PainNCT07761208
Turkish Version of the Pictorial Pain Interference Questionnaire
An observational study of Pain and Pain Management, run by Istinye University.
Trial summary
This study aims to culturally adapt the Pictorial Pain Interference Questionnaire into Turkish and evaluate its psychometric properties in individuals with chronic pain. The study will assess the validity and reliability of the Turkish version for evaluating the functional impact of chronic pain on daily life… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Pain, Pain Management
- How many people
- 100 participants
- Where
- No sites listed yet
- Study dates
- 20 Aug 2026to 22 Feb 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Adults aged 18 years and older with chronic pain lasting for at least 3 months
Who may be able to join
- Having chronic pain lasting for at least 3 months.
- Willing to participate in the study and providing informed consent.
- Having sufficient cognitive ability to understand the questions.
Who cannot join
- Severe cognitive impairment (e.g., dementia) or conditions that interfere with communication.
- Inability to cooperate due to a psychiatric disorder.
- Neurological or serious systemic diseases that may affect the assessment.
- Incomplete or incorrectly completed questionnaires.
- Refusal to participate or withdrawal from the study.
About this study
Official title: Assessment of the Functional Impact of Chronic Pain: Psychometric Properties of the Turkish Version of the Pictorial Pain Interference Questionnaire
This study aims to culturally adapt the Pictorial Pain Interference Questionnaire into Turkish and evaluate its psychometric properties in individuals with chronic pain. The study will assess the validity and reliability of the Turkish version for evaluating the functional impact of chronic pain on daily life activities. Reliability will be examined through internal consistency and test-retest reliability, while validity will be assessed by examining the relationships between the questionnaire and established pain-related assessment tools. The study will determine whether the Turkish version provides a valid, reliable, and practical instrument for assessing functional interference associated with chronic pain in Turkish-speaking individuals.
- Conditions
- Pain, Pain Management
- Being tested
- No Interventions
- Keywords
- Chronic Pain, Pain Interference, Pictorial Pain Interference Questionnaire, Psychometric Properties, Turkish Version
- Medical subject headings
- Pain, Agnosia, Chronic Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
No InterventionsOther
This is an observational psychometric validation study. Participants are not assigned to receive any therapeutic intervention; they complete the questionnaires and assessments specified in the study protocol.
What is being measured
The primary outcome is the main question the study is designed to answer.
Internal Consistency of the Turkish Pictorial Pain Interference Questionnaire
Internal consistency will be assessed using Cronbach's alpha coefficient.
Measured: At the first assessment (Baseline)
Test-Retest Reliability of the Turkish Pictorial Pain Interference Questionnaire
Test-retest reliability will be assessed using the Intraclass Correlation Coefficient (ICC) based on assessments performed 7 days apart.
Measured: Baseline and 7 days
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Brief Pain Inventory.
Measured: Baseline
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Pain Disability Index.
Measured: Baseline
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Oswestry Disability Index.
Measured: Baseline
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Short-Form McGill Pain Questionnaire.
Measured: Baseline
Secondary outcomes (1)
Discriminant Validity of the Turkish Pictorial Pain Interference Questionnaire
Discriminant validity will be assessed by examining correlations with concepts expected to have weak associations with pain, including positive affect.
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Aug 2026
- Study start20 Aug 2026 (estimated)
- Primary completion15 Feb 2027 (estimated)
- Study completion22 Feb 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for PainStudies of the same condition, open and under way.
- More trials run by Istinye UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Prospective
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Istinye University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Yunus Emre Tutuneken, Istinye University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07761208
- Sponsor's protocol ID
- 101
- Status last verified
- Aug 2026
- First submitted
- 8 Aug 2026
- Last updated
- 12 Aug 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 12 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Assessment of the Functional Impact of Chronic Pain: Psychometric Properties of the Turkish Version of the Pictorial Pain Interference Questionnaire
- ClinicalTrials.gov ID
- NCT07761208
- Acronym / sponsor ID
- 101
- Conditions
- Pain, Pain Management
- Keywords
- Chronic Pain, Pain Interference, Pictorial Pain Interference Questionnaire, Psychometric Properties, Turkish Version
- Study type
- Observational
- Recruitment status
- Not yet recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Istinye UniversityUniversity, hospital or other
- Study start
- 20 Aug 2026 (estimated)
- Primary completion
- 15 Feb 2027 (estimated)
- Study completion
- 22 Feb 2027 (estimated)
- First posted
- 12 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study aims to culturally adapt the Pictorial Pain Interference Questionnaire into Turkish and evaluate its psychometric properties in individuals with chronic pain. The study will assess the validity and reliability of the Turkish version for evaluating the functional impact of chronic pain on daily life activities. Reliability will be examined through internal consistency and test-retest reliability, while validity will be assessed by examining the relationships between the questionnaire and established pain-related assessment tools. The study will determine whether the Turkish version provides a valid, reliable, and practical instrument for assessing functional interference associated with chronic pain in Turkish-speaking individuals.
Study design
- Observational model
- Other
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Adults aged 18 years and older with chronic pain lasting for at least 3 months
Key inclusion criteria (3 listed)
- Having chronic pain lasting for at least 3 months.
- Willing to participate in the study and providing informed consent.
- Having sufficient cognitive ability to understand the questions.
Key exclusion criteria (5 listed)
- Severe cognitive impairment (e.g., dementia) or conditions that interfere with communication.
- Inability to cooperate due to a psychiatric disorder.
- Neurological or serious systemic diseases that may affect the assessment.
- Incomplete or incorrectly completed questionnaires.
- Refusal to participate or withdrawal from the study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| No InterventionsThis is an observational psychometric validation study. Participants are not assigned to receive any therapeutic intervention; they complete the questionnaires and assessments specified in the study protocol. | Other | – |
Primary outcome
Internal Consistency of the Turkish Pictorial Pain Interference Questionnaire
Time frame: At the first assessment (Baseline)
Internal consistency will be assessed using Cronbach's alpha coefficient.
Test-Retest Reliability of the Turkish Pictorial Pain Interference Questionnaire
Time frame: Baseline and 7 days
Test-retest reliability will be assessed using the Intraclass Correlation Coefficient (ICC) based on assessments performed 7 days apart.
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Time frame: Baseline
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Brief Pain Inventory.
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Time frame: Baseline
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Pain Disability Index.
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Time frame: Baseline
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Oswestry Disability Index.
Construct Validity of the Turkish Pictorial Pain Interference Questionnaire
Time frame: Baseline
Construct validity will be evaluated by examining the correlations between the questionnaire scores and scores from the Short-Form McGill Pain Questionnaire.
1 secondary outcome
Discriminant Validity of the Turkish Pictorial Pain Interference Questionnaire
Time frame: Baseline
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Aug 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Pain and Pain Management, run by Istinye University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 12 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Internal Consistency of the Turkish Pictorial Pain Interference Questionnaire (time frame: At the first assessment (Baseline)). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Aug 2026; AzTrials last refreshed its copy on 6 Nov 2026.