Figure 2From: Body composition in obstructive sleep apneahypopnea syndrome bio-impedance reflects the severity of sleep apneaComposizione corporea nella sindrome delle apneeostruttive nel sonno La bio-impedenza riflette la gravità del quadro notturnoCorrelation between the AHI and the neck circumference. Definition of abbreviation: AHI, apnea-hypopnea index.Back to article page