Childhood asthma prevalence in northern Puerto Rico, the Rio Grande, and Loíza experience

Impact of Hurricane Maria on mold levels in the homes of Piñones, Puerto Rico

Hurricane Maria struck Puerto Rico on September 20, 2017, severely impacting the island. In order to quantify the impact of the hurricane on the indoor air quality, we evaluated the fungal levels in households (n = 20) of the Piñones community for the period of 2018 and 2019. For each dust sample collected, the 36 Environmental Relative Moldiness Index (ERMI) molds were quantified using qPCR assays, and then Shannon Diversity Index (SDI) values for the fungal populations were calculated. Homes were in five separate regions, regarding their proximity in the studied area. We found that for regions with reported least water damage, the SDI values were similar for both sampled years, but for regions that reported mid-to-high level of damage region, the SDI values were significantly higher. Households that reported remediation actions between the two sampled years showed similar values for the second year as those that did not report any major impact. Our preliminary data provides insights into the significant impacts of hurricanes into indoor fungal environment.

Asthma-related health services and asthma control among women in Puerto Rico

Objectives:

This study evaluates social, behavioral, and environmental determinants to differentiate between active and inactive asthma and how predisposing, enabling, and need factors elucidate asthma-related health services and asthma control among women in Puerto Rico.

Methods:

This study analyzed secondary cross-sectional data from a subsample of 625 adult females who participated in the Asthma Call Back Survey in Puerto Rico. Logistic and multinomial regression analyses were conducted to examine associations between explanatory variables and asthma outcomes.

Results:

In total, 63% of women reported active asthma, from which 37.9% have not well controlled or very poorly controlled asthma. Women with active asthma were significantly more likely to be out of work, have middle income (US$25,000–<US$35,000), and be obese (≥30 kg/m²). Perceived need of health status is a good predictor to know the odds ratio of women to use emergency room. Women with poorly controlled asthma were significantly associated with increased units of physician urgent visits and emergency room visits.

Conclusion:

The findings confirmed significant determinants for active asthma and adds information on odds ratio for sensitive subgroups that utilize asthma-related health services in higher proportion than their counterparts. These associations suggest a development of asthma management plan targeting women to control the condition and reduce health-care utilization.

Identification of Immunoglobulin E-Binding Proteins of the Xerophilic Fungus Aspergillus penicillioides Crude Mycelial Mat Extract and Serological Reactivity Assessment in Subjects with Different Allergen Reactivity Profiles

BACKGROUND

Aspergillus penicillioides is a very common indoor xerophilic fungus and potential causative agent of respiratory conditions. Although people are constantly exposed to A. penicillioides, no proteins with allergenic potential have been described. Therefore, we aim to confirm allergic sensitization to A. penicillioides through reactivity in serological assays and detect immunoglobulin E (IgE)-binding proteins.

METHODS

In an indirect ELISA, we compared the serological reactivity to A. penicillioides between subjects with specific IgE (sIgE) (group 1, n = 54) and no sIgE reactivity (group 2, n = 15) against commercial allergens. Correlations and principal component analysis were performed to identify associations between reactivity to commercial allergens and A. penicillioides. IgE-binding proteins in A. penicillioides were visualized using Western blotting (WB) in group 1. The IgE-binding proteins with the highest reactivity were analyzed by mass spectrometry and confirmed by transcript matching.

RESULTS

There was no statistical significance (p = 0.1656) between the study groups in serological reactivity. Correlations between reactivity to A. penicillioides, dog epithelia, Aspergillus fumigatus, and Penicillium chrysogenum were observed. WB experiments showed 6 IgE-binding proteins with molecular weights ranging from 45 to 145 kDa. Proteins of 108, 83, and 56 kDa showed higher reactivity. Mass spectrometry analysis of these 3 proteins led to the putative identification of NADP-specific glutamate dehydrogenase and catalase B. This was confirmed with transcriptome analysis.

CONCLUSIONS

These results provide evidence of the presence of potential allergenic components in A. penicillioides. Further analysis of the putatively identified proteins should reveal their allergenic potential.

Effectiveness of a multi-level asthma intervention in increasing controller medication use: a randomized control trial

INTRODUCTION

Poor self-management by families is an important factor in explaining high rates of asthma morbidity in Puerto Rico, and for this reason we previously tested a family intervention called CALMA that was found effective in improving most asthma outcomes, but not effective in increasing the use of controller medications. CALMA-plus was developed to address this issue by adding to CALMA, components of provider training and screening for asthma in clinics.

METHODS

Study participants were selected from claims Medicaid data in San Juan, Puerto Rico. After screening, 404 children in eight clinics were selected after forming pairs of clinics and randomizing the clinics) to CALMA-only or CALMA-plus.

RESULTS

For all three primary outcomes at 12 months, the mean differences between treatment arms were small but in the predicted direction. However, after adjusting for clinic variation, the study failed to demonstrate that the CALMA-plus intervention was more efficacious than the CALMA-only intervention for increasing controller medication use, or decreasing asthma symptoms. Both groups had lower rates of asthma symptoms and service utilization, consistent with previous results of the CALMA-only intervention.

CONCLUSIONS

Compliance of providers with the intervention and training, small number of clinics available and the multiple barriers experienced by providers for medicating may have been related to the lack of difference observed between the groups. Future interventions should respond to the limitations of the present study design and provide more resources to providers that will increase provider participation in training and implementation of the intervention.

Mold populations and dust mite allergen concentrations in house dust samples from across Puerto Rico

Lifetime childhood asthma prevalence (LCAP) percentages in Puerto Rico Health Regions (HR) are substantially higher in northeastern vs. southwestern HR. Higher average relative humidity in the northeast might promote mold and mite exposures and possibly asthma prevalence. To test this hypothesis, mold contamination, Environmental Relative Moldiness Index (ERMI) values were measured in floor dust (n = 26) and dust mite allergen concentrations in bed dust (n = 14). For this analysis, the eight HR were divided into those with LCAP > 30% (n = 3) and <  30% (n = 5). The average ERMI value was significantly greater (Wilcoxon Rank Sum, p < 0.001) in high than in low LCAP HR (14.5 vs. 9.3). The dust mite antigens Der p 1, Der f 1, and Blo t 5 were detected in 90% of bed samples, but the concentrations were not significantly different in high vs. low LCAP HR. Mold exposures might partially explain the differences in LCAP HR in Puerto Rico.

Results from a community-based trial testing a community health worker asthma intervention in Puerto Rican youth in Chicago

Abstract Objective: Puerto Rican children suffer disproportionately from asthma. Project CURA tested the efficacy of a community health worker (CHW) intervention to improve use of inhaled corticosteroids (ICS) and reduce home asthma triggers in Puerto Rican youth in Chicago.

METHODS

This study employed a behavioral randomized controlled trial design with a community-based participatory research approach. Medications and technique were visually assessed; adherence was determined using dose counters. Home triggers were assessed via self-report, visual inspection and salivary cotinine. All participants received education on core asthma topics and self-management skills. Participants in the CHW arm were offered home education by the CHW in four visits over four months. The attention control arm received four newsletters covering the same topics.

RESULTS

While most of the participants had uncontrolled persistent asthma, <50% had ICS at baseline. In the CHW arms, 67% of participants received the full four-visit intervention. In the Elementary school cohort (n=51), the CHW arm had lower odds of having an ICS (OR=0.2; p=0.02) at 12-months; no differences were seen in other outcomes between arms at any time point. The only significant treatment arm difference in the high school cohort (n=50) was in inhaler technique where the CHW arm performed 18.0% more steps correct at five months (p<0.01) and 14.2% more steps correct at 12 months (p<0.01).

CONCLUSIONS

While this CHW intervention did not increase the number of participants with ICS or reduce home asthma triggers, important lessons were learned including challenges to CHW intervention fidelity and the need for CHWs to partner with clinical providers.

Asthma and suicidal ideation and behavior among Puerto Rican older children and adolescents

There is growing evidence of a positive association between asthma and suicidal ideation and behavior in the general community, although information on this potential association is scarce among older children and adolescents and Puerto Ricans, groups at risk for both conditions. Data came from wave 3 of the Boricua Youth Study, a longitudinal study of youth in the Bronx and San Juan conducted from 2000 to 2004. Logistic regressions for correlated data (Generalized Estimating Equation) were conducted, with asthma predicting suicidal ideation and behavior among participants 11 years or older. After adjustment for survey design; age; sex; poverty; Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, mental disorders; cigarette smoking; and stressful life events, asthma was positively associated with suicidal ideation and behavior among the Puerto Rican older children and adolescents. Public health interventions targeting Puerto Rican older children and adolescents with asthma and future studies investigating potential biological and psychological mechanisms of association are warranted.

The longitudinal relationship between parental reports of asthma and anxiety and depression symptoms among two groups of Puerto Rican youth

OBJECTIVES

This study aims to examine the relationship between parental reports of child asthma and levels and slopes of anxiety and depression symptoms among two contrasting groups of Puerto Rican youth, and to determine whether asthma is a special risk above and beyond parents' reports of other youths' medical conditions.

METHODS

Two probability samples of youth in San Juan and Caguas, Puerto Rico (n=673) and in the south Bronx, New York (n=598), and their caretakers were interviewed in three yearly assessments. Parental reports of their children's asthma during each assessment were used to indicate whether youth had intermittent (PR=34%, NY=23%) or persistent (PR=7%, NY=16%) asthma. Youths' depression and anxiety symptoms were assessed using self reports to the DISC-IV. Information on youths' medical comorbidity was gathered through parental reports.

RESULTS

Multilevel analyses adjusting for comorbid medical conditions indicated that parental reports of youths' intermittent and persistent asthma were related to higher levels, but similar slopes, of anxiety and depression among youth in New York. In Puerto Rico, youth with persistent asthma experienced less improvement in anxiety over time than youth without asthma, but no other associations were found.

CONCLUSION

Having asthma, based on parental reports, represents a risk factor for Puerto Rican youths' internalizing symptoms, even after adjusting for comorbid medical conditions. This risk is more pronounced among youth living in New York, which highlights the importance of considering the social context in which youth develop and minority status when examining associations between physical health risk factors and mental health.

Recruitment, asthma characteristics, and medication behaviors in Midwestern Puerto Rican youth: data from Project CURA

BACKGROUND

Puerto Rican children have the highest prevalence of asthma, but detailed descriptions of this population have been limited to the island of Puerto Rico and the northeastern United States.

OBJECTIVE

To describe the asthma characteristics of this urban Midwest cohort of Puerto Rican youth, focusing on medication behaviors, and to test whether their asthma outcomes are associated with their demographic and psychosocial variables.

METHODS

Data are from the baseline cohorts of a randomized controlled trial designed to improve medication adherence in Puerto Rican youth. Recruitment used a community-based participatory research approach. Data were collected in the home. Medications and medication technique were visually assessed, and adherence was determined using electronic medication monitors or counters. Data on asthma symptoms and morbidity, demographics, and psychosocial factors were collected.

RESULTS

The recruitment of 101 participants (51 in elementary school and 50 in high school) was completed in 14 months. Despite overall high asthma severity and poor asthma control, 20% of participants had no reliever medicine in their home. Self-report of controller use was higher than actual controller medications visualized in the home. For those who had an inhaled corticosteroid medicine (only 45% of elementary school participants and 12% of high school participants), median adherence was 1.0 doses per day. Rates of depression and stress were very high among both caregivers and children.

CONCLUSION

Puerto Rican youth in the Midwest bear a significant asthma burden in addition to other stressors, including depression. Visual inspection of medications and monitoring of adherence are critical for understanding asthma morbidity in this high-risk population.

Disparities in asthma medication dispensing patterns: the case of pediatric asthma in Puerto Rico

BACKGROUND

Disparities exist in asthma medication dispensing between children with public insurance and those with private insurance under a Managed Care Medicaid system in Puerto Rico.

OBJECTIVES

Island-wide medical claims data were used to examine the extent to which differences between the private and public health care sectors affect medication dispensing and health care utilization among asthmatic children.

METHODS

Children 3-18 years old with at least one service claim [outpatient, hospitalization, or emergency department (ED) visit] for asthma or reactive airway disease from 2005 to 2006 were selected. Chi-square analyses compared medication dispensing and health care utilization between the public and private sectors. Negative binomial regression identified factors associated with the mean dispensing rate of prescriptions for anti-inflammatory controller medication (CM).

RESULTS

Private insurance families (n = 28,088) were dispensed significantly more CM (48.3% vs. 12.0%) and quick relief medication (47.4% vs. 44.6%) than public insurance families (n = 13,220). The dispensing of inhaled corticosteroids (24.4% vs. 6.7%) and leukotriene modifiers and cromolyn (31.4% vs. 5.7%) was dramatically higher in the private sector. In contrast, emergency room use was significantly higher among public insurance children (51.7% vs. 13.8%). Multivariate analysis showed that age, number of β-agonists, and type of insurance was associated with CM dispensing; private insurance showed the greatest effect.

CONCLUSION

Asthmatic Puerto Rican children enrolled in public insurance were significantly less likely to be dispensed CM than children with private insurance; suggesting that under-treatment of public insured children may substantially contribute to increased asthma morbidity in this population as evidenced by significantly higher rates of ED visits.

CAPSULE SUMMARY

A disparity exists in asthma medication dispensing between children with public insurance compared with those with private insurance under a Managed Care Medicaid system in Puerto Rico. If asthma disparities in medication dispensing are to be reduced, then a better understanding of the complex ways in which multiple variables related to the health care system policies, socioeconomic factors, family and provider interactions, as well as the relative weight that each one contributes to the observed inequalities is needed.

Health burden of co-morbid asthma and allergic rhinitis in West Indian children

BACKGROUND

Co-morbid allergic rhinitis (AR) and asthma has not been studied in Caribbean countries where there is a high prevalence of childhood asthma.

METHODS

Using the International Primary Care Airways Group (IPAG) guidelines to determine AR, care-givers of 393 (response rate=100%) children attending asthma clinics in selected public sector health facilities in Trinidad, West Indies, were interviewed.

RESULTS

Children (393) were between 2-17 years and included 239 (60.8%) boys and 154 (39.2%) girls. As many as 53.9% of children sampled (95% CI 45.9-55.8) suffered from AR. Children exposed to household smoking were nearly twice as likely to have AR (p<0.0041, OR=1.9, CI 1.22-2.88). Significantly (p<0.01) more asthmatics with AR (154, 58.6%) visited Accident and Emergency (A&E) in the past 12 months. The odds of visiting A&E at least once in the past 12 months for asthmatics with AR were 1.75 (95% CI 1.15-2.68). The average frequency of A&E visits was higher in children who also suffered from AR (1.75 vs 1.36, p<0.04). Age was negatively correlated (-0.21, p<0.005) with exacerbation frequency for asthmatics without AR suggesting A&E visits are independent of age in co-morbid disease. More children with AR (>60%) suffer day and night symptoms (p<0.001), and miss school (59.8%) (p<0.03) at least once a week (p<0.002) than asthmatics without AR (OR=1.5, 95% CI=1.03-2.30).

CONCLUSIONS

AR is prevalent in 53.9% of Trinidadian children with asthma. The burden of co-morbid disease in asthmatic children is associated with increased likelihood of asthma-related A&E visits, day and night symptoms and absence from school.

Risk for asthma in offspring of asthmatic mothers versus fathers: a meta-analysis

BACKGROUND

Many human epidemiologic studies demonstrate that maternal asthma confers greater risk of asthma to offspring than does paternal disease. However, a handful have shown the opposite. Given this disparity, a meta-analysis is necessary to determine the veracity and magnitude of the "maternal effect."

METHODOLOGY/PRINCIPAL FINDINGS

We screened the medical literature from 1966 to 2009 and performed a meta-analysis to compare the effect of maternal asthma vs. paternal asthma on offspring asthma susceptibility. Aggregating data from 33 studies, the odds ratio for asthma in children of asthmatic mothers compared with non-asthmatic mothers was significantly increased at 3.04 (95% confidence interval: 2.59-3.56). The corresponding odds ratio for asthma in children of asthmatic fathers was increased at 2.44 (2.14-2.79). When comparing the odds ratios, maternal asthma conferred greater risk of disease than did paternal asthma (3.04 vs. 2.44, p = 0.037). When analyzing the studies in which asthma was diagnosed by a physician the odds ratios were attenuated and no significant differences were observed (2.85 vs. 2.48, N = 18, p = 0.37). Similarly, no significant differences were observed between maternal and paternal odds ratios when analyzing the studies in which the patient population was 5 years or older (3.15 vs. 2.60, p = 0.14). However, in all cases the trend remained the same, that maternal asthma was a greater risk factor for asthma than paternal.

CONCLUSIONS/SIGNIFICANCE

The results show that maternal asthma increases offspring disease risk to a greater extent than paternal disease.

Maternal mental health and childhood asthma among Puerto Rican youth: the role of prenatal smoking

RATIONALE

Childhood asthma is a major public health problem, with mainland and island Puerto Rican children having the highest asthma rates of any ethnic group in the United States.

OBJECTIVES

To examine the relationship between maternal mental health problems, prenatal smoking, and risk of asthma among children in Puerto Rico and the Bronx, New York.

METHODS

A cross-sectional community-based study was conducted in the South Bronx in New York City and the San Juan Standard Metropolitan Area in Puerto Rico. Participants were Puerto Rican children 5 to 13 years of age and their adult caretakers with probability samples of children 5 to 13 years of age and their caregivers drawn at two sites: the South Bronx in New York City (n = 1,135) and San Juan and Caguas, Puerto Rico (n = 1,351).

MEASUREMENTS

Self-reported maternal mental health, prenatal smoking, and rates of childhood asthma. Results. Maternal mental health problems were associated with significantly higher levels of prenatal smoking, compared with that among women without mental health problems (p < 0.0001). Both maternal mental health problems and prenatal smoking appear to make a contribution to increased odds of asthma among youth. After adjusting for prenatal smoking, the relationship between maternal mental health problems and childhood asthma was no longer statistically significant.

CONCLUSIONS

Previous research suggests children of Puerto Rican descent are especially vulnerable to asthma. Our results suggest that maternal mental health problems and prenatal smoking are both associated with increased odds of asthma among Puerto Rican youth and that prenatal smoking may partly explain the observed relationship between maternal psychopathology and childhood asthma. Future longitudinal and geographically diverse epidemiological studies may help to identify the role of both maternal mental health problems and prenatal smoking in the health disparities in childhood asthma.

Beliefs and barriers to medication use in parents of Latino children with asthma

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 (X(2) = 50.96, P < 0.001), any controller medication (X(2) = 56.49, P < 0.001), and oral steroids (X(2) = 10.87, P < 0.01). Island PR parents reported a greater frequency of barriers to medication use than the other two groups (X(2) = 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.

Issues and methods in disparities research: the Rhode Island-Puerto Rico asthma center

BACKGROUND

Epidemiologic studies have documented higher rates of asthma prevalence and morbidity in minority children compared to non-Latino white (NLW) children. Few studies focus on the mechanisms involved in explaining this disparity, and fewer still on the methodological challenges involved in rigorous disparities research.

OBJECTIVES AND METHODS

This article provides an overview of challenges and potential solutions to research design for studies of health disparities. The methodological issues described in this article were framed on an empirical model of asthma health disparities that views disparities as resulting from several factors related to the healthcare system and the individual/community system. The methods used in the Rhode Island-Puerto Rico Asthma Center are provided as examples, illustrating the challenges in executing disparities research.

RESULTS

Several methods are described: distinguishing ethnic/racial differences from methodological artifacts, identifying and adapting culturally sensitive measures to explain disparities, and addressing the challenges involved in determining asthma and its severity in Latino and other minority children. The measures employed are framed within each of the components of the conceptual model presented.

CONCLUSIONS

Understanding ethnic and/or cultural disparities in asthma morbidity is a complicated process. Methodologic approaches to studying the problem must reflect this complexity, allowing us to move from documenting disparities to understanding them, and ultimately to reducing them.

Conundrums in childhood asthma severity, control, and health care use: Puerto Rico versus Rhode Island

BACKGROUND

The lifetime prevalence of self-reported asthma among Puerto Ricans is very high, with increased asthma hospitalizations, emergency department visits, and mortality rates. Differences in asthma severity between the mainland and island, however, remain largely unknown.

OBJECTIVE

We sought to characterize differences in asthma severity and control among 4 groups: (1) Island Puerto Ricans, (2) Rhode Island (RI) Puerto Ricans, (3) RI Dominicans, and (4) RI whites.

METHODS

Eight hundred five children aged 7 to 15 years completed a diagnostic clinic session, including a formal interview, physical examination, spirometry, and allergy testing. Using a visual grid adapted from the Global Initiative for Asthma, asthma specialists practicing in each site determined an asthma severity rating. A corresponding level of asthma control was determined by using a computer algorithm.

RESULTS

Island Puerto Ricans had significantly milder asthma severity compared with RI Puerto Ricans, Dominicans, and whites (P < .001). Island Puerto Ricans were not significantly different from RI whites in asthma control. RI Puerto Ricans showed a trend toward less control compared with island Puerto Ricans (P = .061). RI Dominicans had the lowest rate of controlled asthma. Paradoxically, island Puerto Ricans had more emergency department visits in the past 12 months (P < .001) compared with the 3 RI groups.

CONCLUSIONS

Potential explanations for the paradoxic finding of milder asthma in island Puerto Ricans in the face of high health care use are discussed. Difficulties in determining guideline-based composite ratings for severity versus control are explored in the context of disparate groups.

The role of caregivers' depressive symptoms and asthma beliefs on asthma outcomes among low-income Puerto Rican children

OBJECTIVE

To examine the relationship between depressive symptoms and asthma beliefs (self-efficacy and empowerment), child asthma outcomes, and caregiver's quality of life among Puerto Rican caregivers of children with asthma.

METHODS

The caregivers of 221 children with persistent bronchial asthma were stratified into those with no/low or high levels of depressive symptoms. Differences between the groups in caregiver self-efficacy, family empowerment, child asthma outcomes, and quality of life were examined.

RESULTS

Caregivers with more depressive symptoms reported lower self-efficacy, less empowerment, less symptom-free days and nights for their children, and a lower quality of life compared to caregivers with no or fewer depressive symptoms.

CONCLUSIONS

Depressive symptoms among Puerto Rican caregivers were associated with asthma beliefs, children's asthma symptoms, and caregiver quality of life. Our findings reinforce the importance of physician screening skills in recognizing caregiver depression in parents of asthma patients.

Reducing asthma health disparities in poor Puerto Rican children: the effectiveness of a culturally tailored family intervention

BACKGROUND

Island and mainland Puerto Rican children have the highest rates of asthma and asthma morbidity of any ethnic group in the United States.

OBJECTIVE

We evaluated the effectiveness of a culturally adapted family asthma management intervention called CALMA (an acronym of the Spanish for "Take Control, Empower Yourself and Achieve Management of Asthma") in reducing asthma morbidity in poor Puerto Rican children with asthma.

METHODS

Low-income children with persistent asthma were selected from a national health plan insurance claims database by using a computerized algorithm. After baseline, families were randomly assigned to either the intervention or a control group.

RESULTS

No significant differences between control and intervention group were found for the primary outcome of symptom-free days. However, children in the CALMA intervention group had 6.5% more symptom-free nights, were 3 times more likely to have their asthma under control, and were less likely to visit the emergency department and be hospitalized as compared to the control group. Caregivers receiving CALMA were significantly less likely to feel helpless, frustrated, or upset because of their child's asthma and more likely to feel confident to manage their child's asthma.

CONCLUSION

A home-based asthma intervention program tailored to the cultural needs of low income Puerto Rican families is a promising intervention for reducing asthma morbidity.

Area of residence, birthplace, and asthma in Puerto Rican children

RATIONALE

Puerto Ricans have the highest prevalence of asthma among all ethnic groups in the United States. There have been no studies that directly compare the burden of asthma between Puerto Ricans living in Puerto Rico and those living in the mainland United States.

OBJECTIVE

To examine the relation between birthplace, area of residence, and asthma in Puerto Rican children.

METHODS

Multistage population-based probability sample of children in the San Juan and Caguas metropolitan areas in Puerto Rico and in the Bronx, NY. Information was collected in a household survey of 2,491 children and their primary caretakers.

RESULTS

The overall prevalence of asthma among Puerto Rican children in this study was very high (38.6%). Although children from Puerto Rico had higher socioeconomic status and lower rates of premature birth and prenatal smoke exposure, the prevalence of lifetime asthma was higher in Puerto Rican children living in Puerto Rico than in Puerto Rican children living in the South Bronx (41.3% vs 35.3%, p = 0.01). In multivariable analysis, residence in Puerto Rico was associated with increased odds of lifetime asthma (odds ratio [OR], 1.27; 95% confidence interval [CI], 1.03 to 1.57) and lifetime hospitalization for asthma (OR, 1.47; 95% CI, 1.04-2.07).

CONCLUSIONS

Puerto Rican children in Puerto Rico had a higher risk of asthma than Puerto Rican children in the South Bronx, highlighting the need for further examination of the roles of migration, acculturation, and environmental and psychosocial factors on the development of asthma in this high-risk population.