Completed PHASE4 INTERVENTIONAL 2-arm NCT00599807

Zurich Multiple Endpoint Vitamin D Trial in Knee OA Patients

Role of Vitamin D in Secondary Prevention of Knee Osteoarthritis: A Double-blind Randomized Controlled Trial

Sponsor: Boston University

Interventions Vitamin D3 (cholecalciferol)

Updated 6 times since 2017 Last updated: Oct 27, 2014 Started: Jan 31, 2008 Primary completion: Mar 31, 2014 Completion: Mar 31, 2014

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT00599807, this PHASE4 trial focuses on Knee Osteoarthritis and remains completed. Sponsored by Boston University, it has been updated 6 times since 2008, reflecting limited change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Status Flow

Change History

6 versions recorded

Sep 2024 — Present [monthly]

Completed PHASE4
Jul 2024 — Sep 2024 [monthly]

Completed PHASE4
Jan 2022 — Jul 2024 [monthly]

Completed PHASE4
Jan 2021 — Jan 2022 [monthly]

Completed PHASE4
Jun 2018 — Jan 2021 [monthly]

Completed PHASE4

▶ Show 1 earlier version

Jan 2017 — Jun 2018 [monthly]

Completed PHASE4

First recorded

Jan 2008

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Boston University
Harvard School of Public Health (HSPH)
Tufts University
University of Zurich

Data source: University of Zurich

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

Study Locations

• Zurich, Switzerland