0343 Does Insomnia Symptom Severity Vary By Race/ethnicity?. (12th April 2019) - Williams, Natasha J
Abstract: Introduction: While there is epidemiologic evidence that racial/ethnic minorities report shorter sleep duration and poorer sleep quality than whites, few studies have assessed sleep continuity (SC), variable by variable (e.g., SL, NWAK, WASO, EMA, & TST). The present analysis assesses in a quantitative way whether insomnia symptom severity varies by race/ethnicity. Methods: An archival analysis was conducted on an existing database of 4, 206 individuals who completed a screening survey on-line atwww.sleeplessinphilly.com . Variables collected included estimates for: sleep latency (SL), number of awakenings (NWAK), wake after sleep onset (WASO), early morning awakenings (EMA) and total sleep time (TST). Results: The sample for the present analysis was comprised of 2, 049 whites (63.4%), 1, 007 blacks (31.2%), and 175 Hispanics (5.4%). The overall mean age was 39.0±14.7, 60.4% of the sample was female, and the average BMI was 28.0±7.1. For all SC variables, blacks significantly differed from whites: SL (49.2±38.3 vs. 42.8±30.5; p<.001); NWAK (2.64±1.7 vs. 2.50±1.6; p<.001); WASO (47.3±43.4 vs. 29.9±30.5; p<.000); EMA (63.4±41.8 vs. 57.2±33.0; p<.000); Hispanics did not significantly differ from whites with respect to the above measures. For self-reported TST, blacks and Hispanics significantly differed from whites (316.4±85.1; 356.2±73.7; 365.8±80.6, respectively; p<0.000). Conclusion: Our results suggest that blacks exhibit marginally worse sleep continuity (statistically significant owing to the large sample sizes) and shorter TSTs. Analysis is ongoing to evaluate Time in Bed [TIB], calculated TST, SE%, sleep period, sleep schedule differences, and percentage of group with Insufficient Sleep Disorder by race, in matched samples. Support (If Any): SUPPORT:R01AG041783;K24AG055602;R01AT003332;K23HL125939