Who is sponsoring NCT03646448?

NCT03646448 is sponsored by University of Luebeck.

What drugs are being tested in NCT03646448?

Interventions in NCT03646448: Motivational Interviewing.

What condition does NCT03646448 study?

NCT03646448 studies Internet Use Disorders.

Is NCT03646448 still recruiting?

NCT03646448 is currently completed. Last updated 18 October 2021.

Last reviewed 2021-10-18 · How we verify

NCT03646448: iPIN

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Intervening in Problematic Internet Use

Completed NA Last updated 18 October 2021

What this trial tests

NA trial testing Motivational Interviewing in Internet Use Disorders in 470 participants. Completed in 31 March 2020.

Timeline

1 October 2017

Primary endpoint
31 March 2020

31 March 2020

Quick facts

Lead sponsor	University of Luebeck
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	single
Primary purpose	treatment
Enrollment	470
Start date	1 October 2017
Primary completion	31 March 2020
Estimated completion	31 March 2020
Sites	1 location across Germany

Drugs / interventions tested

Motivational Interviewing

Conditions studied

Internet Use Disorders — all drugs for Internet Use Disorders →

Sponsor

University of Luebeck

Who can join

16 and older, any sex, with Internet Use Disorders. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The present study examines the efficacy of a brief intervention for problematic Internet use based on Motivational Interviewing (MI) and Cognitive Behavioral Therapy (CBT) in a sample of students screened proactively in vocational schools in Northern Germany. Participants will be randomized in an intervention and a control group. It is hypothesized that after 12 months, participants of the intervention group fulfill less DSM-5 criteria for Internet use disorders, spend less time in the Internet, and suffer from less negative consequences caused by the problematic Internet use, compared to the control group.

Publications & conference data

3 peer-reviewed publications reference this trial (live from Europe PMC):

Motivational brief interventions for adolescents and young adults with Internet use disorders: A randomized-controlled trial.
Schmidt H, Brandt D, Meyer C, Bischof A, et al · · 2022 · cited 6× · PMID 36112487 · DOI 10.1556/2006.2022.00049
Think-aloud analysis of commonly used screening instruments for Internet use disorders: The CIUS, the IGDT-10, and the BSMAS.
Schmidt H, Brandt D, Bischof A, Heidbrink S, et al · · 2022 · cited 3× · PMID 35895610 · DOI 10.1556/2006.2022.00034
Proceedings of the 16th annual conference of INEBRIA.
· 2019 · PMID 31558156 · DOI 10.1186/s13722-019-0157-1

Verify or expand the search:

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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)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT03646448 (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 University of Luebeck
Last refreshed: 18 October 2021

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/NCT03646448.

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