Figure 1. Receiver operator characteristic curve for the cutoff value of apnea-hypopnea index (AHI) in predicting E/A ratio ≤ 1 (an index of ventricular diastolic dysfunction).
The area under curve (AUC) for the cutoff value of AHI ≥ 32.3/h was 0.647. 95% CI: 0.525, 0.769. p = 0.032.