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. 2023 Jun 1;6(6):e2316174. doi: 10.1001/jamanetworkopen.2023.16174

Figure 1. Association of Race-Neutral Reference Equations With the Identification of Obstructive, Restrictive, Mixed, and Nonspecific Respiratory Impairments.

Figure 1.

Alluvial plots depict changes in the interpretation of White (A) and Black (B) individuals as having mixed, obstructive, restrictive, and nonspecific respiratory impairments and normal lung function when comparing the race-specific 2012 Global Lung Function Initiative reference equations and the race-neutral Global Lung Function Initiative Global reference equations. Strata within each axis represent the interpretations resulting from the application of American Thoracic Society/European Respiratory Society guidelines with the race-specific reference equations and the race-neutral Global reference equations, respectively. Alluvia between axes represent changes in interpretation between the 2 sets of reference equations. Red alluvia represent individuals for whom the use of the race-neutral reference equations resulted in a new respiratory impairment while green flows represent the resolution of a respiratory impairment.