Common Data Elements (CDEs) Repository

The NIH HEAL Initiative’s Common Data Elements (CDEs) program aims to harmonize the data collected by the initiative’s studies, enhancing the comparability of various data sets generated by HEAL research.  

HEAL researchers and potential applicants conducting research with human participants should also prioritize using the HEAL CDEs. Researchers outside the HEAL Initiative conducting pain research may also be interested in using validated and structured questionnaires.

The “core” questionnaires in ten domains, demographic information, and opioid usage are required for the clinical pain HEAL grants and are organized depending on the type of pain and population being studied.

Most HEAL pain studies would fall into one of several categories that would determine their core questionnaires: adult acute pain, adult chronic pain, or pediatric pain (both acute and chronic pain). These categories are listed in the “core or supplemental” column.

The “Advanced Search” function can filter the questionnaires by the specific type of pain research being conducted (acute vs. chronic), the patient population (adult vs. pediatric), and the domain (research topic) of the questionnaires.

For core questionnaires with multiple versions listed (e.g., GAD-2, GAD-7), studies can use any one of these versions, but at a minimum must use the shortest version listed.

The text box allows users to search for a specific questionnaire or research topic area.

Files can be downloaded directly from the links in the second column. Filenames that include the suffix “CRF” are questionnaires (case-report forms) and filenames with the suffix “CDE” are the CDE files with variable names and coding information.

To download more than one file at a time, use the checkboxes on the left hand side to select the files you would like to download. After you click the "Download Selected Files" button, you will get a message at the top of the page saying, "Export file created, Click here to download." This will download a zipped folder with your selections.

“Download list” allows users to download the list of questionnaires that are displayed as search results.

For questionnaires that are copyrighted and require a license for use, the files linked below contain instructions on how to properly obtain a license for use.

If you have any questions, please contact [email protected].

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Description File Name File Language Core or Supplemental Research Topic
The Life Orientation Test Revised (LOT R) is a psychological instrument that assesses one's dispositional level of optimism. English
  • Supplemental
 Protective Factors
The Multidimensional Assessment of Fatigue Scale (MAF) is an assessment tool to measure fatigue and intervention effectiveness. English
  • Supplemental
 Fatigue
The Multidimensional Assessment of Interoceptive Awareness Version 2 (MAIA-2) is an 8-subscale state-trait self-report questionnaire to measure multiple dimensions of interoception. The MAIA-2 is suitable for adults (18+) and has 37 items. English
  • Supplemental
 Pain Symptom and Assessment
The Medication Adherence Rating Scale (MARS) is a 10-item self-report measure of medication adherence in psychosis. English
  • Supplemental
 Medication
The Medication Adherence Rating Scale 5 (MARS 5) is a 5-item self-report measure of medication adherence in psychosis. English
  • Supplemental
 Medication
The Michigan Body Map (MBM) is a self-report measure to assess body areas where chronic pain is experienced and to specifically quantify the degree of widespread body pain when assessing for centralized pain features. English
  • Supplemental
 Body Maps
The Michigan Body Map (MBM) is a self-report measure to assess body areas where chronic pain is experienced and to specifically quantify the degree of widespread body pain when assessing for centralized pain features. Spanish
  • Supplemental
 Body Maps
The Microbiome Study Bristol Stool Chart classifies feces into seven groups. It is used in both clinical and experimental fields. English
  • Supplemental
 Microbiome
The Migraine Disability Assessment (MIDAS) questionnaire assesses headache-related disability with the aim of improving migraine care. English
  • Supplemental
 Headache/Migraine
The Mini-International Neuropsychiatric Interview Substance Use Disorder Scale was designed as a brief structured diagnostic interview for substance use disorders. English
  • Supplemental
 Substance Use
The Mini International Neuropsychiatric Interview (Mini Cog) tool identifies people who might have clinically important, but unrecognized, cognitive impairment. English
  • Supplemental
 Memory
The Multidimensional Inventory of Subjective Cognitive Impairment (MISCI) measure of cognitive dysfunction in subjects who suffer from fibromyalgia. English
  • Supplemental
 Cognitive Function
The Multidimensional Inventory of Subjective Cognitive Impairment (MISCI) measure of cognitive dysfunction in subjects who suffer from fibromyalgia. Spanish
  • Supplemental
 Cognitive Function
The Mobile Application Rating Scale (MARS) evaluates the quality of mobile health applications. English
  • Supplemental
 Satisfaction
The Medical Outcomes Study Sleep Scale measures 6 factors: sleep initiation, maintenance, respiratory problems, quantity, perceived adequacy, and somnolence. English
  • Supplemental
 Sleep