Geographic variability in childhood asthma prevalence in Chicago

Short Report: Exploring the Effect of Prenatal Fatty Acid Supplementation on Wheeze and Asthma in Black American Children

Background

Black American children are at higher risk for developing asthma than White children. Identifying potential scalable preventive interventions that can reduce the racial disparities in asthma prevalence and associated morbidity and mortality are needed. We leveraged data from an RCT of prenatal supplementation with docosahexaenoic acid (DHA) in Black American women, to explore whether prenatal fatty acid supplementation is associated with offspring wheeze and asthma.

Methods

Data were from the Nutrition and Pregnancy Study (NAPS), a double-blind RCT of prenatal DHA supplementation in Black women targeting stress regulation during pregnancy. A subset of mothers (n = 83) completed a standardized questionnaire on offspring wheeze and asthma when children were between 0.5 and 5.5 years of age. DHA levels were measured from venous blood and reported as percent of total fatty acids.

Results

Of the 83 mothers providing data on child wheeze and asthma, 57 (68.7%) had been randomized to active DHA and 26 (31.3%) to placebo. Mothers and research staff were blind to group assignment. Comparison at the group assignment level yielded a relative reduction of 32% in the rate of wheeze or asthma among offspring of mothers assigned to active DHA compared to offspring of mothers assigned to placebo (OR = 1.6 [95% CI = 0.50-5.09], p = 0.426). DHA levels measured at 25-29 and 33-37 weeks of gestation differed as a function of offspring wheeze or asthma (t = 2.21, p = 0.015 and t = 2.54, p = 0.007, respectively).

Conclusion

These preliminary data suggest that increasing prenatal levels of DHA could be considered as a potential prevention for asthma in Black American children.

Social deprivation and spatial clustering of childhood asthma in Australia

BACKGROUND

Asthma is the most common chronic respiratory illness among children in Australia. While childhood asthma prevalence varies by region, little is known about variations at the small geographic area level. Identifying small geographic area variations in asthma is critical for highlighting hotspots for targeted interventions. This study aimed to investigate small area-level variation, spatial clustering, and sociodemographic risk factors associated with childhood asthma prevalence in Australia.

METHODS

Data on self-reported (by parent/carer) asthma prevalence in children aged 0-14 years at statistical area level 2 (SA2, small geographic area) and selected sociodemographic features were extracted from the national Australian Household and Population Census 2021. A spatial cluster analysis was used to detect hotspots (i.e., areas and their neighbours with higher asthma prevalence than the entire study area average) of asthma prevalence. We also used a spatial Bayesian Poisson model to examine the relationship between sociodemographic features and asthma prevalence. All analyses were performed at the SA2 level.

RESULTS

Data were analysed from 4,621,716 children aged 0-14 years from 2,321 SA2s across the whole country. Overall, children's asthma prevalence was 6.27%, ranging from 0 to 16.5%, with significant hotspots of asthma prevalence in areas of greater socioeconomic disadvantage. Socioeconomically disadvantaged areas had significantly higher asthma prevalence than advantaged areas (prevalence ratio [PR] = 1.10, 95% credible interval [CrI] 1.06-1.14). Higher asthma prevalence was observed in areas with a higher proportion of Indigenous individuals (PR = 1.13, 95% CrI 1.10-1.17).

CONCLUSIONS

We identified significant geographic variation in asthma prevalence and sociodemographic predictors associated with the variation, which may help in designing targeted asthma management strategies and considerations for service enhancement for children in socially deprived areas.

Revealing polygenic pleiotropy using genetic risk scores for asthma

In this study we examined how genetic risk for asthma associates with different features of the disease and with other medical conditions and traits. Using summary statistics from two multi-ancestry genome-wide association studies of asthma, we modeled polygenic risk scores (PRSs) and validated their predictive performance in the UK Biobank. We then performed phenome-wide association studies of the asthma PRSs with 371 heritable traits in the UK Biobank. We identified 228 total significant associations across a variety of organ systems, including associations that varied by PRS model, sex, age of asthma onset, ancestry, and human leukocyte antigen region alleles. Our results highlight pervasive pleiotropy between asthma and numerous other traits and conditions and elucidate pathways that contribute to asthma and its comorbidities.

Evaluating inhaler education interventions for hospitalized children with asthma: A randomized controlled trial

BACKGROUND

Most children with asthma have poor inhaler technique, with detrimental morbidity effects. Guidelines recommend clinicians provide inhaler education at every opportunity, yet resources are limited. A low-cost, technology-based intervention-Virtual Teach-to-Goal (V-TTG)-was developed to deliver tailored inhaler technique education with high fidelity.

OBJECTIVE

To evaluate whether V-TTG leads to less inhaler misuse among children with asthma who are hospitalized vs brief intervention (BI, reading steps aloud).

METHODS

A single-center randomized controlled trial of V-TTG vs BI was conducted with 5-to-10-year-old children with asthma hospitalized between January 2019 and February 2020. Inhaler technique was assessed pre- and post-education using 12-step validated checklists (misuse: < 10 steps correct).

RESULTS

Among 70 children enrolled, mean age was 7.8 years (SD = 1.6). Most (86%) were Black. Most had an emergency department visit (94%) or hospitalization (90%) in the previous year. At baseline, nearly all children misused inhalers (96%). The proportion of children with inhaler misuse decreased significantly in V-TTG (100%→74%, P = .002) and BI (92%→69%, P = .04) groups, with no difference between groups at both time points (P = .2 and .9). On average, children performed 1.5 more steps correctly (SD = 2.0), with greater improvement with V-TTG (mean [SD] = 1.7 [1.6]) vs BI (mean [SD] = 1.4 [2.3]), though not significant (P = .6). Concerning pre and post technique, older children were significantly more likely than younger children to show more correct steps (mean change = 1.9 vs 1.1, P = .002).

CONCLUSION

A technology-based intervention for tailored inhaler education led to improved technique among children, similarly to reading steps aloud. Older children saw greater benefits. Future studies should evaluate the V-TTG intervention across diverse populations and disease severities to identify the greatest impact.

CLINICAL TRIAL REGISTRATION

NCT04373499.

Pursuing a Cross-Sector Approach to Advance Child Health Equity

Cross-sector partnerships are essential to ensure a safe and effective system of care for children, their caregivers, and communities. A "system of care" should have a well-defined population, vision, and measures shared by health care and community stakeholders, and an efficient modality for tracking progress toward better, more equitable outcomes. Effective partnerships could be clinically integrated, built atop coordinated awareness and assistance, and community-connected opportunities for networked learning. As opportunities for partnership continue to be uncovered, it will be vital to broadly assess their impact, using clinical and nonclinical metrics.

Ensuring equitable access to guideline-based asthma care across the lifespan: Tips and future directions to the successful implementation of the new NAEPP 2020 guidelines, a Work Group Report of the AAAAI Asthma, Cough, Diagnosis, and Treatment Committee

The most recent recommendations from the 2020 National Asthma Education and Prevention Program Update and Global Initiative for Asthma 2021 guide evidence-based clinical decision making. However, given the present state of health disparities by age, income, and race, the equitable implementation and dissemination of these guidelines will be unlikely without further guidance. This work group report reviews the current state of the new asthma guideline implementation; presents updated evidence-based therapeutic options with attention to specific patient populations; and addresses barriers to the implementation of these guidelines in minoritized, historically marginalized, and underresourced communities. Allergists and immunologists can use practical ways to accomplish the goals of improved asthma care access and advanced asthma care across the life span, with specific considerations to historically marginalized populations. Modifiable barriers to guideline implementation include financial barriers, environmental factors, and allergy subspecialty access and care coordination. Various programs to improve access to guideline-based asthma care include community programs, school-based asthma programs, and digital health solutions, with an emphasis on reducing disparities by race.

CHECK: Multi-level Real-World Pediatric Asthma Care Coordination: Results and Lessons Learned

OBJECTIVE

Because asthma health disparities in children remain common, innovative approaches to obtain asthma health equity are essential. Comprehensive care coordination programs may address the social determinants of health that influence these disparities. This analysis aims to ascertain if receipt of Coordination of Healthcare for Complex Kids (CHECK) program services was associated with changes in school absence, cost, healthcare utilization, and controller prescription in children with asthma.

METHODS

The CHECK program ran from December 1^st, 2014 through August 31^st, 2017. Engagement with Community Health Workers (CHW) was rolling and targeted based on risk level (low, medium or high determined by healthcare utilization). This analysis included school-aged children with asthma (n = 2,629) and sufficient Chicago Public Schools attendance data (n = 430).

RESULTS

Children engaged in CHECK were more likely to be female (p = 0.046) and to identify as Black and/or Hispanic/Latino than enrolled-only children. School absence was not different between the groups. Average total cost for engaged children was 21.3% more than enrolled-only children the first year (p = 0.027) but did not differ by the second year (p = 0.948). At baseline, 68.1% of the cohort had at least one ED visit 12-months prior to CHECK, this reduced to 49.5% post-1 and 41.9% post-2. Engaged children were 21% more likely to visit an ED (p = 0.010) and 40% more likely to have a controller.

CONCLUSIONS

CHECK program receipt was associated with reduced costs and improved healthcare utilization, and controller prescriptions. School attendance did not change. The CHECK model offers potential pathways to support low-income children with asthma.

Asthma and technology in emerging African American adults (The ATHENA Project): Protocol for a trial using the Multiphase Optimization Strategy framework (Preprint)

Background

Asthma causes substantial morbidity and mortality in the United States, particularly among African American emerging adults (AAEAs; aged 18-30 years), but very few asthma programs have targeted this population. Interventions that provide education and address underlying motivation for managing asthma may be the most effective. However, intensive face-to-face interventions are often difficult to implement in this population.

Objective

The purpose of this study is to develop an effective mobile asthma management intervention to improve control among AAEAs.

Methods

We will assess the ability of multiple technologic components to assist and improve traditional asthma education. The first component is the Motivational Enhancement System for asthma management. It is a mobile 4-session intervention using supported self-regulation and motivational interviewing. Personalized content is based on each participant’s activity level, daily experiences, and goals. The second component is supportive accountability. It is administered by asthma nurses using targeted mobile support (Skype/voice calls) to provide education, promote self-efficacy, and overcome barriers through a motivational interviewing–based framework. The third component is SMS text messaging. It provides reminders for asthma education, medication adherence, and physical activity. The fourth component is physical activity tracking. It uses wearable technology to help meet user-defined physical activity goals. Using a multiphase optimization strategy (MOST) framework, we will test intervention components and combinations of components to identify the most effective mobile intervention. The MOST framework is an innovative, and cost- and time-effective framework that uses engineering principles to produce effective behavioral interventions. We will conduct a component selection experiment using a factorial research design to build an intervention that has been optimized for maximum efficacy, using a clinically significant improvement in asthma. Participants (N=180) will be randomized to 1 of 6 intervention arms. Participants will be recruited from multiple sites of the American Lung Association-Airway Clinical Research Centers network and ambulatory care clinics at the Detroit Medical Center. Data collections will occur at baseline, and 3, 6, and 12 months.

Results

At study completion, we will have an empirically supported optimized mobile asthma management intervention to improve asthma control for AAEAs. We hypothesize that postintervention (3, 6, and 12 months), participants with uncontrolled asthma will show a clinically significant improvement in asthma control. We also hypothesize that improvements in asthma management behaviors (including physical activity), quality of life, symptoms, adherence, and exacerbation (secondary outcomes) will be observed.

Conclusions

AAEAs are disproportionately impacted by asthma, but have been underrepresented in research. Mobile asthma management interventions may help improve asthma control and allow people to live healthier lives. During this project, we will use an innovative strategy to develop an optimized mobile asthma management intervention using the most effective combination of nurse-delivered asthma education, a smartphone app, and text messaging.

International Registered Report Identifier (IRRID)

PRR1-10.2196/37946

Pediatric Asthma Is Associated With Poorer 3-Year Academic Achievement in Urban Elementary and Middle-School Students

OBJECTIVE

Asthma has been associated with worse academic performance in a single school year, yet this association may be magnified over time as students with asthma continue to fall behind. This study examined the relationship between asthma and standardized test performance aggregated across 3 school years, including whether performance varied by likelihood of having significant asthma.

METHODS

Data were from students in grades K-8 at 2 urban public schools in the Northeastern United States (2015-2018). Asthma was based on parent- and self-report and school health center records. Standardized test performance was assessed using Measures of Academic Progress (MAP) and Partnership for Assessment of Readiness for College and Careers (PARCC). Mixed effects linear and logistic regression models were used to evaluate the relationship between asthma and performance during 3 school years.

RESULTS

Any asthma was associated with worse MAP performance across the 3 academic years. Students with the most significant asthma demonstrated worse performance on MAP and PARCC. Aggregating across 3 school years, students scored 3.17 points worse on MAP reading (95% confidence interval [CI]: 0.7-5.63; P = .012) and 3.56 points worse on MAP mathematics (95% CI: 0.52-6.6; P = .022); they had 48.8% (95% CI: 1.9%-73.2%; P = .044) and 58.0% (95% CI: 21%-78%; P = .007) lower odds of proficiency on PARCC English/Language Arts and Mathematics, respectively compared to those without asthma.

CONCLUSIONS

The relationship between asthma and poorer academic achievement in 1 school year may be magnified over multiple years, particularly among those with more significant asthma. School-based asthma interventions may support academic growth and more equitable health outcomes.

Trends in School Attendance for Low-Income Children with Chronic Health Conditions: Results from a Randomized Controlled Trial

BACKGROUND

In this study, we aimed to determine how school attendance changed over time for children on Medicaid with chronic health conditions enrolled in a comprehensive care coordination program called Coordinated HEalthcare for Complex Kids (CHECK).

METHODS

Medicaid beneficiaries from one managed care organization were randomized into 2 arms: CHECK program services or usual care. The final sample was 1322.

RESULTS

The mean age was 10.9 (SD = 3.7) years old and children were mostly non-Hispanic Black (62.6%) or Hispanic (34.9%). The median school attendance at baseline was 94.9% (IQR 88.9, 97.9); over one-fourth of children (28.4%) were chronically absent. School attendance was not associated with race/ethnicity, risk level, and health condition. In a model including a significant time/grade interaction, school attendance increased over time for children in pre-kindergarten (OR = 1.52, 95% CI: 1.38, 1.68; p < .001) and kindergarten to 5th grade (OR = 1.21, 95% CI: 1.17, 1.26; p < .001), and decreased for children in 6th to 8th grade (OR = 0.80, 95% CI: 0.77, 0.83; p < .001). No differences were seen in school attendance or chronic absenteeism associated with enrollment in the CHECK program.

CONCLUSIONS

School attendance improved for most of the low-income children with chronic health conditions in our cohort, except for children in middle school.

Implementation Lessons From a Randomized Trial Integrating Community Asthma Education for Children

This study characterized and compared the implementation of clinically integrated community health workers (CHWs) to a certified asthma educator (AE-C) for low-income children with asthma. In the AE-C arm (N = 115), 51.3% completed at least one in-clinic education session. In the CHW arm (N = 108), 722 home visits were completed. The median number of visits was 7 (range, 0-17). Scheduled in-clinic asthma education may not be the optimal intervention for this patient population. CHW visit completion rates suggest that the schedule, location, and content of CHW asthma services better met patients' needs. Seven to 10 visits seemed to be the preferred CHW dose.

A geographic identifier assignment algorithm with Bayesian variable selection to identify neighborhood factors associated with emergency department visit disparities for asthma

BACKGROUND

Ecologic health studies often rely on outcomes from health service utilization data that are limited by relatively coarse spatial resolutions and missing geographic information, particularly neighborhood level identifiers. When fine-scale geographic data are missing, the ramifications and strategies for addressing them are not well researched or developed. This study illustrates a novel spatio-temporal framework that combines a geographic identifier assignment (i.e., geographic imputation) algorithm with predictive Bayesian variable selection to identify neighborhood factors associated with disparities in emergency department (ED) visits for asthma.

METHODS

ED visit records with missing fine-scale spatial identifiers (~ 20%) were geocoded using information from known, coarser, misaligned spatial units using an innovative geographic identifier assignment algorithm. We then employed systematic variable selection in a spatio-temporal Bayesian hierarchical model (BHM) predictive framework within the NIMBLE package in R. Our novel methodology is illustrated in an ecologic case study aimed at identifying neighborhood-level predictors of asthma ED visits in South Carolina, United States, from 1999 to 2015. The health outcome was annual ED visit counts in small areas (i.e., census tracts) with primary diagnoses of asthma (ICD9 codes 493.XX) among children ages 5 to 19 years.

RESULTS

We maintained 96% of ED visit records for this analysis. When the algorithm used areal proportions as probabilities for assignment, which addressed differential missingness of census tract identifiers in rural areas, variable selection consistently identified significant neighborhood-level predictors of asthma ED visit risk including pharmacy proximity, average household size, and carbon monoxide interactions. Contrasted with common solutions of removing geographically incomplete records or scaling up analyses, our methodology identified critical differences in parameters estimated, predictors selected, and inferences. We posit that the differences were attributable to improved data resolution, resulting in greater power and less bias. Importantly, without this methodology, we would have inaccurately identified predictors of risk for asthma ED visits, particularly in rural areas.

CONCLUSIONS

Our approach innovatively addressed several issues in ecologic health studies, including missing small-area geographic information, multiple correlated neighborhood covariates, and multiscale unmeasured confounding factors. Our methodology could be widely applied to other small-area studies, useful to a range of researchers throughout the world.

Severe Asthma in Childhood

Severe asthma is broadly defined as asthma requiring a high level of therapy, usually high doses of inhaled corticosteroids, to bring under control. Children who remain symptomatic despite such treatment are a heterogeneous population, and bear a high burden of disease and require high resource utilization. Children with severe asthma require a comprehensive evaluation, careful consideration of alternative diagnoses and comorbid conditions, assessment of medication adherence and environmental conditions, and frequent disease monitoring.

Measuring Subcounty Differences in Population Health Using Hospital and Census-Derived Data Sets: The Missouri ZIP Health Rankings Project

CONTEXT

Measures of population health at the subcounty level are needed to identify areas for focused interventions and to support local health improvement activities.

OBJECTIVE

To extend the County Health Rankings population health measurement model to the ZIP code level using widely available hospital and census-derived data sources.

DESIGN

Retrospective administrative data study.

SETTING

Missouri.

POPULATION

Missouri FY 2012-2014 hospital inpatient, outpatient, and emergency department discharge encounters (N = 36 176 377) and 2015 Nielsen data.

MAIN OUTCOME MEASURES

ZIP code-level health factors and health outcomes indices.

RESULTS

Statistically significant measures of association were observed between the ZIP code-level population health indices and published County Health Rankings indices. Variation within counties was observed in both urban and rural areas. Substantial variation of the derived measures was observed at the ZIP code level with 20 (17.4%) Missouri counties having ZIP codes in both the top and bottom quintiles of health factors and health outcomes. Thirty of the 46 (65.2%) counties in the top 2 county quintiles had ZIP codes in the bottom 2 quintiles.

CONCLUSIONS

This proof-of-concept analysis suggests that readily available hospital and census-derived data can be used to create measures of population health at the subcounty level. These widely available data sources could be used to identify areas of potential need within counties, engage community stakeholders, and target interventions.

Space-time scan for identification of risk areas for hospitalization of children due to asthma in Mato Grosso, Brazil

INTRODUCTION

Asthma is the result of a complex interaction between genetic, environmental and socioeconomic factors. It represents a serious global public health problem. The goal of this study was to identify geographic areas for priority actions in order to control of asthma in children.

METHOD

Ecological study that space-time statistic Scan was used. Non-elective, short-stay (type 1) paid authorizations of hospitalizations were selected according to hospitalizations year and children place of residence.

RESULTS

In the two periods of the study, the high risk primary cluster was located in the region of Barra do Bugres (relative risk = 8.17, in the first period, and 10.37, in the second). The number of high-risk clusters increased from 8, in the period 2001-2004, to 9, in 2005-2012; while low-risk clusters decreased from 6, in the initial period, to 4, in the latest. The priority geographic areas for attention and intervention for children with asthma are the region around Barra do Bugres, which remained in the two periods with high risk primary clusters and the southwest border of the State that presented increase of the risk. Furthermore, there was an increase of 87% in the number of high risk counties and a reduction of 28% of the counties of protection.

CONCLUSION

In conclusion, the surroundings areas of Barra do Bugres and Porto Estrela and the east and northeast border of the state are priority for health care, once there was an increased risk of hospitalization of children due to asthma.

Neighborhood air pollution and household environmental health as it relates to respiratory health and healthcare utilization among elderly persons with asthma

Objective: The study investigated the associations between fine particulate matter (PM_2.5; <2.5 μm in diameter), indoor environment, pulmonary function, and healthcare utilization in a vulnerable group of elderly persons with asthma. We hypothesized that environmental conditions were associated with adverse pulmonary health outcomes. Methods: The study involved elderly (n = 76; mean age 64.6 years; 48 women) vulnerable persons in Detroit, Michigan, USA, with physician-diagnosed asthma. Exposure variables included measured outdoor PM_2.5, self-rated outdoor and household environmental pollutants. Outcome variables were self-rated and measured pulmonary function, and asthma-related healthcare utilization. Results: Mean ambient PM_2.5 concentrations during the study was 14.14 ± (S.D. 6.36) µg/m³ during the summer and 14.20 (6.33) during the winter (p = 0.95). In multiple regression analyses, adjusting for age and gender, mean 6-month concentration of PM_2.5 was related to shortness of breath (SHOB; standardized β = 0.26, p = 0.02) and inversely with self-rated respiratory health (SRRH; β = 0.28, p = 0.02). However, PM_2.5 did not predict lung function (FEV₁% predicted and FEV₁/FVC). However, PM_2.5 was related to use of asthma controller drugs (β = 0.38, p = 0.001). Participants' air pollution ratings predicted total healthcare utilization (β = 0.33, p = 0.01). Conclusions: In elderly persons with asthma, living near heavy industry and busy highways, objective and perceived environmental pollution relate to participants' respiratory health and healthcare utilization. Importantly, air pollution might increase use of asthma controller drugs containing corticosteroids with implication for elderly persons' risk to develop osteoporosis and cardiovascular disease.

Pervasive Income-Based Disparities In Inpatient Bed-Day Rates Across Conditions And Subspecialties

Building a culture of health in hospitals means more than participating in community partnerships. It also requires an enhanced capacity to recognize and respond to disparities in utilization patterns across populations. We identified all pediatric hospitalizations at Cincinnati Children's Hospital Medical Center, in the period 2011-16. Each hospitalized child's address was geocoded, allowing us to calculate inpatient bed-day rates for each census tract in Hamilton County, Ohio, across all causes and for specific conditions and pediatric subspecialties. We then divided the census tracts into quintiles based on their underlying rates of child poverty and calculated bed-day rates per quintile. Poorer communities disproportionately bore the burden of pediatric hospital days. If children from all of the county's census tracts spent the same amount of time in the hospital each year as those from the most affluent tracts, approximately twenty-two child-years of hospitalization time would be prevented. Of particular note were "hot spots" in high-poverty census tracts neighboring the hospital, where bed-day rates were more than double the county average. Hospitals that address disparities would benefit from a more comprehensive understanding of the culture of health-a culture that is more cohesive inside the hospital and builds bridges into the community.

Air pollution, urgent asthma medical visits and the modifying effect of neighborhood asthma prevalence

BACKGROUND

Social and environmental stressors may modify associations between environmental pollutants and asthma symptoms. We examined if neighborhood asthma prevalence (higher: HAPN vs. lower: LAPN), a surrogate for underlying risk factors for asthma, modified the relationship between pollutants and urgent asthma visits.

METHODS

Through zip code, home addresses were linked to New York City Community Air Survey's land use regression model for street-level, annual average nitrogen dioxide (NO2), particulate matter (PM2.5), elemental carbon (EC), summer average ozone (O3), winter average sulfur dioxide (SO2) concentrations. Poisson regression models were fit to estimate the association (prevalence ratio, PR) between pollutant exposures and seeking urgent asthma care.

RESULTS

All pollutants, except O3 were higher in HAPN than LAPN (P < 0.01). Neighborhood asthma prevalence modified the relationship between pollutants and urgent asthma (P-interaction < 0.01, for NO2 and SO3). Associations between pollutants and urgent asthma were observed only in LAPN (NO2: PR = 1.38, P = 0.01; SO3: PR = 1.85, P = 0.04). No association was observed between pollutants and urgent asthma among children in HAPN (P > 0.05).

CONCLUSIONS

Relationships between modeled street-level pollutants and urgent asthma were stronger in LAPN compared to HAPN. Social stressors that may be more prevalent in HAPN than LAPN, could play a greater role in asthma exacerbations in HAPN vs. pollutant exposure alone.

The Use of Geographic Data to Improve Asthma Care Delivery and Population Health

The authors examine uses of geographic data to improve asthma care delivery and population health and describe potential practice changes and areas for future research.

Life Cycle of Childhood Asthma: Prenatal, Infancy and Preschool, Childhood, and Adolescence

Asthma is a heterogeneous developmental disorder influenced by complex interactions between genetic susceptibility and exposures. Wheezing in infancy and early childhood is highly prevalent, with a substantial minority of children progressing to established asthma by school age, most of whom are atopic. Adolescence is a time of remission of symptoms with persistent lung function deficits. The transition to asthma in adulthood is not well understood.

Chicago Public School nurses examine barriers to school asthma care coordination

OBJECTIVE/DESIGN

Well documented asthma disparities in Chicago pose a continual challenge for the Chicago Public Schools (CPS). Coordinated Healthcare for Complex Kids (CHECK) is a health care demonstration project funded by a Centers for Medicare and Medicaid Services Health Care Innovation Award. A collaborative partnership was formed between CHECK and CPS. With CHECK support, CPS administered a survey to 160 nurses to understand the asthma problems nurses perceived and interest in intervention.

RESULTS

Seventy-five per cent (n = 120) completed the survey. While asthma was the top diagnosis managed by 95%, 72% reported gaps in asthma understanding. Appropriate communication between school nurses and providers occurred 33% of the time; 18% believed they received sufficient support to follow-up on deficient paperwork. The barriers mentioned were lack of medications (73%), time (67%), and communication with providers (61%). When asked their opinions on potential interventions, 78% of nurses supported web-based applications, 66% community health workers (CHW), and 66% stock albuterol in schools.

CONCLUSIONS

The greatest barriers for CPS nurses with asthma management are time and communication. Potential interventions such as web-based communication applications and CHW in schools were well received.

Childhood Asthma Disparities in Chicago: Developing Approaches to Health Inequities

We conducted a needs assessment to develop an evidence-based, locally tailored asthma care implementation plan for high-risk children with asthma in Chicago. Our team of health policy experts, clinicians, researchers, and designers included extensive stakeholder engagement (N = 162) in a mixed-methods community needs assessment. Results showed the lines of communication and collaboration across sectors were weak; caregivers were the only consistent force and could not always manage this burden. A series of recommendations for interventions and how to implement and measure them were generated. Cooperative, multidisciplinary efforts grounded in the community can target wicked problems such as asthma.

A qualitative study of parent perspectives on barriers, facilitators and expectations for school asthma care among urban, African-American children

Objectives: Minority children experience the disproportionate burden of asthma and its consequences. Studies suggest ethnic groups may experience asthma differently with varied perceptions and expectations among parents of African-American and Latino children. Because parents coordinate asthma care with the school, where children spend a significant amount of their day, this study's goal was to determine parents' perspectives on school asthma management. Methods: Focus groups were conducted with parents of children with asthma at four urban schools whose student population is predominantly African-American. A semi-structured guide was utilized focusing on barriers, facilitators and expectations for asthma care at school. Grounded theory principles were applied in this study. Results: Twenty-two parents (91% females) representing 13 elementary and 10 middle school children with asthma (61% boys) participated in four focus groups. Most children (87%) had persistent asthma. The identified barriers to effective school-based asthma care included limited awareness of children with asthma by teachers/staff, communication issues (e.g. school/parent, within school), inadequate education and lack of management plans or systems in place. In contrast, the identified facilitators included steps that fostered education, communication and awareness, as supported by management plans and parent initiative. Parents described their expectations for increased communication and education about asthma, better systems for identifying children with asthma, and a trained asthma point person for school-based asthma care. Conclusions: Parents of children with asthma identified important barriers, facilitators and expectations that must be considered to advance school asthma management. Improved school-based asthma care could lead to better health and academic outcomes.

Physician perceptions of children's coping with asthma are associated with children's psychosocial and disease functioning

INTRODUCTION

Low-income, ethnic minority children disproportionately face poor asthma control, and poorly controlled asthma is related to psychosocial difficulties. This study assessed physician reports of coping in child patients and examined associations between physician reports of child coping and parent and child reports of children's coping, psychosocial, and asthma outcomes (asthma-related stress, emotional and behavioral problems, asthma control, and school missed due to asthma).

METHOD

Physicians reported on coping in their patients (N = 67) ages 5-17 with asthma. Parents reported on child coping, asthma-related stress, emotional and behavioral problems, asthma control, and school missed due to asthma. Children ages 9-17 provided self-reports.

RESULTS

Physicians' reports of primary control coping (e.g., problem solving) and secondary control coping (e.g., cognitive restructuring) were not associated with parent ratings of corresponding coping strategies, but physician reports of disengagement coping (e.g., avoidance) were correlated with parent reports of disengagement and secondary control coping. Physician perceptions of higher child primary control, and lower disengagement, were correlated with less parent-reported stress, better asthma control, and for primary control, fewer partial days of school missed. Physician reports were not correlated with child reports of coping, but physician reports of disengagement were correlated with child-reported conduct problems.

DISCUSSION

Findings suggest that physician reports of child coping provide independent information from parent and child reports of coping, and could be leveraged to identify and intervene with patients who are at elevated risk for poor outcomes. (PsycINFO Database Record

Engaging end-users in intervention research study design

OBJECTIVE

Coordinated Healthcare Interventions for Childhood Asthma Gaps in Outcomes (CHICAGO) Plan is a 3-arm multicenter pragmatic trial to evaluate asthma interventions in high-risk Chicago children presenting to emergency departments (ED) with asthma. A formative evaluation with end-users to provide input into the trial design and outcome instruments was conducted prior to trial initiation.

METHODS

A multi-level data gathering framework from the field of design and standard qualitative methods was employed. This included one focus group with asthma Community Health Workers (N = 8), two focus groups with caregivers of children with asthma (N = 9), in-home interviews with caregivers (N = 9), key informant interviews at six EDs and outpatient clinical sites (N = 19), and ED tours and observations (N = 6). Data were presented, discussed, and organized into themes.

RESULTS

Data indicated that changes to the study design and discharge tool were warranted. A key insight was that ED discharge protocols typically place patient education at a single inopportune time, as families are preparing to leave the ED. At this point in time, families are less receptive to education due to fatigue and a desire to expedite the discharge process. The trial design was modified to reposition the discharge asthma plan to occur at earlier "teachable moments." Delivery of the asthma discharge plan was assigned to study-employed ED coordinators instead of ED providers and staff. Other potential challenges to study recruitment and implementation were raised and addressed.

CONCLUSIONS

Engagement of end-users in the design phase of implementation research is critical to improve research feasibility and relevance.

Spatial variation of pneumonia hospitalization risk in Twin Cities metro area, Minnesota

Fine resolution spatial variability in pneumonia hospitalization may identify correlates with socioeconomic, demographic and environmental factors. We performed a retrospective study within the Fairview Health System network of Minnesota. Patients 2 months of age and older hospitalized with pneumonia between 2011 and 2015 were geocoded to their census block group, and pneumonia hospitalization risk was analyzed in relation to socioeconomic, demographic and environmental factors. Spatial analyses were performed using Esri's ArcGIS software, and multivariate Poisson regression was used. Hospital encounters of 17 840 patients were included in the analysis. Multivariate Poisson regression identified several significant associations, including a 40% increased risk of pneumonia hospitalization among census block groups with large, compared with small, populations of ⩾65 years, a 56% increased risk among census block groups in the bottom (first) quartile of median household income compared to the top (fourth) quartile, a 44% higher risk in the fourth quartile of average nitrogen dioxide emissions compared with the first quartile, and a 47% higher risk in the fourth quartile of average annual solar insolation compared to the first quartile. After adjusting for income, moving from the first to the second quartile of the race/ethnic diversity index resulted in a 21% significantly increased risk of pneumonia hospitalization. In conclusion, the risk of pneumonia hospitalization at the census-block level is associated with age, income, race/ethnic diversity index, air quality, and solar insolation, and varies by region-specific factors. Identifying correlates using fine spatial analysis provides opportunities for targeted prevention and control.

Factors Associated with Asthma ED Visit Rates among Medicaid-enrolled Children: A Structural Equation Modeling Approach

BACKGROUND

Asthma is one of the leading causes of emergency department visits and school absenteeism among school-aged children in the United States, but there is significant local-area variation in emergency department visit rates, as well as significant differences across racial-ethnic groups.

ANALYSIS

We first calculated emergency department (ED) visit rates among Medicaid-enrolled children age 5-12 with asthma using a multi-state dataset. We then performed exploratory factor analysis using over 226 variables to assess whether they clustered around three county-level conceptual factors (socioeconomic status, healthcare capacity, and air quality) thought to be associated with variation in asthma ED visit rates. Measured variables (including ED visit rate as the outcome of interest) were then standardized and tested in a simple conceptual model through confirmatory factor analysis.

RESULTS

County-level (contextual) variables did cluster around factors declared a priori in the conceptual model. Structural equation models connecting the ED visit rates to socioeconomic status, air quality, and healthcare system professional capacity factors (consistent with our conceptual framework) converged on a solution and achieved a reasonable goodness of fit on confirmatory factor analysis.

CONCLUSION

Confirmatory factor analysis offers an approach for quantitatively testing conceptual models of local-area variation and racial disparities in asthma-related emergency department use.

Residential Segregation and Racial Cancer Disparities: A Systematic Review

BACKGROUND

This paper provides the first review of empirical studies of segregation and black-white cancer disparities.

METHODS

We searched all years of PubMed (through May 2016) using these terms: racial segregation, residential segregation, neighborhood racial composition (first terms) and (second terms) cancer incidence, mortality, survival, stage at diagnosis, screening. The 17 (of 668) articles that measured both segregation and a cancer outcome were retained.

RESULTS

Segregation contributed significantly to cancer and to racial cancer disparities in 70% of analyses, even after controlling for socioeconomic status and health insurance. Residing in segregated African-American areas was associated with higher odds of later-stage diagnosis of breast and lung cancers, higher mortality rates and lower survival rates from breast and lung cancers, and higher cumulative cancer risks associated with exposure to ambient air toxics. There were no studies of many types of cancer (e.g., cervical). Studies differed in their measure of segregation, and 40% used an invalid measure. Possible mediators of the segregation effect usually were not tested.

CONCLUSIONS

Empirical analysis of segregation and racial cancer disparities is a recent area of research. The literature is limited to 17 studies that focused primarily on breast cancer. Studies differed in their measure of segregation, yet segregation nonetheless contributed to cancer and to racial cancer disparities in 70% of analyses. This suggests the need for further research that uses valid measures of segregation, examines a variety of types of cancers, and explores the variables that may mediate the segregation effect.

Translating a Proven Pediatric Healthy Homes Asthma Intervention to Adults

Asthma is a serious public health concern, disproportionately affecting urban, minority populations. Chicago's West and Southwest sides are among the most burdened by asthma and environmental conditions that exacerbate asthma. Home-based, community health worker (CHW)-led interventions have repeatedly demonstrated effectiveness in addressing pediatric asthma. However, evidence of such interventions among adults is limited. Helping Chicago's Westside Adults Breathe and Thrive is a longitudinal cohort study that assesses the effectiveness of a CHW-led asthma and healthy homes intervention for adults. One of the first of its kind, the program aims to improve asthma control and quality of life among adults with poorly controlled asthma. This article provides a framework for implementing the intervention from start to finish. CHWs make five or six home visits over the course of 12 months, providing comprehensive and individualized asthma education to study participants. They work closely with participants to conduct home environmental assessments, collaboratively developing techniques to eliminate or avoid asthma triggers. They also assist with smoking cessation, comorbidities, and health system navigation. Between December 1, 2013, and August 31, 2015, 202 participants enrolled in the program. This article reports on successes, challenges, and recommendations from the program's first 21 months of operation.

Housing code violation density associated with emergency department and hospital use by children with asthma

Local agencies that enforce housing policies can partner with the health care system to target pediatric asthma care. These agencies retain data that can be used to pinpoint potential clusters of high asthma morbidity. We sought to assess whether the density of housing code violations in census tracts-the in-tract asthma-relevant violations (such as the presence of mold or cockroaches) divided by the number of housing units-was associated with population-level asthma morbidity and could be used to predict a hospitalized patient's risk of subsequent morbidity. We found that increased density in housing code violations was associated with population-level morbidity independent of poverty, and that the density explained 22 percent of the variation in rates of asthma-related emergency department visits and hospitalizations. Children who had been hospitalized for asthma had 1.84 greater odds of a revisit to the emergency department or a rehospitalization within twelve months if they lived in the highest quartile of housing code violation tracts, compared to those living in the lowest quartile. Integrating housing and health data could highlight at-risk areas and patients for targeted interventions.

Technology-Based Interventions for Asthma-Can They Help Decrease Health Disparities?

Asthma is a condition that has consistently demonstrated significant health outcome inequalities for minority populations. One approach used for care of patients with asthma is the incorporation of technology for behavioral modification, symptom monitoring, education, and/or treatment decision making. Whether such technological interventions can improve the care of black and inner-city patients is unknown. We reviewed all randomized controlled trial technological interventions from 2000 to 2015 performed in minority populations. A total of 16 articles met inclusion and exclusion criteria; all but 1 was performed in a childhood or adolescent age group. The interventions used MPEG audio layer-3 players, text messaging, computer/Web-based systems, video games, and interactive voice response. Many used tailored content and/or a specific behavior theory. Although the interventions were based on technology, most required additional special staffing. Subject user satisfaction was positive, and improvements were noted in asthma knowledge, medication adherence, asthma symptoms, and quality of life. Unfortunately, health care utilization (emergency department visits and/or hospitalizations) was typically not improved by the interventions. Although no single intervention modality was vastly superior, the computer-based interventions appeared to have the most positive results. In summary, technology-based interventions have a high level of user satisfaction among minority and urban/low-income individuals with asthma, and can improve asthma outcomes. Further large-scale studies are needed to assess whether such interventions can decrease health disparities in asthma.

Areas with High Rates of Police-Reported Violent Crime Have Higher Rates of Childhood Asthma Morbidity

OBJECTIVES

To assess whether population-level violent (and all) crime rates were associated with population-level child asthma utilization rates and predictive of patient-level risk of asthma reutilization after a hospitalization.

STUDY DESIGN

A retrospective cohort study of 4638 pediatric asthma-related emergency department visits and hospitalizations between 2011 and 2013 was completed. For population-level analyses, census tract asthma utilization rates were calculated by dividing the number of utilization events within a tract by the child population. For patient-level analyses, hospitalized patients (n = 981) were followed until time of first asthma-related reutilization. The primary predictor was the census tract rate of violent crime as recorded by the police; the all crime (violent plus nonviolent) rate was also assessed.

RESULTS

Census tract-level violent and all crime rates were significantly correlated with asthma utilization rates (both P < .0001). The violent crime rate explained 35% of the population-level asthma utilization variance and remained associated with increased utilization after adjustment for census tract poverty, unemployment, substandard housing, and traffic exposure (P = .002). The all crime rate explained 28% of the variance and was similarly associated with increased utilization after adjustment (P = .02). Hospitalized children trended toward being more likely to reutilize if they lived in higher violent (P = .1) and all crime areas (P = .01). After adjustment, neither relationship was significant.

CONCLUSIONS

Crime data could help facilitate early identification of potentially toxic stressors relevant to the control of asthma for populations and patients.

Area-Level Socioeconomic Factors Are Associated With Noncompletion of Pediatric Preventive Services

We examined 4872 infants born consecutively, 2011-2012, and seen at 3 primary care centers to determine whether area-based socioeconomic measures were associated with noncompletion of common preventive services within the first 15 months. Addresses were geocoded and linked to census tract poverty, adult educational attainment, and household vehicle ownership rates. The quartile of patients in the highest poverty (adjusted odds ratio [aOR] 1.25; 95% confidence interval [CI] 1.01-1.54) and lowest vehicle ownership tracts (aOR 1.32; 95% CI 1.07-1.63) had significantly increased odds of service noncompletion. There were significant spatial clusters of low completion in Cincinnati's urban core. These findings have implications for preventive service delivery.

Engaging stakeholders to design a comparative effectiveness trial in children with uncontrolled asthma

AIM

To present the methods and outcomes of stakeholder engagement in the development of interventions for children presenting to the emergency department (ED) for uncontrolled asthma.

METHODS

We engaged stakeholders (caregivers, physicians, nurses, administrators) from six EDs in a three-phase process to: define design requirements; prototype and refine; and evaluate.

RESULTS

Interviews among 28 stakeholders yielded themes regarding in-home asthma management practices and ED discharge experiences. Quantitative and qualitative evaluation showed strong preference for the new discharge tool over current tools.

CONCLUSION

Engaging end-users in contextual inquiry resulted in CAPE (CHICAGO Action Plan after ED discharge), a new stakeholder-balanced discharge tool, which is being tested in a multicenter comparative effectiveness trial.

Geographic Variation in Hospitalization for Lower Respiratory Tract Infections Across One County

IMPORTANCE

Bronchiolitis and pneumonia are leading causes of pediatric hospitalizations. Identifying geographic patterns in hospitalization rates across small geographic areas could be particularly relevant to targeted patient-level and population-level health care.

OBJECTIVE

To determine whether lower respiratory tract infection hospitalization rates varied geographically across a single county and whether such variability was associated with socioeconomic conditions.

DESIGN, SETTING, AND PARTICIPANTS

Cross-sectional, population-based study of children hospitalized at one institution for lower respiratory tract infections between January 1, 2010, and December 31, 2013. The setting was Cincinnati Children's Hospital Medical Center, a large, academic, stand-alone pediatric facility located in Hamilton County, Ohio. During the study period, 99.6% of in-county children hospitalized for lower respiratory tract infections were admitted to Cincinnati Children's Hospital Medical Center. Participants were children younger than 2 years who were hospitalized with bronchiolitis and children younger than 18 years who were hospitalized with pneumonia. Patients were identified using discharge diagnosis codes and then geocoded to their home census tract.

EXPOSURES

Primary exposures, linked to each geocoded patient, included census tract-level socioeconomic measures obtained from the 2008 to 2012 American Community Survey (eg, adult educational attainment, unemployment, and poverty). Patient-level variables examined included demographics, presence of a complex chronic condition, length of stay, and cost.

MAIN OUTCOMES AND MEASURES

We calculated bronchiolitis and pneumonia hospitalization rates for Hamilton County and for each of 222 in-county census tracts. Associations between hospitalization rate quintiles and underlying socioeconomic conditions were assessed using the Kruskal-Wallis test. Geographic clustering was assessed using the Getis-Ord Gi* statistic.

RESULTS

There were 1495 bronchiolitis hospitalizations and 1231 pneumonia hospitalizations during the study period. The county rates were 17.5 (range across census tracts, 0-71.4) hospitalizations per 1000 children per year for bronchiolitis and 1.6 (range across census tracts, 0-4.3) hospitalizations per 1000 children per year for pneumonia. There was significant variation in the median hospitalization rates by census tract quintile for bronchiolitis (32.8, 20.8, 14.0, 10.4, and 5.1 per 1000) and for pneumonia (3.3, 2.1, 1.4, 0.9, and 0.3 per 1000). There were also significant, graded differences in socioeconomic measures by hospitalization rate quintile. Hot spots were localized to inner-city, impoverished neighborhoods.

CONCLUSIONS AND RELEVANCE

Bronchiolitis and pneumonia hospitalization rates varied considerably in ways that were related to underlying socioeconomic conditions. Clinical and public health interventions, targeted accordingly, could improve patient-level and population-level management of acute conditions at a reduced cost.

Neighborhood poverty, urban residence, race/ethnicity, and asthma: Rethinking the inner-city asthma epidemic

BACKGROUND

Although it is thought that inner-city areas have a high burden of asthma, the prevalence of asthma in inner cities across the United States is not known.

OBJECTIVE

We sought to estimate the prevalence of current asthma in US children living in inner-city and non-inner-city areas and to examine whether urban residence, poverty, or race/ethnicity are the main drivers of asthma disparities.

METHODS

The National Health Interview Survey 2009-2011 was linked by census tract to data from the US Census and the National Center for Health Statistics. Multivariate logistic regression models adjusted for sex; age; race/ethnicity; residence in an urban, suburban, medium metro, or small metro/rural area; poverty; and birth outside the United States, with current asthma and asthma morbidity as outcome variables. Inner-city areas were defined as urban areas with 20% or more of households at below the poverty line.

RESULTS

We included 23,065 children living in 5,853 census tracts. The prevalence of current asthma was 12.9% in inner-city and 10.6% in non-inner-city areas, but this difference was not significant after adjusting for race/ethnicity, region, age, and sex. In fully adjusted models black race, Puerto Rican ethnicity, and lower household income but not residence in poor or urban areas were independent risk factors for current asthma. Household poverty increased the risk of asthma among non-Hispanics and Puerto Ricans but not among other Hispanics. Associations with asthma morbidity were very similar to those with prevalent asthma.

CONCLUSIONS

Although the prevalence of asthma is high in some inner-city areas, this is largely explained by demographic factors and not by living in an urban neighborhood.

Inner city asthma

The inner city has long been recognized as an area of high asthma morbidity and mortality. A wide range of factors interact to create this environment. These factors include well-recognized asthma risk factors that are not specific to the inner city, the structure and delivery of health care, the location and function of the urban environment, and social inequities. In this article, these facets are reviewed, and successful and unsuccessful interventions are discussed, to understand what is needed to solve this problem.

Advancing research on racial-ethnic health disparities: improving measurement equivalence in studies with diverse samples

To conduct meaningful, epidemiologic research on racial-ethnic health disparities, racial-ethnic samples must be rendered equivalent on other social status and contextual variables via statistical controls of those extraneous factors. The racial-ethnic groups must also be equally familiar with and have similar responses to the methods and measures used to collect health data, must have equal opportunity to participate in the research, and must be equally representative of their respective populations. In the absence of such measurement equivalence, studies of racial-ethnic health disparities are confounded by a plethora of unmeasured, uncontrolled correlates of race-ethnicity. Those correlates render the samples, methods, and measures incomparable across racial-ethnic groups, and diminish the ability to attribute health differences discovered to race-ethnicity vs. to its correlates. This paper reviews the non-equivalent yet normative samples, methodologies and measures used in epidemiologic studies of racial-ethnic health disparities, and provides concrete suggestions for improving sample, method, and scalar measurement equivalence.

Identifying barriers to chronic disease reporting in Chicago Public Schools: a mixed-methods approach

BACKGROUND

Chronic disease among school-aged children is a public health concern, particularly for asthma and food allergy. In Chicago Public Schools (CPS), rates of asthma and food allergy among students are underreported. The aim of this study was to determine the barriers to chronic disease reporting as experienced by CPS parents and school nurses.

METHODS

A mixed-methods approach included focus groups and key informant interviews with parents and school nurses, and a cross-sectional survey was completed by parents. Qualitative data analysis was performed and survey data were analyzed to determine the significant demographic and knowledge variables associated with successfully completing the reporting process.

RESULTS

The three main barriers identified were 1) a lack of parental process knowledge; 2) limited communication from schools; and 3) insufficient availability of school nurses. Parents were significantly more likely to successfully complete the reporting process if they knew about special accommodations for chronic diseases, understood the need for physician verification, and/or knew the school nurse.

CONCLUSIONS

These findings suggest that increasing parental knowledge of the reporting process will allow schools to better identify and manage their students' chronic conditions. A parent-focused intervention informed by these results has been completed.

Associations of neighborhood concentrated poverty, neighborhood racial/ethnic composition, and indoor allergen exposures: a cross-sectional analysis of los angeles households, 2006-2008

Although racial/ethnic, socioeconomic, and neighborhood factors have been linked to asthma, and the association between indoor allergens and asthma is well documented, few studies have examined the relationship between these factors and indoor allergens. We examined the frequency of reported indoor allergens and differences by racial/ethnic, socioeconomic, and neighborhood characteristics among a diverse sample of Los Angeles households. Multilevel logistic regression models were used to analyze the data from 723 households from wave 2 of the Los Angeles Family and Neighborhood Survey. The reported presence of rats, mice, cockroaches, mold, pets, and tobacco smoke were the primary outcomes of interest. Hispanic and Asian households had a nearly threefold increase in the odds of reporting cockroaches compared to non-Hispanic Whites (OR, 2.85; 95 % CI 1.38-5.88 and OR, 2.62; 95 % CI 1.02-6.73, respectively) even after adjusting for socioeconomic factors. Primary caregivers who had obtained a high school degree were significantly less likely to report the presence of mice and cockroaches compared to primary caregivers with less than a high school degree (OR, 0.19; 95 % CI 0.08-0.46 and OR, 0.39; 95 % CI 0.23-0.68, respectively). Primary caregivers with more than a high school degree were also less likely to report the presence of rats, mice, and cockroaches within their households, compared to those with less than a high school degree. Compared to renters, home owners were less likely to report the presence of mice, cockroaches, and mold within their households. At the neighborhood level, households located within neighborhoods of high concentrated poverty (where the average poverty rate is at least 50 %) were more likely to report the presence of mice and cockroaches compared to households in low concentrated poverty neighborhoods (average poverty rate is 10 % or less), after adjusting for individual race/ethnicity and socioeconomic characteristics. Our study found evidence in support of neighborhood-level racial/ethnic and socioeconomic influences on indoor allergen exposure, above and beyond individual factors. Future studies should continue to explore individual and neighborhood-level racial/ethnic and socioeconomic differences in household allergen exposures across diverse contexts.

Differing asthma prevalence by gross national index of country of birth among New York City residents

BACKGROUND

The hygiene hypothesis suggests that higher exposure to infectious agents may be one reason for regional differences in asthma. This would suggest that immigrants from less developed countries, where infections are more common, to highly developed countries will have lower risk of asthma compared with natives, as has been found in a number of studies. We expand the research on immigrants to look at the level of development in country of origin as a predictor of asthma in New York City residents.

METHODS

Data came from the 2009 cross-sectional Community Health Survey. We used logistic regression to assess the relationship of country of birth and the gross national income (GNI), an indicator of the level of development, of country of birth with asthma among immigrants and US-born New York City residents.

RESULTS

Those who were foreign born had lower odds of having asthma compared with those US born (OR = 0.43, P < 0.001). There was a dose relationship between GNI and asthma with decreasing odds of having asthma associated with lower GNI in country of birth (low GNI country: OR = 0.26, P = 0.014; middle GNI country: OR = 0.36, P < 0.001; and high GNI country = reference).

CONCLUSIONS

These findings lend support to the hygiene hypothesis in that the odds of having asthma among New York City residents was lowest among people born in the least developed countries, as indicated by GNI, where infections are likely the most common.

The impact of student-directed videos on community asthma knowledge

The Student Asthma Research Team (START) program was designed to enable students to explore socio-ecological factors contributing to asthma through the use of Photovoice, a technique that gathers both photographs and personal experiences from participants. The photographs taken by and commentary from student participants were integrated into public service announcements (PSAs) intended to increase community asthma awareness and catalyze behavior change. This article evaluates the effectiveness of these student-directed PSAs at improving asthma awareness among peers and community members. Pre-PSA, immediate post-PSA, and 4 month post-PSA follow-up assessments were conducted to evaluate changes in community members' asthma knowledge and behavior. The student-directed PSAs were found to significantly increase asthma knowledge among community members, irrespective of age, gender, or race. Increased knowledge persisted through the 4-month post-PSA follow-up. Of the thirty-six participants who were successfully contacted for the follow-up survey, nearly 40 % reported meaningful behavior-change in response to the PSAs. Photovoice and media production techniques were effective in engaging adolescent students--an under-served and often disenfranchised population--in asthma health education through the development and dissemination of PSAs. The extension of participatory techniques such as Photovoice to include the creation of student-directed PSAs holds promise for engaging adolescents in public health initiatives within their communities.

Young, African American adults with asthma: what matters to them?

BACKGROUND

Asthma is a common chronic condition that shows significant health disparities among minority populations. Little research has focused on the management needs and preferences of young African American adults with asthma, a population undergoing dramatic life changes as they transition from adolescence to adulthood.

OBJECTIVE

To understand the experiences and perspectives of young African American adults managing their asthma.

METHODS

Focus groups were conducted with African American adults (n = 34) 18 to 30 years old with a physician diagnosis of asthma. Focus group sessions were audiotaped, transcribed verbatim, and coded using constant comparative analysis.

RESULTS

Six major domains were identified and some of the salient themes included changes in asthma management needs with the onset of adulthood, career limitations owing to asthma, childcare interference with asthma regimen adherence, and difficulties with medication cost owing to lapses in insurance coverage. Participants also reported feeling discouraged when interacting with physicians as it related to their asthma care; yet ageism and racism were not perceived. Despite poor medication regimen compliance, participants were overwhelmingly interested in participating in asthma self-management programs and had strong preferences that such programs be tailored specifically to young adults with special consideration of the cultural experience of young African Americans with asthma.

CONCLUSION

Young African American adults have specific barriers to optimal asthma care and distinctive ideas for self-management programs. It is important for the asthma care provider to identify and address these population- and age-specific barriers to improve asthma outcomes and decrease health care disparities.