Length of hospital stay in adolescents receiving high-dose oral contraceptive pills with and without conjugated equine estrogen for the treatment of acute abnormal uterine bleeding.

Study Objective: Compare the length of hospital stay of adolescents admitted for severe anemia (hemoglobin ≤ 8 g/dL) due to acute abnormal uterine bleeding (AUB) treated with high-dose combined oral contraceptive pills (HD-OCPs) versus those treated with HD-OCPs and intravenous conjugated equine estrogen, also referred to as dual therapy.

Design, Setting, And Participants: This is a single institution retrospective cohort study of adolescents hospitalized for the management of acute AUB and severe anemia between July 1, 2004, to January 1, 2020. Subjects were excluded if they were pregnant, had a malignancy, thrombocytopenia, treated with other hormonal therapies, or if bleeding stopped prior to admission.

The Post-Operative Handoff: Perceptions and Preferences of Pediatric Hospitalists and Surgeons.

Objective: Postoperative communication errors contribute to patient harm and excess costs. There are no existing standards for postoperative handoff to the acute care inpatient unit. We aimed to compare the experiences and preferences of pediatric hospitalists and surgeons about the content and timing of this handoff.

Standardizing and Improving Primary Care-Based Electronic Developmental Screening for Young Children in Federally Qualified Health Center Clinics.

Objectives: Many barriers to implementation of developmental screening in primary care exist, especially for children from under-resourced communities. Developmental screening is vital to early detection of developmental delay and autism spectrum disorder, and early intervention (EI) referral. This study sought to examine whether implementation of a standardized clinical workflow using electronic screening tools improved both rates of developmental screening, and the number of children identified at risk for developmental delay, in a federally qualified health center (FQHC).

Associations of Anxiety Symptoms With 6-Year Blood Pressure Changes and Incident Hypertension: Results From the Hispanic Community Health Study/Study of Latinos.

Background: Despite the high burden of anxiety and hypertension in Hispanic/Latino adults, little is known about their association in this population.

Purpose: To examine the associations of anxiety symptoms with 6-year changes in blood pressure (BP) and incident hypertension in Hispanic/Latino adults.

Methods: We examined data from a probability sample of 10,881 Hispanic/Latino persons aged 18-74 who attended visits 1 (V1; 2008-2011) and 2 (V2; 2014-2017) of the Hispanic Community Health Study/Study of Latinos (HCHS/SOL), a prospective cohort study.

Retrospective study of serial polysomnograms of bronchopulmonary dysplasia patients with oxygen dependence.

Introduction: This retrospective study describes characteristics of serial polysomnograms (PSGs) of BPD patients on home oxygen therapy and describes PSG parameters associated with discontinuation of supplemental oxygen.

Methods: A single-center study was performed at Children's Hospital Los Angeles, where serial PSGs for 44 patients with BPD infants discharged on home oxygen therapy were extracted for maximum of five PSGs or until oxygen discontinuation. Clinical and polysomnography data was collected.

Exploratory study evaluating the relationships between perinatal adversity, oxidative stress, and infant neurodevelopment across the first year of life.

Early childhood adversity increases risk for negative lifelong impacts on health and wellbeing. Identifying the risk factors and the associated biological adaptations early in life is critical to develop scalable early screening tools and interventions. Currently, there are limited, reliable early childhood adversity measures that can be deployed prospectively, at scale, to assess risk in pediatric settings.

Association of census-tract level gentrification and income inequality with 6-year incidence of metabolic syndrome in the Hispanic Community Health Study/Study of Latinos, an epidemiologic cohort study.

Background: Metabolic syndrome varies by socio-demographic characteristics, with younger (18-29 years) and older (50-69 years) Hispanic/Latino having higher prevalence compared to other groups. While there is substantial research on neighborhood influences on cardiometabolic health, there are mixed findings regarding the effects of gentrification and few studies have included Hispanic/Latinos. The role of neighborhood income inequality on metabolic health remains poorly understood.

Lower levels of Th1 and Th2 cytokines in cerebrospinal fluid (CSF) at the time of initial CSF shunt placement in children are associated with subsequent shunt revision surgeries.

Objective: We compare cytokine profiles at the time of initial CSF shunt placement between children who required no subsequent shunt revision surgeries and children requiring repeated CSF shunt revision surgeries for CSF shunt failure. We also describe the cytokine profiles across surgical episodes for children who undergo multiple subsequent revision surgeries.

Methods: This pilot study was nested within an ongoing prospective multicenter study collecting CSF samples and clinical data at the time of CSF shunt surgeries since August 2014.

Differences in gut microbiota and fecal bile acids between Caucasian and Hispanic children and young adults with ulcerative colitis.

Ulcerative Colitis (UC) is an inflammatory bowel disease (IBD) that has been associated with gut dysbiosis. Changes in the gut microbiome lead to changes in bile acids (BA) metabolism, which changes the BA profiles in patients with UC. We conducted this study to investigate the differences in bile acids and gut microbiota between Hispanic and Caucasian children and young adults with UC.

Nutritional Blood Concentration Biomarkers in the Hispanic Community Health Study/Study of Latinos: Measurement Characteristics and Power.

Measurement error is a major issue in self-reported diet that can distort diet-disease relationships. Use of blood concentration biomarkers has the potential to mitigate the subjective bias inherent in self-reporting. As part of the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) baseline visit (2008-2011), self-reported information on diet was collected from all participants (n = 16,415).

StocSum: stochastic summary statistics for whole genome sequencing studies.

Genomic summary statistics, usually defined as single-variant test results from genome-wide association studies, have been widely used to advance the genetics field in a wide range of applications. Applications that involve multiple genetic variants also require their correlations or linkage disequilibrium (LD) information, often obtained from an external reference panel. In practice, it is usually difficult to find suitable external reference panels that represent the LD structure for underrepresented and admixed populations, or rare genetic variants from whole genome sequencing (WGS) studies, limiting the scope of applications for genomic summary statistics.

Rapid Decline in β-Cell Function and Increasing Adiposity Are Associated With Conversion to Type 2 Diabetes in At-Risk Latino Youth.

Unlabelled: Youth-onset type 2 diabetes (T2D) is becoming increasingly prevalent, especially among Latino youth, and there is limited information on its pathophysiology and causative factors. Here, we describe findings from a longitudinal cohort study in 262 Latino children with overweight/obesity at risk of developing T2D with annual measures of oral and intravenous glucose tolerance (IVGTT), body composition, and fat distribution. Logistic binomial regression was used to identify significant predictors in those who developed T2D compared with matched control participants, and mixed-effects growth models were used to compare rates of change in metabolic versus adiposity measures between groups.

Serum 1,25-dihydroxyvitamin D levels in the diagnosis and pathogenesis of nutritional rickets - a multivariable re-analysis of a case-control study.

Background: A multivariable logistic regression model resulting from a case-control study of nutritional rickets in Nigerian children suggested that higher levels of serum 25(OH)D may be required to prevent nutritional rickets in populations with low-calcium intakes.

Objectives: This current study evaluates if adding serum 1,25-dihydroxyvitamin D [1,25(OH)D] to that model shows that increased levels of serum 1,25(OH)D are independently associated with risk of children on low-calcium diets having nutritional rickets.

Methods: Multivariable logistic regression analysis was used to model the association between serum 1,25(OH)D and risk of having nutritional rickets in cases (n = 108) and controls (n = 115) after adjusting for age, sex, weight-for age z-score, religion, phosphorus intake and age began walking and the interaction between serum 25(OH)D and dietary calcium intake (Full Model).

Assessment of the Relationship Between Inflammation and Glomerular Filtration Rate.

Background: Chronic kidney disease (CKD) is a global health problem. As it progresses to end stages, renal replacement therapy is required but ultimately, the best treatment is transplantation. Decreased renal function has been associated with an inflammatory state associated to primary CKD and in kidney transplant recipients (KTRs).

Association of neighborhood segregation with 6-year incidence of metabolic syndrome in the Hispanic community health study/study of Latinos.

Purpose: Examine the association between neighborhood segregation and 6-year incident metabolic syndrome (MetSyn) in the Hispanic Community Health Study/Study of Latinos.

Methods: Prospective cohort of adults residing in Miami, Chicago, the Bronx, and San Diego. The analytic sample included 6,710 participants who did not have MetSyn at baseline.

Accelerometer-Measured Latent Physical Activity Profiles and Neurocognition Among Middle-Aged and Older Hispanic/Latino Adults in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL).

Objectives: Derive latent profiles of accelerometry-measured moderate-vigorous physical activity (MVPA) for Hispanic/Latino adults, examine associations between latent MVPA profiles and neurocognition, and describe profiles via self-reported MVPA.

Methods: Complex survey design methods were applied to cross-sectional data from 7,672 adults ages 45-74 years in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL; 2008-2011). MVPA was measured via hip-worn accelerometers.

Towards harmonization of directly measured free 25-hydroxyvitamin D using an enzyme-linked immunosorbent assay.

The majority of circulating 25-hydroxyvitamin D (25(OH)D) is protein bound and perhaps less available than the free fraction of 25(OH)D; therefore, researchers have proposed that the measurement of free 25(OH)D in human serum may be a better indicator of vitamin D health status than total 25(OH)D. The availability of a new enzyme-linked immunosorbent assay (ELISA) for the determination of free 25(OH)D provides a method for direct measurement of the low levels of non-protein bound 25(OH)D. As an initial step towards harmonization of measurements of free 25(OH)D, the ELISA was used to measure free 25(OH)D in three existing Standard Reference Materials (SRMs): SRM 972a Vitamin D Metabolites in Frozen Human Serum, SRM 2973 Vitamin D Metabolites in Frozen Human Serum (High Level), and SRM 1949 Frozen Prenatal Human Serum.

Early-Onset Late Gadolinium Enhancement is a Prognostic Factor for Duchenne Cardiomyopathy.

Dilated cardiomyopathy (DCM) is an inevitable complication of Duchenne muscular dystrophy (DMD). Late gadolinium enhancement (LGE) demonstrated by cardiac MRI occurs in DMD-related DCM, indicating myocyte death and remodeling. We conducted a retrospective chart review identifying DMD patients in our center between January 2009 and July 2013.

Preventing caesarean section wound complications: use of a silver-impregnated antimicrobial occlusive dressing.

Objective: To investigate the role of an adherent soft silicone antimicrobial occlusive foam silver-impregnated dressing for reduction of surgical site infections (SSI) in primary low-transverse caesarean section (1°LTCS) delivery.

Method: Women aged 18-45 years admitted to the labour and delivery or the antepartum unit undergoing a 1°LTCS were recruited. Exclusion criteria included repeat caesarean, vertical skin incision, intrapartum fever and closure with staples.

Citizenship Status and Mortality Among Young Latino Adults in the U.S., 1998‒2015.

Introduction: Although Latino immigrants, especially noncitizens, endure structural factors that may increase their risk of death at younger ages, little is known about their risk of death in young adulthood. This study evaluates mortality differences across citizenship status among young Latino adults (aged 18-44 years) in the U.S.