Figure 2. Percentage of patients falling into clinical OSA groupings.

This graph illustrates the percentage of patients falling into clinical OSA groupings of none (AHI < 5 events/h), mild (5 ≤ AHI < 15), moderate (15 ≤ AHI < 30), and severe (AHI ≥ 30) based on PSG, HSAT (Nox-T3_home), and in-laboratory portable monitor recording (Nox-T3_lab). Scoring of hypopneas in all recordings required a ≥ 4% oxygen desaturation event. AHI = apnea-hypopnea index, HSAT = home sleep apnea testing, Nox-T3_home = home sleep apnea testing using the Nox-T3 device, Nox-T3_lab = in-laboratory portable monitor recording using the Nox-T3 device, OSA = obstructive sleep apnea, PSG = polysomnogram.