deltatrials
Completed NA INTERVENTIONAL 2-arm NCT03856593

Encouraging Judicious Prescribing of Opioids in Los Angeles County

Comparative Effectiveness of Two Letters to Encourage Judicious Prescribing of Opioids: A County-wide Project in Los Angeles

Sponsor: National Institute on Aging (NIA)

Updated 10 times since 2019 Last updated: Mar 27, 2023 Started: Apr 5, 2019 Primary completion: Aug 8, 2021 Completion: Aug 8, 2021
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This NA trial investigates Substance-Related Disorders and is currently completed. National Institute on Aging (NIA) leads this study, which shows 10 recorded versions since 2019 — indicating substantial longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

~Mar 2019 – ~Aug 2019 · 5 months · monthly snapshotNot Yet Recruiting~Aug 2019 – ~Oct 2020 · 14 months · monthly snapshotEnrolling By Invitation~Oct 2020 – ~Nov 2020 · 31 days · monthly snapshotActive Not Recruiting~Nov 2020 – ~Jan 2021 · 2 months · monthly snapshotActive Not Recruiting~Jan 2021 – ~Mar 2021 · 59 days · monthly snapshotActive Not Recruiting~Mar 2021 – ~May 2022 · 14 months · monthly snapshotActive Not Recruiting~May 2022 – ~Apr 2023 · 11 months · monthly snapshotCompleted~Apr 2023 – ~Jul 2024 · 15 months · monthly snapshotCompleted~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshotCompleted~Sep 2024 – present · 22 months · monthly snapshotCompleted

Change History

10 versions recorded
  1. Sep 2024 — Present [monthly]

    Completed NA

  2. Jul 2024 — Sep 2024 [monthly]

    Completed NA

  3. Apr 2023 — Jul 2024 [monthly]

    Completed NA

  4. May 2022 — Apr 2023 [monthly]

    Completed NA

    Status: Active Not RecruitingCompleted

  5. Mar 2021 — May 2022 [monthly]

    Active Not Recruiting NA

Show 5 earlier versions
  1. Jan 2021 — Mar 2021 [monthly]

    Active Not Recruiting NA

  2. Nov 2020 — Jan 2021 [monthly]

    Active Not Recruiting NA

  3. Oct 2020 — Nov 2020 [monthly]

    Active Not Recruiting NA

    Status: Enrolling By InvitationActive Not Recruiting

  4. Aug 2019 — Oct 2020 [monthly]

    Enrolling By Invitation NA

    Status: Not Yet RecruitingEnrolling By Invitation

  5. Mar 2019 — Aug 2019 [monthly]

    Not Yet Recruiting NA

    First recorded

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • National Institute on Aging (NIA)
  • University of Southern California
Data source: University of Southern California

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations