Table 3

Correlations between total and dimensional scores of the MCFS and the FACIT fatigue scale, Borg scale, BODE index, SGRQ and MRC dyspnoea scale

	FACIT fatigue scale	Fatigue (Borg scale) at baseline	Fatigue (Borg scale) after 6MWD	BODE scores	Total SGRQ	Symptom	Activity	Impact	MRC dyspnoea scale
Total fatigue score	−0.81	0.53	0.63	0.46	0.8	0.51	0.72	0.79	0.51
Physical dimension	−0.7	0.48	0.66	0.52	0.8	0.52	0.75	0.77	0.54
Cognitive dimension	−0.78	0.5	0.5	0.29	0.62	0.39	0.56	0.61	0.38
Psychosocial dimension	−0.84	0.48	0.56	0.42	0.74	0.47	0.65	0.76	0.45

All presented correlations have a p value <0.001
BODE, multidimensional index (B, body mass index; O, obstruction of airways as measured by forced expiratory volume in 1 s; D, dyspnoea as measured by the MRC scale; E, exercise capacity as measured by the 6MWD test); FACIT, Functional Assessment of Chronic Illness Therapy; MCFS, Manchester chronic obstructive pulmonary disease fatigue scale; MRC, Medical Research Council; 6MWD, 6 minute walk distance; SGRQ, St George’s Respiratory Questionnaire.