0175 Poor Association Between Subjective and Objective Sleepiness in Patients Evaluated in a Clinical Sleep Center

Abstract Introduction Sleepiness is a primary symptom among patients presenting at sleep clinics. typically subjectively evaluated using the Epworth Scale (ESS), which has been associated with worse cardiovascular outcomes apnea patients. On other hand, functional deficits due to sleepiness can be objectively quantified Psychomotor Vigilance Test (PVT). To better understand presentation of “sleepiness”, we examined relationship between subjective ESS and objective PVT clinical sample. We hypothesized that these two different measures would correlated. Methods A prospective sample being for disorders in Sleep Center University Pennsylvania completed same visit. Demographic data were obtained visit or derived from electronic health record. Pearson’s linear correlations utilized examine association both transformed lapses (sum square root number lapses+1) mean reciprocal response time (RRT) on PVT. Results In total, 167 (98 [58.7%] males) studied, (±SD) age 54.7±16.8 years BMI 34.5±9.9 kg/m2. There similar White (67 [42.1%]) Black (71 [44.7%]) participants 129 (77.3%) had diagnosed suspected obstructive (OSA). Patients an average 8.1±5.4, 10.5±10.6 lapses, 5.9±2.9 RRT 3.4±0.7 seconds-1 Among all patients, there was no statistically significant correlation either (rho = 0.10, p=0.200) -0.10, p=0.201). when comparing restricted OSA. Conclusion Within center, only weak Thus, not reporting daytime have deficits, vice versa. support assessments fully characterize patient’s sleepiness. Future studies should evaluate adverse sleepiness, alone combination. Support (if any)