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Spirometry reference equations for children from a Middle Eastern population
1Faculty of Pharmacy, College of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan.
Insights
New spirometry reference equations were developed for Middle Eastern children, improving lung function assessment. These customized equations are more accurate than global standards for this population.
Area of Science:
- Pediatric Pulmonology
- Respiratory Medicine
- Biostatistics
Background:
- Spirometry is crucial for assessing pediatric lung function.
- Existing spirometric reference equations lack universal applicability, particularly for Middle Eastern children.
- Individual characteristics necessitate tailored reference values.
Purpose of the Study:
- To develop specific spirometric reference equations for Middle Eastern children.
- To enhance the accuracy of lung function assessments in the region.
- To provide equations applicable to similar populations.
Main Methods:
- Collected spirometric data from 1576 Jordanian children (ages 6-17).
- Utilized generalized additive models to formulate customized reference equations.
- Compared newly derived equations with Global Lung Initiative 2012 (GLI-2012) predictions.
Main Results:
- New equations demonstrated superior suitability for Middle Eastern children compared to GLI-2012.
- GLI-2012 equation accuracy varied across different age groups.
- Z-score assessments confirmed the improved performance of the new equations.
Conclusions:
- Formulated novel spirometric reference equations tailored for Middle Eastern children.
- These equations can enhance the diagnosis and management of pediatric respiratory diseases.
- Provides a more accurate tool for lung function evaluation in the region.
Background:
Spirometry is a clinically useful test that can be used to assess lung function among children. Different equations had been formulated to determine the spirometric reference values depending on several individual characteristics. However, the widely used equations do not produce perfect suitability for Middle Eastern children.
Objectives:
This study aims to formulate Middle Eastern-specific equations that may be applicable for other populations in the region.
Methods:
The spirometric data were collected from Jordanian children between the ages of 6 and 17 years. The collected data were used to formulate customised reference equations for Middle Eastern children using generalised additive models for location, scale and shape. The newly formulated equation results were compared with Global Lung Initiative 2012 (GLI-2012) equations predicted values.
Results:
Spirometric values for 1576 healthy participants (870 males) were used to formulate the new equations. The assessment of z-scores produced by the present study equations and GLI-2012 indicated that the new equations were more suitable than GLI-2012 for Middle Eastern children. In-depth analysis of the results indicated that the suitability of GLI-2012 equations varied between different age points.
Conclusion:
This study formulated new spirometric reference equations for Middle Eastern children that can improve the diagnosis and management of different respiratory conditions.
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