Figure 1
From: Polysomnographic phenotyping of obstructive sleep apnea and its implications in mortality in Korea

Stacked bar graph showing the distribution of OSA severity in each cluster based on AHI (normal: AHI < 5; mild: AHI < 15; moderate: 15 ≤ AHI < 30; and severe: AHI ≥ 30). AHI apnea–hypopnea index.