The utility of current criteria for split-night polysomnography for predicting CPAP eligibility.

For justification of CPAP (overall AHI > 15), the sensitivity is slightly lower when using an AHI > 40 vs AHI > 20, but the specificity and PPV are much higher. Using AHI > 20 as criteria for SPL as opposed to the guideline criteria of AHI > 40 may be more effective in obtaining CPAP for patients with moderate to severe OSA.