Predictors of cannabis use: A retrospective cohort study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00014307

Enrollment

5000

Registered

2018-03-21

Start date

2018-03-02

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

F12.XX F12 F12.0 F12.1 F12.3 F12.4 F12.5 F12.6 F12.7 F12.8 F12.9

Interventions

Group 1: This public nationwide online survey examines the following questions: What are natural trajectories of cannabis use? Which effects have preventive measures and legal proceedings on cannabis

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: age

Exclusion criteria

Exclusion criteria: age <18 years

Design outcomes

Primary

Measure	Time frame
The primary outcome of this public nationwide study about cannabis use is measured by online questionnaire completion; one-time participation, duration: 15 min.	—

Countries

Germany

Contacts

Public ContactAnn-Kathrin Seidel

IFT-Nord gGmbH Institut für Therapie- und Gesundheitsforschung

seidel@ift-nord.de+49 (0) 431 - 570 29 39

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026