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CompletedNCT00034905

A Comparison of Seroquel vs. Risperidone in Schizophrenia

This study is completed. It focuses on schizophrenia and currently lists study information in the United States.

SchizophreniaDrugFrom 18 Years to 65 Years

The public registry lists this study as not currently recruiting. This page remains available for information. Check the official record for the latest status and explore other recruiting studies.

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In plain English

Key information made simple

What is this study testing?

This study is testing whether quetiapine fumarate vs risperidone may be useful for adults experiencing schizophrenia.

What would participation involve?

Participants may receive quetiapine fumarate vs risperidone, attend study visits with the research team. The registry lists locations in the United States.

Who is it mainly for?

This study appears to be mainly for adults with schizophrenia.

What should you check before joining?

Ask about the dose, safety monitoring, and possible side effects, whether there is a comparison group, how many visits or travel steps are needed, the exact eligibility criteria.

Your next step

Check the study details

Check the official source, then confirm these points with the research team.

View official study record (opens in a new tab)

  • Recruitment and eligibility

    Is a site open, and who can take part?

  • Visits and time

    Where are visits, can any be remote, and how much time is needed?

  • Costs and support

    What costs, reimbursement or compensation apply?

Before joining

Questions to ask before joining

Study clarity

Things to check before joining

Study start dateJuly 2001
Recruitment status
Completed
Enrollment listed in the registry
Not clearly listed
Sponsor
AstraZeneca
Sponsor type
Unknown or unclear
Study type
Drug
Intervention type
Medication / drug
Study phase
Phase 4Usually happens after approval, to monitor real-world use, safety, and longer-term outcomes.
Locations
United States
Age range
From 18 Years to 65 Years
Official registry ID
NCT00034905
Official title
A Comparison of Seroquel vs. Risperidone in Schizophrenia

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Study ID: NCT00034905. We help you review the study, but cannot decide medical eligibility.

Check recruitment and locations

Recruitment checked against the registry by HopeStage on . Registry information can change. Always confirm availability with the research team.

View official study record (opens in a new tab)

The overall study status can differ from each site's status. Open a country to see its locations and their registry status.

United States · 64 sites
  • Birmingham
    Birmingham, Alabama
    Site status: Not listed — confirm with the team
  • Phoenix
    Phoenix, Arizona
    Site status: Not listed — confirm with the team
  • Anaheim
    Anaheim, California
    Site status: Not listed — confirm with the team
  • Cerritos
    Cerritos, California
    Site status: Not listed — confirm with the team
  • Chula Vista
    Chula Vista, California
    Site status: Not listed — confirm with the team
  • Glendale
    Glendale, California
    Site status: Not listed — confirm with the team
  • Hawthorne
    Hawthorne, California
    Site status: Not listed — confirm with the team
  • Long Beach
    Long Beach, California
    Site status: Not listed — confirm with the team
  • San Diego
    San Diego, California
    Site status: Not listed — confirm with the team
  • Santa Ana
    Santa Ana, California
    Site status: Not listed — confirm with the team
  • Torrance
    Torrance, California
    Site status: Not listed — confirm with the team
  • Farmington
    Farmington, Connecticut
    Site status: Not listed — confirm with the team
  • New Haven
    New Haven, Connecticut
    Site status: Not listed — confirm with the team
  • Washington D.C.
    Washington D.C., District of Columbia
    Site status: Not listed — confirm with the team
  • Miami
    Miami, Florida
    Site status: Not listed — confirm with the team
  • Miami Beach
    Miami Beach, Florida
    Site status: Not listed — confirm with the team
  • North Miami
    North Miami, Florida
    Site status: Not listed — confirm with the team
  • Winter Park
    Winter Park, Florida
    Site status: Not listed — confirm with the team
  • Atlanta
    Atlanta, Georgia
    Site status: Not listed — confirm with the team
  • Hoffman Estates
    Hoffman Estates, Illinois
    Site status: Not listed — confirm with the team
  • Prairie Village
    Prairie Village, Kansas
    Site status: Not listed — confirm with the team
  • Wichita
    Wichita, Kansas
    Site status: Not listed — confirm with the team
  • New Orleans
    New Orleans, Louisiana
    Site status: Not listed — confirm with the team
  • Shreveport
    Shreveport, Louisiana
    Site status: Not listed — confirm with the team
  • Baltimore
    Baltimore, Maryland
    Site status: Not listed — confirm with the team
  • Boston
    Boston, Massachusetts
    Site status: Not listed — confirm with the team
  • Worcester
    Worcester, Massachusetts
    Site status: Not listed — confirm with the team
  • Ann Arbor
    Ann Arbor, Michigan
    Site status: Not listed — confirm with the team
  • New Baltimore
    New Baltimore, Michigan
    Site status: Not listed — confirm with the team
  • Kansas City
    Kansas City, Missouri
    Site status: Not listed — confirm with the team
  • St Louis
    St Louis, Missouri
    Site status: Not listed — confirm with the team
  • Reno
    Reno, Nevada
    Site status: Not listed — confirm with the team
  • Clementon
    Clementon, New Jersey
    Site status: Not listed — confirm with the team
  • Lyons
    Lyons, New Jersey
    Site status: Not listed — confirm with the team
  • Summit
    Summit, New Jersey
    Site status: Not listed — confirm with the team
  • Albuquerque
    Albuquerque, New Mexico
    Site status: Not listed — confirm with the team
  • Holliswood
    Holliswood, New York
    Site status: Not listed — confirm with the team
  • Montrose
    Montrose, New York
    Site status: Not listed — confirm with the team
  • New York
    New York, New York
    Site status: Not listed — confirm with the team
  • Oceanside
    Oceanside, New York
    Site status: Not listed — confirm with the team
  • The Bronx
    The Bronx, New York
    Site status: Not listed — confirm with the team
  • White Plains
    White Plains, New York
    Site status: Not listed — confirm with the team
  • Butner
    Butner, North Carolina
    Site status: Not listed — confirm with the team
  • Beachwood
    Beachwood, Ohio
    Site status: Not listed — confirm with the team
  • Chagrin Falls
    Chagrin Falls, Ohio
    Site status: Not listed — confirm with the team
  • Cincinnati
    Cincinnati, Ohio
    Site status: Not listed — confirm with the team
  • Columbus
    Columbus, Ohio
    Site status: Not listed — confirm with the team
  • Oklahoma City
    Oklahoma City, Oklahoma
    Site status: Not listed — confirm with the team
  • Media
    Media, Pennsylvania
    Site status: Not listed — confirm with the team
  • Pittsburgh
    Pittsburgh, Pennsylvania
    Site status: Not listed — confirm with the team
  • Memphis
    Memphis, Tennessee
    Site status: Not listed — confirm with the team
  • Nashville
    Nashville, Tennessee
    Site status: Not listed — confirm with the team
  • Austin
    Austin, Texas
    Site status: Not listed — confirm with the team
  • Houston
    Houston, Texas
    Site status: Not listed — confirm with the team
  • Terrell
    Terrell, Texas
    Site status: Not listed — confirm with the team
  • Waco
    Waco, Texas
    Site status: Not listed — confirm with the team
  • Salt Lake City
    Salt Lake City, Utah
    Site status: Not listed — confirm with the team
  • Falls Church
    Falls Church, Virginia
    Site status: Not listed — confirm with the team
  • Richmond
    Richmond, Virginia
    Site status: Not listed — confirm with the team
  • Virginia Beach
    Virginia Beach, Virginia
    Site status: Not listed — confirm with the team
  • Kirkland
    Kirkland, Washington
    Site status: Not listed — confirm with the team
  • Tacoma
    Tacoma, Washington
    Site status: Not listed — confirm with the team
  • Vancouver
    Vancouver, Washington
    Site status: Not listed — confirm with the team
  • West Allis
    West Allis, Wisconsin
    Site status: Not listed — confirm with the team
In practice

For you

Participation may contribute to research. Personal benefit is not guaranteed.

Ask the research team to explain the activities, time commitment, and follow-up involved.

Study sites are listed. Confirm the relevant site and any travel before making plans.

Important

Not medical advice

Information from public sources. Are you the study sponsor? Contact us to update this page: hi@hopestage.com

FAQ

Questions about this study

What is this study trying to understand?

This study is exploring medication or study treatment for people with schizophrenia. Participants may complete study visits, assessments, or follow-up activities defined by the research team. Direct benefit is not guaranteed. The detailed objective is not always clearly listed in the public registry; the study team can confirm.

Does this study involve a medication?

This appears to be a medication / drug study involving quetiapine fumarate vs risperidone. Phase 4 studies usually happen after treatment approval, to monitor real-world use.

Who might this study be for?

This study may concern people with schizophrenia; age range: From 18 Years to 65 Years. The criteria appear fairly broad, but you should not assume you are eligible. The study team must confirm diagnosis, age, exclusions, available locations, and next steps.

What would I likely need to do?

You may need to take a study treatment and have regular medical follow-up. The listed study locations suggest that at least part of participation may involve a physical site. Ask whether some steps can be done remotely.

What side effects, interactions, or treatment changes should I check?

If the study involves a medication, ask whether it is already approved, experimental, or being tested for a new use. Check possible side effects, interactions with current treatment, dose changes, monitoring, and what happens if you feel worse. For any mental health study, also ask who to contact if you feel worse, whether participation may affect current treatment, whether you can stop, and who confirms eligibility.

Will I need to travel or attend in-person visits?

The listed study locations suggest that at least part of participation may involve a physical site. Ask which sites are open, how many visits are expected, whether any steps can be done remotely, and whether travel costs or compensation are listed.

Who is behind this study?

This study is sponsored by AstraZeneca, which appears to be unknown or unclear. If available, it can be useful to check the sponsor website, collaborators, investigator affiliation, and the official registry before deciding. HopeStage does not judge the quality of a sponsor or researcher, but helps you identify what to verify.

Can I still join this study?

The public registry lists this study as not currently recruiting. This page remains available for information. Check the official record for the latest status and explore other recruiting studies.

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