Table 4.

Correlations (corr) between pathology grade and muscle fatty infiltrate (MFI) using three different MFI quantification methods: T1 intermuscular, T1 subcutaneous, and Dixon.

Spinal level	Muscle	Correlations of MFI with age
		T1 intermuscular		T1 subcutaneous		Dixon
		corr (r)	p	corr (r)	p	corr (r)	p
L6	P	−0.060	0.839	−0.593*	0.025	0.397	0.160
	M	0.444	0.111	−0.277	0.337	0.494	0.073
	L	0.702**	0.005	−0.043	0.884	0.573*	0.032
L5	P	0.060	0.839	−0.702**	0.005	0.253	0.382
	M	0.148	0.613	−0.425	0.130	0.444	0.111
	L	0.148	0.613	−0.552*	0.041	0.263	0.363
L4	P	0.201	0.491	−0.485	0.079	0.079	0.789
	M	0.210	0.471	−0.409	0.147	0.375	0.186
	L	0.306	0.288	−0.466	0.093	0.401	0.155
L3	P	0.158	0.590	−0.597*	0.024	0.229	0.430
	M	0.220	0.450	−0.327	0.253	0.375	0.186
	L	0.253	0.382	−0.440	0.116	0.306	0.287
L2	P	−0.189	0.518	−0.693**	0.006	0.229	0.430
	M	0.184	0.529	−0.320	0.264	0.392	0.166
	L	−0.007	0.981	−0.683**	0.007	0.640*	0.014
L1	P	−0.100	0.733	−0.518	0.058	−0.124	0.672
	M	0.299	0.300	−0.222	0.445	0.444	0.111
	L	−0.014	0.961	−0.545*	0.044	0.349	0.222

*p < 0.05.

**p < 0.01.