INTRODUCTION: COVID-19 is an infectious respiratory illness that was declared a pandemic in March 2020. During the course of COVID-19, studies have demonstrated worsening sleep quality and anxiety. No studies have examined age-related and sex-specific associations between COVID-19 anxiety and sleep in aging populations. We examined associations between COVID-19 anxiety and sleep, and evaluated age and sex as moderators, in middle-aged/older adults. METHODS: Two hundred and seventy-seven middle-aged/older adults aged 50+ (Mage=64.68, SD=7.83; 44% women) living in the United States who were cognitively healthy (no cognitive impairment/dementia/neurological disorders) completed an online Qualtrics survey in July/August 2020 measuring sleep (Pittsburgh Sleep Quality Index; PSQI) and COVID-19 anxiety (Coronavirus Anxiety Scale; CAS). Multiple regressions examined whether CAS was independently associated with or interacted with age or sex in its associations with PSQI total score/subscores (sleep quality, sleep duration, sleep efficiency, daytime dysfunction), controlling for age, education, number of medical conditions, sleep/pain medication use, and COVID-19 status. RESULTS: CAS interacted with age (B=-.008, SE=.003 p=.02, R-squared=.02), not sex (p=.31), in its association with sleep duration. Higher CAS was associated with shorter sleep duration in oldest-older adults (~73 years old; B=.12, SE=.05, p=.01) and younger-older adults (~65 years old; B=.07, SE=.03, p=.02), not middle-aged adults (~57 years old, p=.47). CAS interacted with age (B=.01, SE=.004, p=.02), not sex (p=.56), in its association with sleep efficiency. Higher CAS was associated with worse sleep efficiency in oldest-older adults (B=.14, SE=.05, p=.009) and younger-older adults (B=.08, SE=.04, p=.03), not middle-aged adults (p=.60). Higher CAS was associated with greater daytime dysfunction (B=.26, SE=.07, p<.001) and higher PSQI total score (B=.82, SE=.33, p=.01), and did not interact with age or sex (ps>.05). CONCLUSION: Increased COVID-19 anxiety is associated with several aspects of worse sleep (shorter sleep duration, sleep efficiency) in older adults but not middle-aged adults. Generally, in middle-aged/older adults, higher COVID-19 anxiety is associated with worse daytime dysfunction and overall sleep quality. Sex does not moderate these associations. Increased COVID-19 morbidity and mortality in aging populations may translate to increased anxiety and subsequent sleep disruptions. Interventions aimed at mitigating negative pandemic-related psychological and sleep outcomes may be particularly relevant for older adults. Support (if any):
672 COVID-19 Anxiety and Sleep in Middle-aged and Older Adults: Impact of Age and Sex