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Statistically significant relationships between the MRC chronic dyspnea score and the parameters of the 6 minute walk test (6MWT) in the study population quantified using Spearman's rank correlation coefficient
| 6MWT parameter | MRC score | |
|---|---|---|
| Distance | r | -.781 |
| p | <.001 | |
| SPO2 at initiation | r | -.542 |
| p | .005 | |
| SPO2 at the end | r | -.713 |
| p | <.001 | |
| DSPO2 | r | 0.634 |
| p | .001 |
SPO2 oxygen saturation, DSPO2 difference of saturation between the end and the initiation of the test, BP Blood pressure
