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NCT Number: NCT07761208

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.

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Key information

Conditions

Pain Agnosia Chronic Pain Nervous System Diseases Neurobehavioral Manifestations Neurologic Manifestations Pain Management Pathological Conditions, Signs and Symptoms Perceptual Disorders Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 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.

Exclusion criteria

  • 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.

Treatment and study plan

No interventions

Other

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.

Primary outcomes

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

Secondary outcomes

  1. Discriminant Validity of the Turkish Pictorial Pain Interference Questionnaire

    Time frame: Baseline

    Discriminant validity will be assessed by examining correlations with concepts expected to have weak associations with pain, including positive affect.

Sponsors and collaborators

Lead sponsor

Istinye University

Other

Registry information

Official study title

Assessment of the Functional Impact of Chronic Pain: Psychometric Properties of the Turkish Version of the Pictorial Pain Interference Questionnaire

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Aug 12, 2026
Registry last updated
Aug 12, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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