Although older children know more about asthma and assume more responsibility for disease management, their adherence is lower than that of younger children. No association was found between adherence and child knowledge, reasoning about asthma, or responsibility for asthma management.
WHAT'S KNOWN ON THIS SUBJECT: Asthma disparities exist, with Latino children of Caribbean descent at risk for poor disease control. Controller medications reduce symptoms; however, medication adherence remains suboptimal. Identifying what factors predict poor medication adherence in at-risk groups could identify important treatment targets. WHAT THIS STUDY ADDS:This study is the first to assess objective rates of medication use among children with asthma in Puerto Rico. Findings suggest that interventions incorporating family resources and addressing parental beliefs about medications may be of benefit across cultural groups. abstract OBJECTIVE: Latino children of Caribbean descent remain at high risk for poorly controlled asthma. Controller medications improve asthma control; however, medication adherence remains suboptimal, particularly among minorities. This study assessed socioeconomic, familybased, and parent factors in medication adherence among children with asthma from Rhode Island (RI; Latino and non-Latino white [NLW]) and Puerto Rico. METHODS:Data collection occurred as part of a multicenter study of asthma disparities. Our sample included children (ages 7-16) prescribed objectively monitored controller medications (n = 277; 80 island Puerto Rico, 114 RI Latino, 83 RI NLW). Parents completed questionnaires regarding family background and beliefs about medications. Families participated in an interview regarding asthma management. Multilevel analyses (maximum likelihood estimates) accounting for children being nested within site and ethnic group assessed the contribution of social context, family, and parent variables to medication adherence. RESULTS:Medication adherence differed by ethnic group (F 2, 271 = 7.46, P , .01), with NLW families demonstrating the highest levels of adherence. Multilevel models indicated that parental beliefs about medication necessity and family organization regarding medication use were significant predictors of adherence, even for families below the poverty threshold. With family factors in the model, a substantial improvement in model fit occurred (Akaike Information Criterion change of 103.45).CONCLUSIONS: Adherence to controller medications was lower among Latino children in our sample. Targeted interventions that capitalize on existing family resources, emphasize structure, and address parental beliefs about the importance of medications may be of benefit to families from different cultural backgrounds.
This study demonstrates the utility of multiple-dimensional risk models for predicting variations in asthma morbidity in urban children. Research efforts with urban families who have children with asthma need to consider the context of urban poverty as it relates to children's cultural backgrounds and specific asthma outcomes.
The objectives of the present study were to: 1) assess spirometric indices and respiratory impedance with forced oscillation (FO), using impulse oscillometry (IOS) in clinically stable asthmatic children over 3 consecutive days; 2) assess FO reactance (X), using an integrated index and resistance (R) separately during inspiration and expiration; and 3) assess effects on FO of hand support of cheeks vs. no hand support. Our hypotheses were: 1) because of increased sensitivity, IOS manifests day-to-day variability not demonstrable by spirometry; 2) IOS R during expiration exceeds that during inspiration; and 3) hand support of cheeks affects IOS R and X only minimally. We obtained triplicate twice-daily measures of IOS R and X in asthmatic adolescents at summer camp, in a convenience sample of children willing, with parental permission, to undergo repeated testing on consecutive days. Subjects received all medications between 6:30-7:30 AM, and were bronchodilated at time of testing. Subjects underwent IOS tests without hand support of cheeks, followed by tests with both hands supporting cheeks. ANOVA and regression analyses were used to discern technique differences.Significant differences in IOS inspiratory R5, R5 - R15 (frequency dependence of R), and low frequency reactance area (AX) occurred across 3 days, but spirometric indices were unchanged. Inspiratory R at 5 Hz (R5) was significantly smaller than expiratory R5 (P < 0.0001). ANOVA revealed no significant differences between hand and facial muscle cheek support for IOS R and X below 15 Hz, but significant differences occurred above 15 Hz. In conclusion, inspiratory R5, R5 - R15, and AX are sensitive measures for detecting changes in bronchomotor tone in adolescent asthmatic subjects, while expiratory R5 may be influenced by additional factors. Manual support of cheeks does not appear to affect IOS indices of peripheral airway obstruction in adolescent asthmatics. IOS is a practical method for quantifying respiratory mechanics, and its potential role in disease management warrants further study.
Atopic diseases, such as asthma and allergic rhinitis, are common conditions that can influence sleep and subsequent daytime functioning. Children and patients with allergic conditions from ethnic minority groups might be particularly vulnerable to poor sleep and compromised daytime functioning because of the prevalence of these illnesses in these groups and the high level of morbidity. Research over the past 10 years has shed light on the pathophysiologic mechanisms (eg, inflammatory mediators) involved in many atopic diseases that can underlie sleep disruptions as a consequence of the presence of nocturnal symptoms. Associations between nocturnal symptoms and sleep and poorer quality of life as a result of missed sleep have been demonstrated across studies. Patients with severe illness and poor control appear to bear the most burden in terms of sleep impairment. Sleep-disordered breathing is also more common in patients with allergic diseases. Upper and lower airway resistance can increase the risk for sleep-disordered breathing events. In patients with allergic rhinitis, nasal congestion is a risk factor for apnea and snoring. Finally, consistent and appropriate use of medications can minimize nocturnal asthma or allergic symptoms that might disrupt sleep. Despite these advances, there is much room for improvement in this area. A summary of the sleep and allergic disease literature is reviewed, with methodological, conceptual, and clinical suggestions presented for future research.
Objectives Examine 1) the extent to which changes in objectively measured asthma-related lung function (FEV1 % predicted) within a sleep period are associated with sleep quality and sleep duration during that sleep period, in a group of urban children with persistent asthma; and 2) associations between morning and evening asthma-related lung function and sleep quality and duration on the adjacent night, and 3) whether these associations differ by ethnic group. Design Cross-sectional, multi-method approach. Children completed a clinic assessment of asthma and allergy status and used home-based objective measurements of asthma-related lung function and sleep. Setting Children and their caregivers participated in a clinic assessment at an asthma and allergy clinic and completed additional assessments at home. Participants Two hundred and sixteen African American, Latino, and non-Latino white urban children, ages 7–9 years, and their primary caregivers. Measurements Participants took part in a clinic assessment of asthma and allergy status, completed interview-based questionnaires including a diary to track asthma symptoms and sleep patterns, and used actigraphy and home-based spirometry daily across a 4-week period to assess sleep and lung function. Results and Conclusions Results from analyses using structural equation modeling revealed an association between worsening FEV1 and poor sleep quality in the full sample, as well as better asthma-related lung function at night and more optimal sleep efficiency that night. Ethnic group differences emerged in the association with morning or nighttime lung function measurements and sleep quality. Urban minority children with asthma may be at heightened risk for poorer quality sleep. Timing of lung function worsening may be important when considering when and how to improve both asthma health outcomes and sleep quality within specific groups.
Summary Objective Disparities in asthma outcomes exist between Latino and non-Latino white (NLW) children. We examined rates of medication use, medication beliefs, and perceived barriers to obtaining medication in US and island Puerto Rican parents of children with asthma Hypotheses Island PR parents would report the lowest rates of controller medication use, followed by RI Latino and RI NLW parents; Latino parents would report more medication concerns than NLW parents; and Island PR parents would report the most barriers to medication use. Study Design Five hundred thirty families of children with persistent asthma participated, including 231 Island PR, 111 RI NLW, and 188 RI Latino. Parents completed survey measures. Results Group differences were found on reported use of ICS (X2 = 50.96, P <0.001), any controller medication (X2 = 56.49, P <0.001), and oral steroids (X2 = 10.87, P <0.01). Island PR parents reported a greater frequency of barriers to medication use than the other two groups (X2 = 61.13, P <0.001). Latino parents in both sites expressed more medication concerns than NLW parents (F = 20.18, P <0.001). Medication necessity was associated with ICS use in all three groups (all P’s <0.01). Medication concerns were positively associated with ICS use in PR only (OR = 1.64, P <0.05). Conclusions Differences in medication beliefs and the ability to obtain medications may explain the reported disparity in controller medication use. Further studies are needed to evaluate these obstacles to medication use.
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