. Author manuscript; available in PMC: 2019 Sep 1.

Published in final edited form as: Neuromuscul Disord. 2018 Jun 27;28(9):778–786. doi: 10.1016/j.nmd.2018.06.007

Table 2.

Correlations of IBMFRS, Fatigue scale, 6 minute walk test (6MWT) and MRC scale.

		IBMFRS total Score	MRC total Whole body	Fatigue scale Total score	6 MWT Distance
IBMFRS Total score	Pearson correlation	1	0.793	−0.477	0.734
	Sig. (2-tailed)		<0.0001^*	0.008^*	<0.0001^*
	N	46	30	30	26
MRC Total whole body	Pearson correlation	0.793	1	−0.250	0.721
	Sig. (2-tailed)	<0.0001^*		0.200	<0.0001^*
	N	30	34	28	20
Fatigue scale Total score	Pearson correlation	−0.477	−0.250	1	−0.472
	Sig. (2-tailed)	0.008^*	0.200		0.013^*
	N	30	28	30	27
6 MWT	Pearson correlation	0.734	0.721	−0.472	1
	Sig. (2-tailed)	<0.0001^*	<0.0001^*	0.013^*
	N	26	20	27	33

Correlation significant at the <0.01 level (2-tailed).