Table 7.
Comparison of the Modified Medical Research Council (MMRC) Dyspnea Scale and 6-Minute Walk Test (6MWT) between the two groups before and after intervention.
| Item and group | Baseline | After intervention (month) | F1,4 | P | ||||
| 1 | 3 | 6 | 12 | |||||
| MMRC | ||||||||
| Intervention, mean (SD) | 2.27 (1.01) | 1.49 (1.05)a | 1.35 (1.09)a | 1.22 (0.91)a,b,c | 1.13 (0.98)a,b,c,d | 36.306 | .01 | |
| Control, mean (SD) | 2.54 (0.89) | 2.63 (0.86) | 2.62 (0.90) | 12.71 (0.88) | 2.86 (0.79)a,b,c,d | 4.859 | .003 | |
| t1 | 1.537 | 6.537 | 6.996 | 8.626 | 10.728 | |||
| P | .13 | <.001 | <.001 | <.001 | <.001 | |||
| 6MWTe | ||||||||
| Intervention, mean (SD) | 267.40 (121.09) | — | — | 286.63 (125.38)a | 297.28 (113.22)d | 12.932 | <.001 | |
| Control, mean (SD) | 224.07 (102.31) | — | — | 210.18 (101.20)a | 198.89 (98.84)a,d | 37.951 | <.001 | |
| t1 | 1.804 | 3.133 | 4.321 | |||||
| P | .07 | .002 | <.001 | |||||
a Significant compared to baseline.
b Significant compared to 1 month.
c Significant compared to 3 months.
d Significant compared to 6 months.
e The 6MWT was only tested at baseline, 6 months, and 12 months when the participants were at the hospital because this test must be taken in the hospital.