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. 2023 Nov 28;18(11):e0292832. doi: 10.1371/journal.pone.0292832

Fig 4. The forest plot of the mean difference of objective efficacy of mandibular advancement devices (MAD) on obstructive sleep apnea (OSA).

Fig 4

(a) Apnea hypopnea index (AHI), sub-grouped by treatment duration, (b) Apnea hypopnea index (AHI), sub-grouped by baseline severity, (c) Apnea index (AI), (d) Oxygen desaturation index (ODI), (e) The lowest oxygen saturation (LSpO2), and (f) Respiratory disturbance index (RDI).