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Multi-ethnic all-age spirometry reference equations: Recent developments
The ERS Task Force “Global Lung Function Initiative”, which addresses reference values for spirometry and transfer factor for CO, is now being hosted by the ERS. Following completion of a highly successful ERS Task Force, it is now 3 years since the Global Lung Function Initiative published their new all-age spirometry equations based on data from 74,187 healthy non-smokers aged 3-95 years (Quanjer et al ERJ 2012). Statistical models generated adjustments for age, sex and height and are applicable to four broad ethnic groups namely Caucasian, African, South East Asian, and North East Asian as well as those of mixed ethnic origins. The new equations aim to correct biases in previous sets that may have been based on antiquated evidence, a limited age range or which failed to adequately account for ethnic differences.
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