ReviewJAR life2025
Regular caffeine consumption & subjective sleep quality: A systematic review.
Review in JAR life, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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.
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.
Who cites it
2 citing papers in PubMed.
- Psychobiological Correlates of Perceived Physical Activity Barriers: Insomnia, Chronotype, and Caffeine Consumption.International journal of environmental research and public health · 2026Article
- Association Between Coffee Consumption and Academic Performance Among Second-Year Medical Students.Cureus · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Caffeine, the world's most consumed stimulant, is commonly used to combat fatigue, This review examined the unclear relationship between long-term caffeine consumption and subjective sleep quality, defined as satisfaction with sleep based on personal perception. Screening 6,908 studies, 10 were included. Results showed limited statistically significant associations, hindered by variability in study quality, data, and assessment methods. Influencing factors such as individual differences and study heterogeneity were identified. The review highlights the need for standardized tools and methodologies, urging future research to explore genetic, cultural, and timing factors to better understand caffeine's impact on sleep quality.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.