What does recruiting mean?

Recruiting means the study is currently enrolling participants. Not yet recruiting means it has been registered but has not started enrolling. Enrolling by invitation means participants are selected by the study team rather than through open enrollment.

How do I join a clinical trial?

Read the full eligibility criteria and contact information on ClinicalTrials.gov, then talk with your doctor about whether a study may be right for you. The study team decides who can enroll.

Checked Oct 26, 2026

Sequential and Comparative Evaluation of Pain Treatment Effectiveness Response

NCT04142177 on ClinicalTrials.gov

Study listings come from ClinicalTrials.gov, where sponsors register and update their own studies. A listing does not mean a study is safe or effective, and DatenUS does not recommend any study. Talk with your doctor before joining a clinical trial, and use ClinicalTrials.gov for contact details and full eligibility rules.

Status: Recruiting
Phase: Interventional
Planned enrollment: 2,529; Participants, all sites
U.S. sites: 19; In 15 states

Study details

Conditions: Chronic Low Back Pain
Sponsor: VA Office of Research and Development (Other federal agency)
Ages: 18 years and older
Sex: All
Healthy volunteers: Not accepted
Start: 06/13/2022
Primary completion (expected): 06/30/2027
Last updated by sponsor: 05/04/2026

Full eligibility rules, contacts and site names: NCT04142177 on ClinicalTrials.gov

Where the study has sites

Cities with at least one listed U.S. site. Some sites may not be enrolling yet.

Arizona: Phoenix
California: Loma Linda, Long Beach, Palo Alto
Colorado: Aurora
Florida: Bay Pines, Orlando
Georgia: Decatur
Indiana: Indianapolis
Maryland: Baltimore
Massachusetts: Boston
Missouri: St Louis
Nevada: North Las Vegas
North Carolina: Asheville
Oregon: Portland
Texas: San Antonio
Utah: Salt Lake City
Virginia: Hampton, Richmond

Frequently asked questions

What does recruiting mean?: Recruiting means the study is currently enrolling participants. Not yet recruiting means it has been registered but has not started enrolling. Enrolling by invitation means participants are selected by the study team rather than through open enrollment.
How do I join a clinical trial?: Read the full eligibility criteria and contact information on ClinicalTrials.gov, then talk with your doctor about whether a study may be right for you. The study team decides who can enroll.

Source: ClinicalTrials.gov, National Library of Medicine · Last updated 05/04/2026

Data sources

ClinicalTrials.gov APINational Library of Medicine

Data as of 05/04/2026

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