Comparisons between 2015 US asthma prevalence and two measures of asthma burden by racial/ethnic group

Home-based educational interventions for children with asthma

BACKGROUND

Asthma is a chronic airway condition with a global prevalence of 262.4 million people. Asthma education is an essential component of management and includes provision of information on the disease process and self-management skills development such as trigger avoidance. Education may be provided in various settings. The home setting allows educators to reach populations (e.g. financially poor) that may experience barriers to care (e.g. transport limitations) within a familiar environment, and allows for avoidance of attendance at healthcare settings. However, it is unknown if education delivered in the home is superior to usual care or the same education delivered elsewhere. There are large variations in asthma education programmes (e.g. patient-specific content versus broad asthma education, number/frequency/duration of education sessions). This is an update of the 2011 review with 14 new studies added.

OBJECTIVES

To assess the effects of educational interventions for asthma, delivered in the home to children, their caregivers, or both, on asthma-related outcomes.

SEARCH METHODS

We searched Cochrane Airways Group Trials Register, CENTRAL, MEDLINE, two additional databases and two clinical trials registries. We searched reference lists of included trials/review articles (last search October 2022), and contacted authors of included studies.

SELECTION CRITERIA

We included randomised controlled trials of education delivered in the home to children and adolescents (aged two to 18 years) with asthma, their caregivers or both. We included self-management programmes, delivered face-to-face and aimed at changing behaviour (e.g. medication/inhaler technique education). Eligible control groups were usual care, waiting list or less-intensive education (e.g. shorter, fewer sessions) delivered outside or within the home. We excluded studies with mixed-disease populations and without a face-to-face component (e.g. telephone only).

DATA COLLECTION AND ANALYSIS

Two review authors independently selected trials, assessed trial quality, extracted data and used GRADE to rate the certainty of the evidence. We contacted study authors for additional information. We pooled continuous data with mean difference (MD) and 95% confidence intervals (CI). We used a random-effects model and performed sensitivity analyses with a fixed-effect model. When combining dichotomous and continuous data, we used generic inverse variance, using a Peto odds ratio (OR) and fixed-effect model. Primary outcomes were exacerbations leading to emergency department visits and exacerbations requiring a course of oral corticosteroids. Six months was the primary time point for outcomes. The summary of findings tables reported on the primary outcomes, and quality of life, daytime symptoms, days missed from school and exacerbations leading to hospitalisations.

MAIN RESULTS

This review includes 26 studies with 5122 participants (14 studies and 2761 participants new to this update). Sixteen studies (3668 participants) were included in meta-analyses. There was substantial clinical diversity. Participants differed in age (range 1 to 18 years old) and asthma severity (mild to severe). The context and content of educational interventions also varied, as did the aims of the studies (e.g. reducing healthcare utilisation, improving quality of life) and there was diversity in control group event rates. Outcomes were measured over various time points specified in the original studies. All studies were at risk of bias due to the nature of the intervention. It is possible that the participants/educators may not have been aware of their allocation, so all studies were judged at unclear risk for performance bias. Home-based education versus usual care, waiting list or less-intensive education programme delivered outside the home Primary outcomes Home-based education may result in little to no difference in exacerbations leading to emergency department visits at six-month follow-up compared to control, but the evidence is very uncertain (Peto OR 1.22, 95% CI 0.50 to 2.94; 5 studies (2 studies with 2 intervention arms), 855 participants; very low-certainty evidence). Home-based education results in little to no difference in exacerbations requiring a course of oral corticosteroids compared to control (mean difference (MD) -0.18, 95% CI -0.63 to 0.26; 1 study (2 intervention arms), 250 participants; low-certainty evidence). Secondary outcomes Home-based education may improve quality-of-life scores compared to control, but the evidence is very uncertain (standardised mean difference (SMD) 0.32, 95% CI 0.08 to 0.56; 4 studies, 987 participants; very low-certainty evidence). The evidence is very uncertain about the effects of home-based education on mean symptom-free days, days missed from school/work and exacerbations leading to hospitalisation compared to control (all very low-certainty evidence). Home-based education versus less-intensive home-based education for children with asthma Primary outcomes A more-intensive home-based education intervention did not reduce exacerbations leading to emergency department visits (Peto OR 1.36, 95% CI 0.35 to 5.30; 4 studies, 729 participants; low-certainty evidence) or exacerbations requiring a course of oral corticosteroids (MD 0.08, 95% CI -0.14 to 0.30; 3 studies, 605 participants; low-certainty evidence), compared to a less-intensive type of home-based education. Secondary outcomes A more-intensive home-based asthma education intervention may reduce hospitalisation due to an asthma exacerbation (Peto OR 0.14, 95% CI 0.04 to 0.55; 4 studies, 689 participants; low-certainty evidence), but not days missed from school (low-certainty evidence), compared with a less-intensive home-based asthma education intervention. A more intensive home-based education intervention had no effect on quality of life and symptom-free days (both very low certainty), compared with a less-intensive home-based asthma education intervention, but the evidence is very uncertain.

AUTHORS' CONCLUSIONS

We found uncertain evidence for home-based asthma educational interventions compared to usual care, education delivered outside the home or a less-intensive educational intervention. Home-based education may improve quality of life compared to control and reduce the odds of hospitalisation compared to less-intensive educational intervention. Although asthma education is recommended in guidelines, the considerable diversity in the studies makes the evidence difficult to interpret about whether home-based education is superior to none, or education delivered in another setting. This review contributes limited information on the fundamental optimum content and setting for educational interventions in children. Further studies should use standard outcomes from this review and design trials to determine what components of an education programme are most important.

Role of ambient air pollution in asthma spread among various population groups of Lahore City: a case study

Air pollution levels rise as a result of industrial and vehicular emissions, epidemiological issues such as asthma become more prevalent in Lahore, Punjab, Pakistan and cause adverse public health effects. Many studies explored the association between air pollutants and frequency of asthma hospital visits, although their effects are unclear. This study examined the link between air pollution, asthma, and socioeconomic and demographic factors. A questionnaire survey was administered among four age groups (15-25, 25-45, 45-60, and over 60 years old) in public and private hospitals of Lahore city. Daily average concentrations of five air pollutants including carbon monoxide (CO), nitrogen dioxide (NO₂), sulfur dioxide (SO₂), ozone (O₃), and particulate matter (PM_2.5 and PM₁₀) were recorded at ten fixed air monitoring sites in Lahore city. There were favorable connections between outpatient department (OPD) asthma visits (64%) and levels of outdoor air quality during winter season throughout the study period. The correlation between 1, 29, and 370 asthma patients and average daily air pollution levels found that the condition was more prevalent in females (53%) than males (47%). There was a significant correlation between PM₁₀ exposure and asthma OPD visits in the city (p 0.001), as well as the elevated PM₁₀ levels were substantially linked with OPD asthma visits over the winter season in the city. The hazard index (HI) for all adult population was estimated 0.001132. The study's findings indicate that exposure to ambient air pollution is a significant predictor of asthma hospital visits, particularly among the elderly. Strategies can be developed by policymakers in response to the worrying situation of allergic disease asthma in industrial cities due to air pollution.

The Impact of Asthma Education Programs on Children's Life Aspects: A Systematic Review

Objective:

This Scoping review was conducted to explore the impact of education programs on asthmatic children's knowledge of asthma, quality of life, school absenteeism, and selfmanagement.

Data sources:

The Scoping review was restricted to randomized controlled trials and quasi-experimental designs. Studies published in the English language between 2000 and 2017 were retrieved from CINAHL, MEDLINE, OvidSP, Cochrane Library, ProQuest, and Google Scholar databases.

Studies Selection:

Along with specific inclusion and exclusion criteria for selecting studies, an evaluation for the quality of the experimental research based on the level of evidence was applied to categorize studies into poor to good quality.

Results:

Of the 1256 items initially identified references, 18 studies were included in the review to cover the impact of asthma education on four major areas: children's knowledge of asthma, quality of life, school absenteeism, and self-management.

Conclusion:

Despite some inconsistencies between the reviewed studies, asthma education programs demonstrated a positive effect on children's knowledge of asthma, quality of life, school absenteeism, and self-management. Further research on the effect of asthma education on children's activity level, symptoms, and emotional domains is warranted.