Why the study?
Prior research on sleep and social determinants of health relied largely on subjective measures or short-term actigraphy, leaving limited evidence on associations with objectively assessed long-term sleep patterns in large populations.
Are more favorable Social Determinants of Health associated with longer and more regular sleep duration?
Population
13,282 participants from the All of US Research Program contributing at least 6 months of Fitbit data
Comparison
Higher vs lower standardized SDOH scores overall and across domains
Design
Observational cohort study using multiple linear regression
Follow-up
Mean 1247 days (range 181-4174)
Key result
A 1-SD increase in overall social determinants of health score was associated with 6.0 minutes (95% CI: 3.4-8.7) longer sleep duration and 3.6 minutes (95% CI: -4.8 to -2.4) lower sleep duration SD.
Authors
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Clinicians should exercise caution generalizing sleep norms across SDOH groups; extends subjective data with objective long-term patterns but leaves open causality.
Observational (n=13,282)
Yes
Are more favorable Social Determinants of Health associated with longer and more regular sleep duration?
Effect estimate: Beta 6.0 minutes (sleep duration) (95% CI 3.4-8.7)
More favorable social determinants of health are associated with modestly longer and more regular objectively measured sleep duration.
Narla et al. (2026) conducted an observational in Sleep duration and variability (n=13,282). Social determinants of health (SDOH) was evaluated on Mean sleep duration and sleep duration standard deviation (Beta 6.0 minutes (sleep duration), 95% CI 3.4-8.7). A 1-SD increase in overall social determinants of health score was associated with 6.0 minutes (95% CI: 3.4-8.7) longer sleep duration and 3.6 minutes (95% CI: -4.8 to -2.4) lower sleep duration SD.