Figure 1. Diagnostic accuracy of phase angle (PA) for distinguishing patients with head and neck cancer with fat mass (FM) ≤16 kg from those with FM>16 kg (A), those with lean mass (LM) ≤44.1 kg from cases with LM 44.1 kg (B), and those with body mass index (BMI) ≤18.5 kg/m2 from those with normal BMI(C). AUC: Area under the curve.