# Association of Cannabis Use Disorder Versus Other Substance Use Disorders With Psychiatric Conditions: A Propensity-Matched Retrospective Cohort Analysis

> **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637)
> **Publisher:** CED Clinic (https://cedclinic.com)
> **Canonical URL:** https://cedclinic.com/research/cannabis-for-marijuana-abuse-cohort-study/
> **Published:** 2026-10-26T11:14:16-04:00 | **Last Modified / Clinically Audited:** 2026-10-26T11:14:17-04:00
> **Clinical Summary:** Researchers looked at health records of people diagnosed with a problem related to using cannabis.

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Source document is a MedicalResearch.com blog interview with lead author Ryan C. Nicholson, MD MPH, summarizing the study. Full abstract not provided in the supplied text. The blog reports a propensity-matched retrospective cohort analysis comparing psychiatric outcomes in patients with cannabis use disorder versus other substance use disorders, using TriNetX electronic health record data.

 

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### Verification & Medical Governance

- **Lead Clinical Author:** Benjamin Caplan, MD
- **Credentials:** Board Certified in Family Medicine (ABFM), Founder & CMO CED Clinic & CED Foundation, Author of *The Doctor-Approved Cannabis Handbook* (Penguin Random House).
- **Clinical Scale:** 350,000+ lifetime evaluations overseen; 81,008-patient Real-World Evidence Registry (`~/.ced_rwe_vault.db`); 125,000+ peer-reviewed study literature observatory (`http://localhost:8768/api/explorer/terminal`).
- **License Verification:** Commonwealth of Massachusetts License #240562 (https://checkahealthlicense.mass.gov/).
- **NPI Registry:** 1962722637 (https://npiregistry.cms.hhs.gov/provider-view/1962722637).
- **Ethics & Data Privacy:** Clinical registry observations adhere strictly to HIPAA Safe Harbor de-identification (45 CFR § 164.514(b)) and criteria for secondary research exemption under 45 CFR § 46.104(d)(4).