bluuebunny/crossref_metadata_2025_split huggingface dataset:
Longitudinal Study of Viewing Smoking in Movies and Initiation of Smoking by Children
Authors: Titus-Ernstoff Linda , Dalton Madeline A. , Adachi-Mejia Anna M. , Longacre Meghan R. , Beach Michael L. 
Published: December 2007

BACKGROUND. Previous studies showed an association between viewing of smoking in movies and initiation of smoking among adolescents. However, all studies except one were cross-sectional, and none updated movie smoking exposure prospectively or assessed its influence on children.
METHODS. We enrolled elementary school students, 9 to 12 years of age, in a longitudinal study to assess the influence of movie smoking exposure on smoking initiation among children. Movie smoking content was coded for the most popular movie releases; exposure was assessed by asking children which movies they had seen, on the basis of unique lists of 50 movies sampled randomly from top box office hits and video rentals. Data collection occurred in 3 waves (the baseline survey and 2 follow-up surveys), ∼1 year apart. Movie lists were updated for each data collection wave, to reflect recent releases. Movie smoking exposure was analyzed in relation to smoking initiation by the end of the study period.
RESULTS. Approximately 80% of the children's smoking exposure occurred through movies rated G, PG, or PG-13. Children's movie smoking exposure predicted smoking initiation significantly, after adjustment for multiple covariates including child and parent characteristics. The relative risks were 1.09, 1.09, and 1.07 for a 1-decile increase of movie smoking exposure measured at the baseline, second, and third data collection waves, respectively. The adjusted attributable risk of smoking initiation attributable to movie smoking exposure was 0.35.
CONCLUSION. Our study, which is the first to enroll children in elementary school and to update movie smoking exposure longitudinally, indicates that early exposure has as much influence on smoking risk as does exposure nearer the outcome. Overall, movie smoking may be responsible for at least one third of smoking initiation for children in this age group.
Decreased Incidence of Bronchopulmonary Dysplasia After Early Management Changes, Including Surfactant and Nasal Continuous Positive Airway Pressure Treatment at Delivery, Lowered Oxygen Saturation Goals, and Early Amino Acid Administration: A Historical Cohort Study
Authors: Geary Cara , Caskey Melinda , Fonseca Rafael , Malloy Michael 
Published: December 2007

OBJECTIVE. The goal was to investigate the clinical impact of 3 early management practice changes for infants of ≤1000 g.METHODS. We performed an historical cohort study of appropriately sized, preterm infants without congenital anomalies who were born between January 2001 and June 2002 (pre–early management practice change group; n = 87) and between July 2004 and December 2005 (post–early management practice change group; n = 76).RESULTS. Only 1 (1%) of 87 infants in the pre–early management practice change group received continuous positive airway pressure treatment in the first 24 hours of life, compared with 61 (80%) of 76 infants in the post–early management practice change group. The proportions of infants who required any synchronized intermittent mandatory ventilation during their hospital stays were 98.8% and 59.5%, respectively. The mean durations of synchronized intermittent mandatory ventilation were 35 days and 15 days, respectively. The combined incidence rates of moderate and severe bronchopulmonary dysplasia at corrected gestational age of 36 weeks were 43% and 24%, respectively. The use of vasopressor support for hypotension in the first 24 hours of life decreased from 39.1% (before early management practice changes) to 19.7% (after practice changes), the cumulative days of oxygen therapy decreased from 77 ± 52 days to 56 ± 47 days, and the proportions of infants discharged with home oxygen therapy decreased from 25.7% to 10.1%; the incidence of patent ductus arteriosus requiring surgical ligation increased from 1% to 10%.There were no differences in rates of death, intraventricular hemorrhage, periventricular leukomalacia, pneumothorax, necrotizing enterocolitis, or retinopathy of prematurity.CONCLUSIONS. Successful early management of extremely preterm infants with surfactant treatment followed by continuous positive airway pressure treatment at delivery, lowered oxygen saturation goals, and early amino acid supplementation is possible and is associated with reductions in the incidence and severity of bronchopulmonary dysplasia.
Adolescent Varicocele: Who Is at Risk?
Authors: Kumanov Philip , Robeva Ralitsa N. , Tomova Analia 
Published: December 2007

OBJECTIVES. Varicocele results from the abnormal dilation of the veins of the pampiniform plexus and is the most common identifiable cause of male infertility. It can develop during puberty and thus affect the testicular growth and function. The aim of this study was to determine the prevalence and the risk factors for the development of the varicocele among Bulgarian boys.
METHODS. In a prospective study, 6200 boys from 5 regions of the country aged 0 to 19 years were evaluated for varicocele. All were clinically healthy. Height, weight, testicular volumes, penile length, and penile circumference were also examined.
RESULTS. Varicocele was found in 4.1% of all investigated boys, whereas in the age group 10 to 19 years, it was 7.9%. After adjustment for age, the negative factors associated with the development of the disorder were height, penile length, and penile circumference, whereas the weight and BMI had a protective role. The prevalence of varicocele demonstrated clear regional differences, and it was found significantly more often among dark-eyed boys. The incidence of the disease increased rapidly during midpuberty.
CONCLUSIONS. The incidence of varicocele is related to some somatometric parameters and with the accelerated pubertal development. Longitudinal studies are needed to clarify better the relations between the adolescent varicocele and puberty.
Managing Attention-Deficit/Hyperactivity Disorder in Primary Care: A Systematic Analysis of Roles and Challenges
Authors: Power Thomas J. , Mautone Jennifer A. , Manz Patricia H. , Frye Leslee , Blum Nathan J. 
Published: December 2007

OBJECTIVE. This study was designed to investigate the perceptions of primary care providers about their roles and the challenges of managing attention-deficit/hyperactivity disorder and to evaluate differences between providers who serve families primarily from urban versus suburban settings.
METHODS. The ADHD Questionnaire was developed to assess primary care provider views about the extent to which clinical activities that are involved in the management of attention-deficit/hyperactivity disorder are appropriate and feasible in primary care. Participants were asked to rate each of 24 items of the questionnaire twice: first to indicate the appropriateness of the activity given sufficient time and resources and second to indicate feasibility in their actual practice. Informants used a 4-point scale to rate each item for appropriateness and feasibility.
RESULTS. An exploratory factor analysis of primary care provider ratings of the appropriateness of clinical activities for managing attention-deficit/hyperactivity disorder identified 4 factors of clinical practice: factor 1, assessing attention-deficit/hyperactivity disorder; factor 2, providing mental health care; factor 3, recommending and monitoring approved medications; and factor 4, recommending nonapproved medications. On a 4-point scale (1 = not appropriate to 4 = very appropriate), mean ratings for items on factor 1, factor 2, and factor 3 were high, indicating that the corresponding domains of practice were viewed as highly appropriate. Feasibility challenges were identified on all factors, but particularly factors 1 and 2. A significant interaction effect, indicating differences between appropriateness and feasibility as a function of setting (urban versus suburban), was identified on factor 1. The challenges of assessing attention-deficit/hyperactivity disorder were greater for urban than for suburban primary care providers.
CONCLUSIONS. Primary care providers believe that it is highly appropriate for them to have a role in the management of attention-deficit/hyperactivity disorder. Feasibility issues were particularly salient related to assessing attention-deficit/hyperactivity disorder and providing mental health care. The findings highlight the need not only for additional training of primary care providers but also for practice-based resources to assist with school communication and collaboration with mental health agencies, especially in urban practices.
CoolSim: Using Industrial Modeling Techniques to Examine the Impact of Selective Head Cooling in a Model of Perinatal Regionalization
Authors: Gray James , Geva Alon , Zheng Zheng , Zupancic John A. F. 
Published: December 2007

OBJECTIVE. A selective head-cooling device for the treatment of moderate to severe hypoxic-ischemic encephalopathy has been approved by the Food and Drug Administration for use in the United States. To reflect the complexity of health care delivery at the systems level, we used the industrial modeling technique of discrete event simulation to analyze the impact of various deployment strategies for selective head cooling and its partner technology, amplitude-integrated electroencephalography.METHODS. We modeled the course through the perinatal system of all births in Massachusetts over a 1-year period. Cohort and care characteristics were drawn from existing databases. Results of a recently published trial were used to estimate the effects of selective head cooling. One thousand cohort replications were conducted to assess uncertainty. Several policy alternatives were examined, including no use of selective head cooling and scenarios that altered the number and placement of selective head-cooling and amplitude-integrated electroencephalography units throughout the state. Patient-level outcome and cost data were assessed.RESULTS. For all scenarios tested, the use of amplitude-integrated electroencephalography/selective head cooling resulted in better outcomes at lower cost. However, substantial differences in transfer rates, failure-to-cool rates, and total costs were seen across scenarios. Optimal decision-making regarding the number and placement of devices led to a 16% improvement in cost savings and a 10-fold decrease in failure-to-cool rates, compared with other deployment scenarios. These results were insensitive to significant changes in model inputs.CONCLUSIONS. On the basis of currently available data, the package of amplitude-integrated electroencephalography and selective head cooling seems to be an economically desirable intervention. Quantifiable techniques to assess system-wide technology performance provide a powerful approach to informing decisions regarding the structure and function of health care systems.
Treatment for Retinopathy of Prematurity in Denmark in a Ten-Year Period (1996–2005): Is the Incidence Increasing?
Authors: Slidsborg Carina , Olesen Henrik Bom , Jensen Peter Koch , Jensen Hanne , Nissen Kamilla Rothe , Greisen Gorm , Rasmussen Steen , Fledelius Hans Callø , la Cour Morten 
Published: December 2007

OBJECTIVE. The objective of this study was to analyze the population incidence of retinopathy of prematurity treatment in Denmark in the 10-year period from 1996 to 2005.METHODS. Patient charts of infants treated for retinopathy of prematurity and the national birth registry provide information about neonatal parameters. These parameters, along with birth in the latter half of the period (2001–2005), were analyzed as risk factors for retinopathy of prematurity. The national registry for blind and visually impaired children was accessed to obtain information about visual impairment attributable to retinopathy of prematurity in both treated and untreated infants.RESULTS. The study population consisted of 5467 Danish preterm infants born in 1996 to 2005, with a gestational age of &lt;32 weeks, who survived for ≥5 postnatal weeks; 2616 were born in 1996 to 2000, and 2851 were born in 2001 to 2005. The incidence of treated retinopathy of prematurity cases increased significantly from 1.3% in 1996 to 2000 to 3.5% in 2001 to 2005. Significant risk factors for retinopathy of prematurity treatment were low gestational age, small for gestational age, male gender, and multiple birth. Other, yet unknown factors contributed to the increased incidence in the latter half of the period. Of the study population, 0.6% were registered as visually impaired because of retinopathy of prematurity within 2 years after birth (early-detected visual impairment). The incidences were not significantly different between 1996 to 2000 and 2001 to 2005. Of all of the early-detected, visually impaired children, 16% had not been treated for retinopathy of prematurity and were considered screening failures.CONCLUSIONS. The incidence of retinopathy of prematurity treatment in Denmark has more than doubled during the past half-decade. This increase could not be fully explained by increased survival rates for the infants or by changes in the investigated neonatal risk factors.
Impact of a 16-Community Trial to Promote Judicious Antibiotic Use in Massachusetts
Authors: Finkelstein Jonathan A. , Huang Susan S. , Kleinman Ken , Rifas-Shiman Sheryl L. , Stille Christopher J. , Daniel James , Schiff Nancy , Steingard Ron , Soumerai Stephen B. , Ross-Degnan Dennis , Goldmann Donald , Platt Richard 
Published: December 2007

OBJECTIVES. Reducing unnecessary antibiotic use, particularly among children, continues to be a public health priority. Previous intervention studies have been limited by size or design and have shown mixed results. The objective of this study was to determine the impact of a multifaceted, community-wide intervention on overall antibiotic use for young children and on use of broad-spectrum agents. In addition, we sought to compare the intervention's impact on commercially and Medicaid-insured children.METHODS. We conducted a controlled, community-level, cluster-randomized trial in 16 nonoverlapping Massachusetts communities, studied from 1998 to 2003. During 3 years, we implemented a physician behavior-change strategy that included guideline dissemination, small-group education, frequent updates and educational materials, and prescribing feedback. Parents received educational materials by mail and in primary care practices, pharmacies, and child care settings. Using health-plan data, we measured changes in antibiotics dispensed per person-year of observation among children who were aged 3 to &lt;72 months, resided in study communities, and were insured by a participating commercial health plan or Medicaid.RESULTS. The data include 223135 person-years of observation. Antibiotic-use rates at baseline were 2.8, 1.7, and 1.4 antibiotics per person-year among those aged 3 to &lt;24, 24 to &lt;48, and 48 to &lt;72 months, respectively. We observed a substantial downward trend in antibiotic prescribing, even in the absence of intervention. The intervention had no additional effect among children aged 3 to &lt;24 months but was responsible for a 4.2% decrease among those aged 24 to &lt;48 months and a 6.7% decrease among those aged 48 to &lt;72 months. The intervention effect was greater among Medicaid-insured children and for broad-spectrum agents.CONCLUSIONS. A sustained, multifaceted, community-level intervention was only modestly successful at decreasing overall antibiotic use beyond substantial secular trends. The more robust impact among Medicaid-insured children and for specific medication classes provides an argument for specific targeting of resources for patient and physician behavior change.
Medication Administration Variances Before and After Implementation of Computerized Physician Order Entry in a Neonatal Intensive Care Unit
Authors: Taylor James A. , Loan Lori A. , Kamara Judy , Blackburn Susan , Whitney Donna 
Published: December 2007

OBJECTIVE. The goal was to determine whether implementation of a computerized physician order entry system was associated with a decrease in medication administration variances in a NICU.
METHODS. A prospective observational study was conducted. Research nurses recorded details of medication administrations for patients in a NICU during standardized observation periods. Details of each administration were compared with the medication order; a variance was defined as a discrepancy between the order and the medication administration. Rates of variances before and after implementation of computerized physician order entry in the NICU were compared. Specific types of and reasons for variances were also compared.
RESULTS. Data on 526 medication administrations, including 254 during the pre-computerized physician order entry period and 272 after implementation of computerized physician order entry, were collected. Medication variances were detected for 19.8% of administrations during the pre-computerized physician order entry period, compared with 11.6% with computerized physician order entry (rate ratio: 0.53). Overall, administration mistakes, prescribing problems, and pharmacy problems accounted for 74% of medication variances; there were no statistically significant differences in rates for any of these specific reasons before versus after introduction of computerized physician order entry. Administration of a medication at the wrong time accounted for 53.1% of all variances. Variance rates related to giving a drug at the wrong time were significantly lower in the computerized physician order entry period than in the pre-computerized physician order entry period (rates: 6.7% and 9.9%, respectively; rate ratio: 0.53).
CONCLUSIONS. Implementation of computerized physician order entry in a NICU was associated with a significant decrease in the rate of medication administration variances. However, even with the use of computerized physician order entry, variances were noted for &gt;11% of all medication administrations, which suggests that additional methods may be needed to improve neonatal patient safety.
Impact of Patent Ductus Arteriosus and Subsequent Therapy With Indomethacin on Cerebral Oxygenation in Preterm Infants
Authors: Lemmers Petra M. A. , Toet Mona C. , van Bel Frank 
Published: December 2007

OBJECTIVES. A hemodynamically important patent ductus arteriosus is a common problem in the first week of life in the preterm infant. Although patent ductus arteriosus induces alterations in organ perfusion, scarce information is available of the impact of patent ductus arteriosus and its subsequent treatment on the oxygen supply and oxygen extraction of the brain. We investigated the impact of patent ductus arteriosus and its treatment with indomethacin on regional cerebral oxygen saturation and fractional tissue oxygen extraction by using near-infrared spectroscopy.PATIENTS AND METHODS. Twenty infants with patent ductus arteriosus (gestational age: &lt;32 weeks), subsequently treated with indomethacin, were monitored for mean arterial blood pressure, arterial oxygen saturation, near-infrared spectroscopy–determined regional cerebral oxygen saturation, and fractional tissue oxygen extraction ([arterial oxygen saturation − regional cerebral oxygen saturation]/arterial oxygen saturation). Ten-minute periods were selected and averaged during patent ductus arteriosus, at 10, 20, 30, 60, and 120 minutes, and at 6,12, 24, and 36 hours after starting indomethacin treatment (to ductal closure) for mean arterial blood pressure, arterial oxygen saturation, regional cerebral oxygen saturation, and fractional tissue oxygen extraction. The patients with patent ductus arteriosus were matched for gestational age, birth weight, postnatal age, and severity of respiratory distress syndrome with infants without patent ductus arteriosus, who served as control subjects.RESULTS. Mean arterial blood pressure and regional cerebral oxygen saturation were significantly lower and fractional tissue oxygen extraction significantly higher compared with the control infants during patent ductus arteriosus (mean arterial blood pressure: 33 ± 5 vs 38 ± 6 mmHg; regional cerebral oxygen saturation: 62% ± 9% vs 72% ± 10%; fractional tissue oxygen extraction: 0.34 ± 0.1 vs 0.25 ± 0.1, respectively). Regional cerebral oxygen saturation and fractional tissue oxygen extraction were lower and higher, respectively, up to 24 hours after the start of indomethacin but normalized to control values afterward. Indomethacin had no additional negative effect on cerebral oxygenation.CONCLUSIONS. A hemodynamically significant patent ductus arteriosus has a negative effect on cerebral oxygenation in the premature infant. Subsequent and adequate treatment of a patent ductus arteriosus may prevent diminished cerebral perfusion and subsequent decreased oxygen delivery, which reduces the change of damage to the vulnerable immature brain.
Comparison of Buccal Midazolam With Rectal Diazepam in the Treatment of Prolonged Seizures in Ugandan Children: A Randomized Clinical Trial
Authors: Mpimbaza Arthur , Ndeezi Grace , Staedke Sarah , Rosenthal Philip J. , Byarugaba Justus 
Published: December 2007

OBJECTIVE. Our goal was to compare the efficacy and safety of buccal midazolam with rectal diazepam in the treatment of prolonged seizures in Ugandan children.
METHODS. This was a single-blind, randomized clinical trial in which 330 patients were randomly assigned to receive buccal midazolam or rectal diazepam. The trial was conducted in the pediatric emergency unit of the national referral hospital of Uganda. Consecutive patients who were aged 3 months to 12 years and presented while convulsing or who experienced a seizure that lasted &gt;5 minutes were randomly assigned to receive buccal midazolam plus rectal placebo or rectal diazepam plus buccal placebo. The primary outcome of this study was cessation of visible seizure activity within 10 minutes without recurrence in the subsequent hour.
RESULTS. Treatment failures occurred in 71 (43.0%) of 165 patients who received rectal diazepam compared with 50 (30.3%) of 165 patients who received buccal midazolam. Malaria was the most common underlying diagnosis (67.3%), although the risk for failure of treatment for malaria-related seizures was similar: 35.8% for rectal diazepam compared with 31.8% for buccal midazolam. For children without malaria, buccal midazolam was superior (55.9% vs 26.5%). Respiratory depression occurred uncommonly in both of the treatment arms.
CONCLUSION. Buccal midazolam was as safe as and more effective than rectal diazepam for the treatment of seizures in Ugandan children, although benefits were limited to children without malaria.