Efficacy versus Effectiveness in the Treatment of Obstructive Sleep Apnea: CPAP and Oral Appliances

This article compares the concepts of efficacy and effectiveness between CPAP and oral appliance therapy.  Although CPAP is considered more efficacious in bringing down the apnea hypopnea index, or AHI, randomized trials suggest similar improvements in health outcomes between the two treatment modalities.  Health outcomes such as daytime sleepiness, quality of life, driving performance, and…

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