Table 6.

Relationships between paraspinal muscle parameters and other factors in patients.

Parameter	MF rtCSA	MF rfCSA	ES rtCSA	ES rfCSA	MF FI	ES FI	MF rSI	ES rSI
Age	-0.056	0.427**	-0.053	0.354*	0.499**	0.415**	0.498**	0.390*
Height	-0.100	-0.195	0.183	-0.100	-0.181	-0.216	-0.217	-0.228
Weight	0.150	0.094	0.378*	0.055	-0.148	-0.108	-0.171	-0.122
BMI	0.246	0.283	0.364*	0.289	0.038	0.145	0.077	0.118

BMI, body mass index; MF, multifidus; ES, erector spinae; FI, fatty infiltration; rtCSA, relative total cross sectional area; rfCSA, relative fatty cross sectional area; rSI, relative signal intensity *means P value < 0.05; **means P value < 0.01.