Abstract P634: Life’s Essential 8 and the Role of Sleep in Atherosclerotic Cardiovascular Disease: Coronary Artery Risk Development in Young Adults (CARDIA) Study and Multi-Ethnic Study of Atherosclerosis (MESA)

Introduction: Sleep affects other cardiovascular health (CVH) behaviors and factors, and it is associated with cardiovascular disease. The AHA recently updated the definition of CVH to include sleep (“Life’s Essential 8”; LE8). Associations of the LE8 CVH score (with or without sleep) with atherosclerotic cardiovascular disease (ASCVD) risk have not been described. Methods: We included CARDIA and MESA participants (ppts), stratified into younger (ages 30-45, n=4332), middle-aged (ages 45-60, n=4793), and older groups (ages 60-75, n=3168). CVH score (range: 0-100) with sleep (8 metrics) and without sleep (7 metrics) was scored separately and categorized by age-specific quartiles. Reclassification of CVH score with the addition of sleep and associations with ASCVD events were assessed at each age. Results: Mean (SD) CVH scores with and without sleep were 72.8 (13.2) and 73.0 (14.2) for younger, 67.1 (14.6) and 65.6 (15.8) for middle-aged, 64.6 (13.6) and 63.0 (14.9) for older ppts. Self-reported Black race and less favorable socioeconomic and psychosocial status were associated with shorter sleep duration, as were lower CVH scores. When sleep was included in the CVH score, 81.9%-83.0% (by age group) of ppts had consistent CVH score quartiles, 7.7%-8.9% were reclassified into a higher CVH score quartile, and 7.8%-9.3% were reclassified into a lower CVH score quartile. Including sleep tended to result in worse CVH scores for men and Black ppts. Higher CVH scores were associated with significantly greater probability of ASCVD-free survival (Figure 1A). Each 10-point higher CVH score was associated with 21%-39% lower hazards for ASCVD across age groups, and the CVH score including sleep had somewhat stronger associations with ASCVD than the CVH score without sleep (Figure 1B). Conclusion: Higher CVH using the LE8 score is associated with lower ASCVD risk. The inclusion of sleep in the CVH score reclassified almost 20% of participants and resulted in somewhat stronger associations between CVH score and ASCVD. Characters: 1730/1750 max allowed Figure 1: Age, sex, race, and education adjusted association of LE8 and ASCVD(A-adjusted ASCVD-free Survival Curves by quartile of CVH score; B-adjusted hazard ratio and 95%CI)