Impact of School Start Time Delays and Learning Modality on Sleep Timing and Duration During COVID-19.

OBJECTIVES: To assess the impact of a school start time (SST) delay on adolescent sleep health during the COVID-19 pandemic, and whether there were differences by learning modality. METHODS: Data were collected from a longitudinal study evaluating sleep, education, and health among high school students in Georgia in 2020. Paired t-tests and multivariable linear regression analyses were conducted to examine changes in sleep duration and timing among 9th grade students (n = 134) and their association with the learning modality (remote vs. in-person learner). RESULTS: Students' school day wake times were 1.5 hours later, school night sleep duration was 1.2 hours longer, and social jetlag was 0.9 hours shorter after the school start time delay (all P < .05). The learning modality was a significant predictor of changes in sleep timing but was not associated with changes in sleep duration. CONCLUSIONS: Delayed school start time was associated with positive changes in adolescent sleep health during the COVID-19 pandemic. Sleep timing was affected by the learning modality, however in-person and virtual students had similar gains in sleep duration. Learning modality may be more beneficial for adolescents with early school start times to promote healthier sleep habits.

COVID-19 hardships and self-reported sleep quality among American adults in March and April 2020: Results from a nationally representative panel study.

OBJECTIVE: To analyze the association between coronavirus disease 2019 (COVID-19) hardships and self-reported sleep troubles in a nationally representative sample of adults in the United States. DESIGN: Prospective study in March and April 2020. SETTING: Population-based. PARTICIPANTS: About 8130 respondents who participated in the Pew Research Center's American Trends Panel in March and April of 2020. MEASUREMENTS: Self-reported sleep troubles were defined as a report of 3 or more days per week with trouble sleeping in March and April (separately). Respondents were asked about COVID-19 stressors such as COVID-19 Threat and COVID-19-specific hardships including pay cuts/hours reductions, job loss, and childcare difficulties. Logistic regression models were fit to test associations between COVID-19 hardships and sleep troubles adjusted for sociodemographic covariates (age, gender, race/ethnicity, region, marital status, nativity, education, income, health insurance, and past diagnosis of mental health problems). RESULTS: Reported sleep troubles increased from March (29.0%) to April (31.4%). For March, we found that COVID threat, losing a job, getting a pay cut, and difficulty with childcare were separately associated with sleep troubles. In April, COVID-19 threat and difficulty with childcare, but not losing a job or getting a pay cut were associated with sleep troubles even after additionally accounting for reported sleep troubles in March. CONCLUSIONS: We found that COVID-19-specific stressors, especially a broad measure of COVID-19 Threat and stress over childcare, were associated with sleep troubles in March and April. These findings identified novel stressors related to COVID-19, which may affect the sleep of the American population.

Sleepless in COVID-19: racial disparities during the pandemic as a consequence of structural inequity.

STUDY OBJECTIVES: Insomnia has been on the rise during the 2019 coronavirus disease (COVID-19) pandemic, which may disproportionately affect racial minorities. This study characterized racial disparities in insomnia during the pandemic and evaluated mechanisms for such disparities. METHODS: Participants included 196 adults (48 Black) from a 2016-2017 clinical trial of insomnia treatment who were reevaluated in April 2020. Race was evaluated as a predictor of change in insomnia, impact of COVID-19, and COVID-19 stress. Mediation models using the PRODCLIN method evaluated the extent to which: (1) COVID-19 impact accounted for Black-White disparities in change in insomnia, and (2) COVID-19 stress accounted for associations between discrimination and change in insomnia. RESULTS: Increases in insomnia symptoms during COVID-19 were greater in Black compared to White participants, with 4.3 times the odds of severe insomnia (Insomnia Severity Index ≥ 22). Symptom severity was associated with pre-pandemic experiences of discrimination. Black participants were also disproportionately impacted by COVID-19, with twice the odds of irreparable loss of income/employment and four times the rate of COVID-19 diagnoses in their sociofamilial network compared to White participants. The disproportionate impact of COVID-19 accounted for 69.2% of the relationship between race and change in insomnia severity, and COVID-19 related stress accounted for 66.5% of the relationship between prior history of racial discrimination and change in insomnia severity. CONCLUSIONS: Black-White disparities in insomnia severity during COVID-19 may be driven by structural inequities resulting in the disproportionate impact of COVID-19 on Black Americans. Results lend support for the minority stress model in the context of sleep health. CLINICAL TRIAL REGISTRATION: Sleep to Prevent Evolving Affecting Disorders (SPREAD). NCT number: NCT02988375. https://clinicaltrials.gov/ct2/show/NCT02988375.