Lung function in Malay children

Area of Science:

• Pediatric Pulmonology
• Respiratory Physiology
• Public Health

Background:

• Establishing normative lung function data is crucial for identifying respiratory abnormalities in children.
• Malay children represent a distinct ethnic group for whom specific lung function reference values are needed.
• Previous studies have highlighted ethnic variations in lung function parameters.

Purpose of the Study:

• To measure peak expiratory flow rate (PEFR), forced vital capacity (FVC), and forced expiratory volume in 1 second (FEV1) in healthy Malay primary school children.
• To develop prediction equations for these lung function indices specific to Malay children.
• To compare lung function values of Malay children with those of other ethnic groups.

Main Methods:

• Cross-sectional study involving 920 Malay primary school children (aged 7-12 years) for PEFR measurements.
• Spirometry performed on 292 children to assess FVC and FEV1.
• Statistical analysis to determine correlations between lung function parameters, age, and height.

Main Results:

• PEFR showed significant correlations with both age and height.
• FVC and FEV1 were significantly correlated with height only.
• Prediction equations for PEFR, FVC, and FEV1 were formulated for Malay boys and girls.
• Lung function values in Malay children were found to be lower than those reported for Western and Chinese children.

Conclusions:

• Height is a key determinant for lung function (FVC, FEV1) in Malay children, while age also influences PEFR.
• The developed prediction equations provide ethnic-specific reference values for assessing respiratory health in Malay children.
• The lower lung function observed in Malay children warrants further investigation into potential contributing factors.