Children with poorly controlled asthma: Randomized controlled trial of a home-based environmental control intervention

Impact of family socioeconomic position on childhood asthma outcomes, severity, and specialist referral - a Danish nationwide study

BACKGROUND

Asthma is the most common chronic illness in children, carrying a major burden. Socioeconomic position (SEP) affects adult asthma outcomes, but its impact on childhood asthma, particularly in primary versus specialist care, has not been studied thoroughly.

METHODS

In a Danish cohort consisting of all children aged 2-17 years redeeming inhaled corticosteroids in 2015, parental SEP impact on asthma outcomes was investigated. Workforce attachment, income, education, and metropolitan residence were chosen as covariates in logistic regression. Outcomes were uncontrolled (excessive use of short-acting beta2-agonists), exacerbating (oral corticosteroid use or hospitalization), and severe asthma (according to GINA 2020).

RESULTS

The cohort comprised 29,851 children (median age 8.0, 59% boys). 16% had uncontrolled asthma, 8% had ≥1 exacerbation. Lower income and metropolitan residence correlated with higher odds of poor control, exacerbations, and severe asthma. Lower education correlated with worse asthma outcomes. Education and income were protective factors in primary care, but not in specialist care. Metropolitan residence was the sole factor linked to specialist care referral for severe asthma.

CONCLUSION

Low parental SEP and metropolitan residence associated with poor asthma outcomes. However, specialist care often mitigated these effects, though such care was less likely for at-risk children in non-metropolitan areas.

Secondhand and thirdhand smoke: a review on chemical contents, exposure routes, and protective strategies

Secondhand smoke (SHS: a mixture of sidestream and mainstream smoke) and thirdhand smoke (THS: made up of the pollutants that settle indoors after smoking in closed environments) are a significant public health concern. SHS and THS contain various chemicals which can be released into the air or settle on surfaces. At present, the hazards of SHS and THS are not as well documented. In this review, we describe the chemical contents of THS and SHS, exposure routes, vulnerable groups, health effects, and protective strategies. The literature search was conducted for published papers on September 2022 in Scopus, Web of Science, PubMed, and Google Scholar databases. This review could provide a comprehensive understanding of the chemical contents of THS and SHS, exposure routes, vulnerable groups, health effects, protective strategies, and future researches on environmental tobacco smoke.

Environment and the development of severe asthma in inner city population

PURPOSE OF REVIEW

Higher asthma prevalence and morbidity are seen in inner-city areas, disproportionately affecting low-income families living in substandard housing. Children within these families experience more frequent asthma exacerbations, acute care and emergency department visits, and hospitalizations, thus characterizing severe asthma. In this review, we assess recent published literature focused on indoor and outdoor exposures that contribute to the development and morbidity of asthma.

RECENT FINDINGS

Many urban environmental exposures contribute to asthma burden, including tobacco/e-cigarette smoke, pest allergens, molds, and possibly synthetic chemicals such as phthalates and bisphenol A, radon, and volatile organic compounds. Individuals living in inner-city areas also experience higher levels of air pollutants and ambient heat, further perpetuating asthma incidence and severity.

SUMMARY

This article summarizes the latest advances and provides direction for future research on risk factors, interventions, and public policy to help alleviate the burden of asthma due to urban environment exposures.

Caregiver Depressive Symptoms and Primary Medication Nonadherence in Children With Asthma

INTRODUCTION

The purpose of this study was to identify risk factors for primary medication nonadherence among low-income minority children with persistent asthma.

METHOD

Data were from an environmental control and educational intervention for children with uncontrolled asthma who were treated in the emergency department for an asthma exacerbation. Presence or absence of pharmacy records for child asthma medications was the outcome of interest. A range of sociodemographic, health, and psychosocial measures were included in the binary logistic regression.

RESULTS

Of the 222 youths (mean age = 6.3 years; 93.7% Black), 25 (11.3%) lacked pharmacy records of asthma medications. For every 1-point increase in caregiver depressive symptoms, the odds of the child having a pharmacy record declined by 5% (odds ratio = 0.95; p = .012).

DISCUSSION

Providers should systematically assess and monitor caregiver depressive symptoms as a potential contributing factor for primary medication nonadherence in low-income minority children with persistent, uncontrolled asthma.

Psychometric evaluation of the medication adherence report scale in caregivers of low-income, urban, African American children with poorly controlled asthma

OBJECTIVE

Accurately assessing asthma medication usage among low-income, urban, African American children is essential to reduce asthma health disparities. The purpose of this study was to examine the factor structure of the five-item Medication Adherence Report Scale (MARS), in a sample of caregivers of low-income, urban, African American youth with poorly controlled asthma.

METHOD

Using baseline data from a randomized clinical trial evaluating the efficacy of an environmental control educational intervention, confirmatory factor analysis (CFA) was conducted to ascertain the MARS factor structure. Construct validity was assessed using a regression model inclusive of caregiver-reported medication adherence, Asthma Medication Ratio (AMR), asthma control, and caregiver perception of asthma control as predictors of the MARS.

RESULTS

Caregivers were female (97%) and 27.4% had an annual income under $10,000. The mean MARS score was 21.88 ± 3.33 out of a possible range of 5-25, representing high adherence. Confirmatory factor analysis indicated that a five-item one-factor model marginally fit the data based on the fit indices: χ² (5) = 31.71, p < 0.001; RMSEA ≤ 0.161; CFI = 0.986; TLI = 0.971; and WRMR = 0.979. The MARS was associated with another caregiver-reported measure of medication adherence but not associated with AMR, asthma control, or caregiver perception of asthma control.

CONCLUSIONS

The MARS demonstrated marginal fit in CFA and may not be clinically indicated in light of the lack of associations with objective measures of asthma medication adherence and asthma control.

Social Risk Interventions and Health Care Utilization for Pediatric Asthma: A Systematic Review and Meta-analysis

IMPORTANCE

Social determinants of health (SDOH) correlate with pediatric asthma morbidity, yet whether interventions addressing social risks are associated with asthma outcomes among children is unclear.

OBJECTIVE

To catalog asthma interventions by the social risks they address and synthesize their associations with asthma-related emergency department (ED) visits and hospitalizations among children.

DATA SOURCES

PubMed, Scopus, PsycINFO, SocINDEX, CINAHL, and references of included full-text articles were searched from January 1, 2008, to June 16, 2021.

STUDY SELECTION

Included articles were US-based studies evaluating the associations of interventions addressing 1 or more social risks with asthma-related ED visits and hospitalizations among children. The systematic review included 38 of the original 641 identified articles (6%), and the meta-analysis included 19 articles (3%).

DATA EXTRACTION AND SYNTHESIS

Data extraction followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses reporting guideline. The SDOH intervention clusters were identified by grouping studies according to the social risks they addressed, using the Healthy People 2020 SDOH framework. Random-effects models created pooled risk ratios (RRs) as the effect estimates.

MAIN OUTCOMES AND MEASURES

Patients with ED visits or hospitalizations were the primary outcomes. Subgroup analyses were conducted by an SDOH intervention cluster. Sensitivity analyses were conducted for each, removing outlier studies and studies failing to meet the minimum quality threshold.

RESULTS

In total, 38 studies were included in the systematic review, with 19 of these studies providing data for the meta-analysis (5441 participants). All interventions addressed 1 or more of the health, environment, and community domains; no interventions focused on the economy or education domains. In the primary analysis, social risk interventions were associated with decreased ED visits (RR, 0.68; 95% CI, 0.57-0.81; I2 = 70%) and hospitalizations (RR, 0.50; 95% CI, 0.37-0.68; I2 = 69%). In subgroup analyses, the health, environment, and community intervention cluster produced the lowest RR for ED visits (RR, 0.53; 95% CI, 0.44-0.64; I2 = 50%) and for hospitalizations (RR, 0.33; 95% CI, 0.20-0.55; I2 = 71%) compared with other intervention clusters. Sensitivity analyses did not alter primary or subgroup effect estimates.

CONCLUSIONS AND RELEVANCE

The results of this systematic review and meta-analysis indicate that social risk interventions are associated with decreased asthma-related ED visits and hospitalizations among children. These findings suggest that addressing social risks may be a crucial component of pediatric asthma care to improve health outcomes.

Predictors of Depressive Symptoms in Caregivers of Children With Poorly Controlled Asthma: Is the Neighborhood Context Important?

Children residing in low-income neighborhoods are disproportionately affected by asthma morbidity and mortality. Neighborhood violence has been explored in relationship to child morbidity and health and developmental outcomes, but less is known about the relationship of violence to caregiver mental health. The purpose of this study was to examine the relationship of neighborhood violent crime victimization (objective and subjective measures), perceptions of community well-being and support, and depressive symptoms among a sample of primarily single female caregivers of children with uncontrolled asthma. This is a secondary analysis of baseline data obtained from a randomized controlled trial of a home-based environmental control intervention for children aged 3 to 12 years, who were primarily African American, and diagnosed with persistent, uncontrolled asthma. Results showed that both objective and subjective measures of crime, particularly in those with relatively low life stress (P < .001), limited education of the caregiver (P < .001), and fewer children (P < .01) in the household had direct associations with depressive symptoms in caregivers of children with uncontrolled asthma. Neighborhood perceptions of satisfaction and a sense of community, as well as perceptions of social support, were not associated with depressive symptoms. Our findings emphasize the need to screen for depressive symptoms, life stress, as well as both objective and subjective perceptions of neighborhood violence among caregivers of children with poorly controlled asthma. Furthermore, when providing holistic care to these caregivers, stress reduction and the provision of mental health resources are paramount.

Evaluation of a Program to Reduce Home Environment Risks for Children with Asthma Residing in Urban Areas

Pediatric asthma morbidity is often linked to challenges including poor housing quality, inability to access proper medical care, lack of medications, and poor adherence to medical regimens. Such factors also propagate known disparities, by race and income, in asthma-related outcomes. Multimodal home visits have an established evidence base in support of their use to improve such outcomes. The Collaboration to Lessen Environmental Asthma Risks (CLEAR) is a partnership between the Cincinnati Children's Hospital Medical Center and the local health department which carries out home visits to provide healthy homes education and write orders for remediation should code violations and environmental asthma triggers be identified. To assess the strengths and weaknesses of the program, we obtained qualitative feedback from health professionals and mothers of children recently hospitalized with asthma using key informant interviews. Health professionals viewed the program as a positive support system for families and highlighted the potential benefit of education on home asthma triggers and connecting families with services for home improvements. Mothers report working to correct asthma triggers in the home based on the education they received during the course of their child's recent illness. Some mothers indicated mistrust of the health department staff completing home visits, indicating a further need for research to identify the sources of this mistrust. Overall, the interviews provided insights into successful areas of the program and areas for program improvement.

The Effects of Caregiver Social Support and Depressive Symptoms on Child Medication Adherence and Asthma Control

The purpose of this study was to examine relationships among caregiver social support, caregiver depressive symptoms, medication adherence, and asthma control in a sample of low-income, urban, Black children aged 3–12 years with uncontrolled asthma and their caregivers. Using longitudinal data from a randomized controlled trial (RCT) assessing the efficacy of an environmental control educational intervention, we used generalized estimating equations and ordered logistic regression models to evaluate the relationship between caregiver social support (Medical Outcomes Study Social Support Survey), depressive symptoms (Center for Epidemiologic Studies Depression scale), and two child asthma outcomes: (a) medication adherence (Asthma Medication Ratio) and (b) asthma control. At baseline, 45.7% of the 208 children had very poorly controlled asthma. Nearly a third of caregivers (97% female) had clinically significant depressive symptoms at each data collection point. Social support was not associated with either asthma outcome nor did it moderate the relationship between depressive symptoms and child asthma outcomes. Higher caregiver depressive symptoms predicted decreased medication adherence (b=−0.003, SE 0.002). Moderate asthma at baseline (OR: 0.305, SE: 0.251), severe asthma at baseline (OR: 0.142, SE: 0.299), household income < $20,000 per year (OR: 0.505, SE: 0.333), and fall season (OR: 0.643, SE: 0.215) were associated with poorer asthma control. Attending to the social context of low-income, urban, Black children with asthma is critical to reduce asthma morbidity. Maternal depressive symptoms are modifiable and should be targeted in interventions to improve child asthma outcomes in this vulnerable population. The RCT was registered with ClinicalTrials.gov (NCT01981564) in October 2013.

Design of a home-based intervention for Houston-area African-American adults with asthma: Methods and lessons learned from a pragmatic randomized trial

A growing body of evidence demonstrates that home-based, multicomponent interventions can effectively reduce exposures to asthma triggers and decrease asthma symptoms. However, few of these studies have targeted adults. To address this and other research gaps, we designed and implemented a pragmatic randomized clinical trial, the Houston Home-based Integrated Intervention Targeting Better Asthma Control (HIITBAC) for African Americans, to assess the effectiveness of a home-based intervention to improve asthma control and quality of life in African-American adults-a population disproportionately affected by asthma. The primary goals were to help participants reduce allergens and irritants in their homes and better manage their disease through knowledge, improved medication use, and behavior change. HIITBAC had two groups: clinic-only and home-visit groups. Both groups received enhanced clinical care, but the home-visit group also received a detailed home assessment and four additional home visits spaced over roughly one year. We recruited 263 participants. Of these, 152 (57.8%) were recruited through electronic health record data, 51 (19.4%) through Emergency Medical Services data, and 60 (22.8%) through other efforts (e.g., emergency departments, community events, outreach). Seventy participants (26.6%) were lost to follow up, substantially more in the home-visit than in the clinic-only group. We describe the HIITBAC methodology and cohort, discuss lessons learned about recruitment and retention, and highlight adaptations we implemented to address these lessons.

Update in Pediatric Asthma: Selected Issues

Asthma is a complex condition that affects 14% of the world's children and the approach to management includes both pharmacologic as well as non-pharmacologic strategies including attention to complex socioeconomic status phenomena. After an historical consideration of asthma, allergic and immunologic aspects of asthma in children and adolescents are presented. Concepts of socioeconomic aspects of asthma are considered along with environmental features and complications of asthma disparities. Also reviewed are links of asthma with mental health disorders, sleep disturbances and other comorbidities. A stepwise approach to asthma management is discussed that includes pharmacologic and non-pharmacologic strategies in the pediatric population. The role of immunotherapy and use of various immunomodulators are considered as well.