Long-term trajectories of sleep duration are associated with incident diabetes in middle-to-older-aged Black and White Americans
Authors' conclusion
Adults with suboptimal sleep duration trajectories are more likely to develop incident diabetes. Future research is needed to study how sociodemographic factors modulate this relationship.
Study context
- Population
- 22,285 Black adults (mean age 51.1 ± 8.2 years; 64.8% women) and 13,737 White adults (mean age 54.4 ± 9.0 years; 63.8% women), Southern Community Cohort Study; self-reported sleep duration at baseline and after mean 5 years
- Exposure
- Sleep duration trajectories vs normal-normal trajectory
- Outcome
- Incident diabetes (validated questionnaire)
Methodological detailsmultivariable-adjusted logistic regression
- Multivariable-adjusted logistic regression
Main finding
As reported in the abstract
Incident diabetes
Each group vs normal-normalOdds ratio (95% CI)
Short-normal
1.19(1.09–1.31)
Normal-short
1.14(1.02–1.27)
Short-short
1.17(1.07–1.28)
Long-normal
1.13(0.98–1.30)
Normal-long
1.16(1.00–1.34)
Long-long
1.23(1.02–1.48)
Long-short
1.45(1.19–1.77)
Short-long
1.51(1.28–1.77)
Observational data: associations, not effects.
Further findings
Incident diabetes, stratified by race and socioeconomic status (education, household income)
- Most suboptimal sleep trajectories consistently associated with incident diabetes in all sociodemographic subgroups
- Potential interaction with race (short-long, normal-short) and education (long-long, short-short)
Original publication
Long-term trajectories of sleep duration are associated with incident diabetes in middle-to-older-aged Black and White Americans. Diabetologia. Published 27 June 2024. doi:10.
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