Role of magnetic resonance diffusion tensor imaging in assessment of back muscles in young adults with chronic low back pain

Egyptian Journal of Radiology and Nuclear Medicine

Table 2 Validity of FA and MD in differentiating patients from control group

Variables	AUC (95%CI)	p value	Cutoff point	Sensitivity %	Specificity %	PPV %	NPV %	Accuracy %
FA
Psoas muscle	0.840	< 0.001*	0.546	81.1	72.7	83.3	69.6	77.97
Multifidus muscle	0.875	< 0.001*	0.415	81.1	90.9	93.8	74.1	84.7
Erector spinae muscle	0.809	< 0.001*	0.437	81.1	77.3	85.7	70.8	79.7
MD
Psoas muscle	0.906	< 0.001*	0.9515	89.2	90.9	94.3	83.3	89.8
Multifidus muscle	0.919	< 0.001*	1.29	91.9	90.9	94.3	87.0	91.4
Erector spinae muscle	0.834	< 0.001*	1.224	81.1	72.7	83.3	69.6	77.9

AUC area under curve, PPV positive predictive value, and NPV negative predictive value
*statistically significant if p < 0.05