Trial reportSleep2017
Sleep Perception and Misperception in Chronic Cocaine Users During Abstinence.
Trial report in Sleep, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled 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.
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
10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 19 citations in OpenAlex.
- The wake of addiction: Pharmacological strategies for sleep disturbances in stimulant use disorders, a systematic review.Drug and alcohol dependence · 2026Pooled it
- Objective and subjective measurement of sleep in people who use substances: Emerging evidence and recommendations from a systematic review.Journal of sleep research · 2025Pooled it
- Sleep time differs among people who co-use cocaine and cannabis compared to people who only use cocaine.Pharmacology, biochemistry, and behavior · 2021Trial
- Metabotropic glutamate receptor function and regulation of sleep-wake cycles.International review of neurobiology · 2023Article
- Discordant Subjective Perception of Sleep in Patients with Obstructive Sleep Apnea and Insomnia: A Retrospective Study.Medical science monitor : international medical journal of experimental and clinical research · 2022Article
- Interaction between cocaine use and sleep behavior: A comprehensive review of cocaine's disrupting influence on sleep behavior and sleep disruptions influence on reward seeking.Pharmacology, biochemistry, and behavior · 2021Review
- Sleep quality improves during treatment with repetitive transcranial magnetic stimulation (rTMS) in patients with cocaine use disorder: a retrospective observational study.BMC psychiatry · 2020Observational
- Multimodal assessment of sleep in men and women during treatment for opioid use disorder.Drug and alcohol dependence · 2020Article
- Differential Effects of Addictive Drugs on Sleep and Sleep Stages.Journal of addiction research (OPAST Group) · 2019Article
- Sleep Disorder in Drug Addiction: Treatment With Transcranial Magnetic Stimulation.Frontiers in psychiatry · 2019Article
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 at 1 institution in 1 country.
Funding
Abstract
Study Objectives: During abstinence, chronic cocaine users experience an objective worsening of sleep that is perceived as qualitatively improving. This phenomenon has been termed "occult insomnia." The objective of this study was to determine whether chronic cocaine users experience positive sleep state misperception during abstinence. Methods: Forty-three cocaine-dependent persons were admitted to an inpatient research facility for 12 days and 11 nights to participate in a treatment study of modafinil. Polysomnographic sleep recordings were performed on study nights 3, 4, 10, and 11, when participants were on average 1 and 2 weeks abstinent from cocaine. Participants also completed sleep diary questionnaires every evening before bed and every morning upon awakening. Polysomnographic and sleep diary measurements of total sleep time, sleep latency, time awake after sleep onset, and time in bed after final awakening were compared. Results: Chronic cocaine users accurately reported total sleep time after 1 week of abstinence but overreported total sleep time by an average of 40 min after 2 weeks of abstinence. Underestimating sleep latency and time spent awake after sleep onset were responsible for this difference. Conclusions: Positive sleep state misperception is revealed in chronic cocaine users after 2 weeks of abstinence and is consistent with the previously identified "occult insomnia" in this population.
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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.