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Ethnic differences in normal spirometric lung function of Malaysian children

B H Azizi1, R L Henry

  • 1Department of Paediatrics, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur.

Respiratory Medicine
|May 1, 1994
PubMed
Summary

Ethnic differences in lung function were found in Malaysian children, with Chinese children showing higher values than Malay and Indian children. These variations, independent of environmental factors, suggest potential anthropometric influences on respiratory health.

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Area of Science:

  • Pediatric Pulmonology
  • Environmental Health
  • Human Physiology

Background:

  • Spirometry is crucial for assessing lung function in children.
  • Understanding ethnic and environmental influences on pediatric lung function is vital for public health.
  • Malaysian children's lung function data is essential for establishing regional reference values.

Purpose of the Study:

  • To analyze ethnic variations in spirometric lung function among Malaysian children.
  • To investigate the impact of environmental factors on lung function in asymptomatic children.
  • To develop ethnic-specific prediction equations for lung function.

Main Methods:

  • Least square regression analysis of log-transformed spirometric data from 1098 asymptomatic Malaysian children.

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  • Adjustment for covariates including standing height, age, sex, socioeconomic status, and environmental exposures.
  • Comparison of lung function data with existing literature.

    • Main Results:

    • Significant ethnic differences observed in forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), and forced expiratory flow rate (FEF25-75).
    • Kerosene stove exposure was associated with reduced FVC and FEV1.
    • Chinese children exhibited higher lung function values than Malay and Indian children, with Indian children showing the lowest values, independent of environmental factors.

    Conclusions:

    • Ethnic variations in lung function among Malaysian children are significant and potentially linked to anthropometric differences.
    • Environmental factors, such as kerosene stove use, can negatively impact lung function even in symptomless children.
    • Ethnic-specific spirometric prediction equations are necessary for accurate assessment of lung health in Malaysian pediatric populations.