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Pain Quality Study

This study has been completed.
Merck Sharp & Dohme Corp.
Information provided by (Responsible Party):
Mark Jensen, University of Washington Identifier:
First received: March 21, 2011
Last updated: May 9, 2014
Last verified: May 2014

One way to better understand how various treatments for pain differ is to determine the effects of these treatments on different pain qualities or characteristics. For example, pain can be described as "hot", "electrical", "cold", "achy", and "piercing." In order to determine which pain quality/qualities that a pain treatment affects, researchers must develop measures of these pain qualities or characteristics. The purpose of this study is to learn more about the different pain qualities individuals who have low back pain, headaches and fibromyalgia experience. Identifying the common qualities of pain experienced by these groups will help researchers evaluate and develop more comprehensive pain quality measures, which will ultimately help them to be able to test the effectiveness of treatments for these different pain qualities.

Low Back Pain

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Cross-Sectional
Official Title: Pain Quality in Individuals With Low Back Pain, Headache, and Fibromyalgia

Resource links provided by NLM:

Further study details as provided by University of Washington:

Enrollment: 307
Study Start Date: June 2011
Study Completion Date: April 2013
Primary Completion Date: November 2012 (Final data collection date for primary outcome measure)
Low Back Pain
Individuals who experience bothersome low back pain.
Individuals who experience bothersome headaches.
Individuals who experience bothersome fibromyalgia-related pain.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

Individuals who have a formal diagnosis of one of the three conditions studied and have received services at either or both the Harborview Medical Center and the University of Washington Medical Center.


Inclusion Criteria:

  • Speaks and understands English;
  • At least 18 years of age;
  • Confirms a diagnosis from a physician or certified medical provider of one of the three medical conditions (low back pain, headache, fibromyalgia), and that pain related to this diagnosis is still bothersome.
  • Has experienced bothersome pain associated with their diagnosis in the past three months of a sufficient intensity;
  • English is their first and primary language.

Exclusion Criteria:

  • Individuals would be excluded if they have more than one of the three pain diagnoses to be studied.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01321190

United States, Washington
University of Washington
Seattle, Washington, United States, 98104
Sponsors and Collaborators
University of Washington
Merck Sharp & Dohme Corp.
Principal Investigator: Mark P Jensen, PhD University of Washington
  More Information

Responsible Party: Mark Jensen, Principal Investigator, University of Washington Identifier: NCT01321190     History of Changes
Other Study ID Numbers: 40324-EA
Study First Received: March 21, 2011
Last Updated: May 9, 2014
Health Authority: United States: Institutional Review Board

Additional relevant MeSH terms:
Low Back Pain
Back Pain
Muscular Diseases
Musculoskeletal Diseases
Nervous System Diseases
Neurologic Manifestations
Neuromuscular Diseases
Rheumatic Diseases
Signs and Symptoms processed this record on March 03, 2015