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Bronchial asthma in Malaysia.

I Ross

    British Journal of Diseases of the Chest
    |October 1, 1984
    PubMed
    Summary

    This study found ethnic variations in adult asthma admissions, with lower prevalence in Chinese patients. Male asthma admissions showed a cyclic trend and an overall increase over three years.

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    Area of Science:

    • Pulmonary Medicine
    • Epidemiology
    • Allergy and Immunology

    Background:

    • Asthma admissions represent a significant portion of medical ward cases.
    • Understanding demographic and temporal trends in asthma is crucial for public health.
    • Previous research has indicated ethnic disparities in asthma prevalence.

    Purpose of the Study:

    • To analyze the demographic characteristics of adult asthma admissions.
    • To investigate ethnic variations in asthma prevalence.
    • To examine temporal trends and seasonality in asthma admissions.

    Main Methods:

    • Retrospective analysis of 1099 adult asthma admissions over a 3-year period.
    • Comparison of observed ethnic proportions with expected population data.
    • Statistical analysis of admission trends, seasonality, and patient demographics.

    Main Results:

    • Significant underrepresentation of Chinese patients (32% vs. expected 46%, P < 0.001) and overrepresentation of Malays (31% vs. 23%) and Indians (36% vs. 31%) in asthma admissions.
    • Male asthma admissions exhibited non-seasonal cyclic variation (P < 0.01) and an increasing trend (P < 0.02).
    • Mean age of asthma onset was 33.3 years, with only 14% having onset before age 10. Clinical features suggest extrinsic atopic asthma.

    Conclusions:

    • Ethnic disparities exist in adult asthma admissions, with lower prevalence observed in the Chinese population.
    • Increasing trends and cyclic variations in male asthma admissions warrant further investigation.
    • Adult-onset asthma is common in this population, predominantly presenting as extrinsic atopic asthma.

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