Fig. 2From: Prevalence, characteristics, and respiratory arousal threshold of positional obstructive sleep apnea in China: a large scale study from Shanghai Sleep Health Study cohortPrevalence of CC-POSA a and APOC-POSA b in different OSA severity groups. AHI apnea–hypopnea index, APOC Amsterdam Positional Obstructive Sleep Apnea Classification, CC Cartwright Classification, POSA positional obstructive sleep apnea, si-POSA supine-isolated positional obstructive sleep apnea, sp-POSA supine-predominant positional obstructive sleep apneaBack to article page