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Correlation of ΔBorg with 6MWD and DDR.
Notes: ΔBorg during the 6MWT was calculated by subtracting the values at baseline from those immediately after walking for 6 minutes. Spearman’s correlation coefficients and P-values are shown. Borg refers to the modified Borg scale scores of subjective sense of dyspnea.
Abbreviations: ΔBorg, change in modified Borg scale scores; 6MWD, 6-minute walk distance; 6MWT, 6-minute walk test; DDR, desaturation distance ratio.
