Luo and colleagues are to be commended for evaluating the transition from race‐specific to race‐neutral Global Lung Initiative equations in an Australian cohort. 1 Their overall concordance is reassuring, but the clinical meaning of reclassification deserves careful consideration, particularly for patients near diagnostic thresholds.
In respiratory practice, spirometric interpretation is most consequential at the margins, where small changes in predicted values may determine whether airflow obstruction or restriction is recognised, whether further investigation is pursued and whether specialist review is prompted. The observed reduction in obstruction among South East Asian participants suggests that the impact of race‐neutral equations is not uniform across Asian subgroups. However, East Asian patients were not reported separately, limiting assessment of a group commonly encountered in Australian respiratory clinics. 2
This distinction matters because statistical agreement does not necessarily equate to clinical equivalence. Race‐neutral equations may improve fairness at the population level, but if they alter the detection of clinically meaningful impairment in a subgroup, apparent concordance may not translate into equivalent care. Threshold‐crossing changes therefore warrant cautious interpretation in borderline cases, especially when diagnostic labelling or follow‐up decisions hinge on small differences in predicted values. 3
We therefore support the move towards race‐neutral equations, but their adoption should be guided by subgroup‐specific validation and, ideally, by outcome‐based assessment rather than classification alone. Future studies should report on East Asian patients separately and examine whether reclassification aligns with symptoms, treatment decisions and other clinically relevant endpoints. Until such evidence is available, clinicians should interpret borderline spirometry in East Asian patients cautiously, integrating absolute lung function values and symptom trajectory rather than relying solely on predicted percentages.
Data availability statement
Data sharing not applicable to this article as no datasets were generated or analysed during the current study.
References
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Associated Data
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Data Availability Statement
Data sharing not applicable to this article as no datasets were generated or analysed during the current study.