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. 2014 Nov 3;9:1235–1240. doi: 10.2147/COPD.S71383

Table 3.

Correlations of 6MWD and DDR with baseline pulmonary function parameters (n=41)

r P
6MWD
 FEV1 (% predicted) 0.410 0.008
 FEV1/FVC 0.370 0.017
 DLCO (% predicted) 0.479 0.002
DDR
 FEV1 (% predicted) −0.658 <0.001
 FEV1/FVC −0.714 <0.001
 DLCO (% predicted) −0.470 0.002

Note: Spearman’s correlation analyses were used to evaluate the association of 6MWD and DDR with baseline pulmonary function parameters.

Abbreviations: 6MWD, 6-minute walk distance; DDR, desaturation distance ratio; DLCO, diffusing capacity of the lung for carbon monoxide; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity.