Evidence map›Paper›PMID 32772984›Full record

ArticlePublic health nutrition2021

Is late bedtime an overlooked sleep behaviour? Investigating associations between sleep timing, sleep duration and eating behaviours in adolescence and adulthood.

Anna H Grummon, Rebeccah L Sokol, Leslie A Lytle

Abstract read
In one paragraph

Article in Public health nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

  1. Racial/ethnic disparities in grade point averages and absences among 9th graders in Georgia: the role of sleep differences.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2026
    Article
  2. Observational
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  4. Article
  5. A Narrative Review on Sleep and Eating Behavior.Current diabetes reports · 2025
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Anna H GrummonCenter for Population and Development Studies, Harvard TH Chan School of Public Health, Cambridge, MA02138, USA.ORCID 0000-0002-8705-038X
Rebeccah L SokolDepartment of Health Behavior & Health Education, University of Michigan School of Public Health, Ann Arbor, MI48109, USA.
Leslie A LytleDepartment of Health Behavior, Gillings School of Global Public Health, University of North Carolina Chapel Hill, Chapel Hill, NC27599, USA.

Funding

Wave IV Data CollectionP01HD031921 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI HARRIS, KATHLEEN MULLAN · 1994 to 2020
$86.1M
POPULATION STUDIEST32HD007168 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI ELIZABETH A FRANKENBERG · 1985 to 2026
$13.8M
Research Services CoreP2CHD050924 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KAREN B GUZZO · 2015 to 2026
$9.6M
Human Development: Interdisiplinary Research TrainingT32HD007376 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BELGER, AYSENIL, PROPPER, CATHI BARBRA · 1988 to 2020
$8.0M
NICHD NIH HHS P01 HD031921NICHD NIH HHS P2C HD050924NICHD NIH HHS T32 HD007168NICHD NIH HHS T32 HD007376
6 · The paper itself

Abstract

objectiveTo examine whether bedtime is associated with usual sleep duration and eating behaviour among adolescents, emerging adults and young adults.

designCross-sectional multivariable regression models, stratified by developmental stage, to examine: (1) association between bedtime and sleep duration and (2) associations between bedtime and specific eating behaviours at each developmental period, controlling for sleep duration. All models adjusted for sociodemographic characteristics, depressive symptoms and screen time behaviours.

settingNational Longitudinal Study of Adolescent to Adult Health, waves I-IV, USA.

participantsA national probability sample surveyed in adolescence (aged 12-18 years, wave I: 1994-1995, n 13 048 and wave II: 1996, n 9438), emerging adulthood (aged 18-24 years, wave III: 2001-2002, n 9424) and young adulthood (aged 24-34 years, wave IV: 2008, n 10 410).

resultsLater bedtime was associated with shorter sleep duration in all developmental stages, such that a 1-h delay in bedtime was associated with 14-33 fewer minutes of sleep per night (Ps < 0·001). Later bedtime was also associated with lower odds of consuming healthier foods (i.e. fruits, vegetables; range of adjusted OR (AOR), 0·82-0·93, Ps < 0·05) and higher odds of consuming less healthy foods and beverages (i.e. soda, pizza, desserts and sweets; range of AOR, 1·07-1·09, Ps < 0·05). Later bedtime was also associated with more frequent fast-food consumption and higher sugar-sweetened beverage consumption (Ps < 0·05).

conclusionsLater bedtime was associated with shorter sleep duration and less healthy eating behaviours. Bedtime may be a novel behaviour to address in interventions aiming to improve sleep duration and dietary intake.

Indexed as

DietFeeding BehaviorAdolescentAdultCross-Sectional StudiesHumansLongitudinal StudiesSleepYoung AdultBedtimeDietEating behavioursObesitySleep

Identifiers

PMID32772984
PMCPMC7873138

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.