Cannabis use prevalence before and early after partial legalisation in Germany.

Kotz D, Manthey J, Klosterhalfen S, Steinhoff P, Viechtbauer W

DOI: 10.1016/j.drugpo.2026.105501
Published: 2026 Sep 11
Container: The International journal on drug policy
Publisher: Not recorded
Open access: unknown

Credibility signals

limited evidence Score 43/100 under policy 1.0.0. This is a metadata assessment, not a judgment of the paper's conclusions.

Show all credibility signals

cautionDOI registered: No matching Crossref record was present in this response. Source: Crossref; license: CC0 metadata
cautionDOI resolves: No matching Crossref record was present in this response. Source: Crossref; license: CC0 metadata
not scoredDirectory of Open Access Journals: No matching DOAJ record was present in this response. No allow-list match; this is not evidence of low credibility. Source: DOAJ; license: CC0
not scoredMEDLINE indexed: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredOpenAlex core source: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredKnown publisher allow-list: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredROR affiliation: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredRetraction Watch retraction: No retraction notice matched this DOI in the deployed snapshot. No matching event found; coverage may be incomplete. Source: Retraction Watch; license: CC BY 4.0
not scoredRetraction Watch expression of concern: No expression of concern notice matched this DOI in the deployed snapshot. No matching event found; coverage may be incomplete. Source: Retraction Watch; license: CC BY 4.0
not scoredRetraction Watch correction: No correction notice matched this DOI in the deployed snapshot. No matching event found; coverage may be incomplete. Source: Retraction Watch; license: CC BY 4.0
not scoredRetraction Watch reinstatement: No reinstatement notice matched this DOI in the deployed snapshot. No matching event found; coverage may be incomplete. Source: Retraction Watch; license: CC BY 4.0
not scoredOpen access status: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredPublication license: Not checked or no result supplied; no credibility inference made. Source: No authority result supplied; license: Unknown
not scoredPublication version: A publication version was supplied but is not scored. Source: Normalized work metadata; license: Caller-provided; provenance license not supplied to scorer
cautionMetadata completeness: 5 of 6 scored descriptive metadata groups are present; missing fields increase uncertainty. Source: Normalized work metadata; license: Caller-provided; provenance license not supplied to scorer

Cite this work

BibTeX

@article{allodium:10.1016/j.drugpo.2026.105501,
  title = {Cannabis use prevalence before and early after partial legalisation in Germany.},
  author = {Kotz D and Manthey J and Klosterhalfen S and Steinhoff P and Viechtbauer W},
  year = {2026},
  journal = {The International journal on drug policy},
  doi = {10.1016/j.drugpo.2026.105501},
  url = {https://doi.org/10.1016/j.drugpo.2026.105501}
}

RIS

TY  - JOUR
TI  - Cannabis use prevalence before and early after partial legalisation in Germany.
AU  - Kotz D
AU  - Manthey J
AU  - Klosterhalfen S
AU  - Steinhoff P
AU  - Viechtbauer W
PY  - 2026
JO  - The International journal on drug policy
DO  - 10.1016/j.drugpo.2026.105501
UR  - https://doi.org/10.1016/j.drugpo.2026.105501
ER  -

APA

D, K., J, M., S, K., P, S., & W, V. (2026). Cannabis use prevalence before and early after partial legalisation in Germany.. The International journal on drug policy. https://doi.org/10.1016/j.drugpo.2026.105501

Source records

pubmed · retrieved 2026-09-26T09:01:53.306Z