Expiratory Time Constant and Sleep Apnea Severity in the Overlap Syndrome Expiratory Time Constant and Sleep Apnea Severity in the Overlap Syndrome Download The Real Role of Sensitivity, Specificity and Predictive Values in the Clinical Assessment A Three-Item Instrument for Measuring Daytime Sleepiness: The Observation and Interview Based Diurnal Sleepiness Inventory (ODSI)