeed. The 2012 American Academy of Pediatrics' "Policy Statement on Breastfeeding and the Use of Human Milk" re-emphasized breastfeeding as an important public health initiative rather than a lifestyle choice.

Families who receive care in a primary care setting that has implemented a "breastfeeding-friendly" office protocol may have increased rates of exclusive breastfeeding. This study evaluated an accepted clinical protocol in a large, diverse pediatric primary care setting. (Read the full article)

At least half of the achievement gap for low-income, minority children is present at kindergarten entry; however, there are no population-level early childhood interventions that effectively engage and support families and teachers to ameliorate the impact of adversity on achievement.

This study evaluated ParentCorps, a family-centered, school-based intervention to promote self-regulation and learning for all children entering school in disadvantaged, urban neighborhoods. ParentCorps results in higher kindergarten achievement among low-income, minority children. (Read the full article)