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NCT02954679: ENQUETE-COSYS
French Study on COgnitive Enhancement and Consumption of Psychoactive Substances Among Youth Students
trial testing Online self-administrated and anonymous survey questionnaire in Psychoactive Substances Consumption in 30,000 participants. Completed in 23 July 2019.
23 July 2019
Quick facts
| Lead sponsor | Assistance Publique - Hôpitaux de Paris |
|---|---|
| Status | Completed |
| Study type | OBSERVATIONAL |
| Enrollment | 30,000 |
| Start date | 23 January 2017 |
| Primary completion | 23 July 2019 |
| Estimated completion | 23 July 2019 |
| Sites | 1 location across France |
Drugs / interventions tested
- Online self-administrated and anonymous survey questionnaire
Conditions studied
- Psychoactive Substances Consumption — all drugs for Psychoactive Substances Consumption →
- Substance-related Disorder — all drugs for Substance-related Disorder →
- Off Label-use — all drugs for Off Label-use →
- Cognitive Enhancement — all drugs for Cognitive Enhancement →
Sponsor
Assistance Publique - Hôpitaux de Paris — full company profile →
Who can join
Adults 18 to 25, any sex, with Psychoactive Substances Consumption or Substance-related Disorder. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
This descriptive and declarative study will help to find out consumption rates, all psychoactive substances taken together, among 18-25 year olds. More specifically, it will allow assessment of the extent of the cognitive enhancement phenomenon among students in France (including study of misuse of methylphenidate (MPH) and modafinil in improvement of cognitive performance).
Publications & conference data
1 peer-reviewed publication reference this trial (live from Europe PMC):
-
COgnitive enhancement and consumption of psychoactive Substances among Youth Students (COSYS): a cross-sectional study in France.
Batisse A, Leger S, Vicaut E, Gerbaud L, et al · · 2021 · cited 12× · PMID 33865150 · DOI 10.1016/j.puhe.2021.02.036
Verify or expand the search:
- PubMed search for NCT02954679
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT02954679 (US National Library of Medicine, public domain)
- Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by Assistance Publique - Hôpitaux de Paris
- Last refreshed: 1 September 2020
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT02954679.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing