Vietnamese Pain Self-Efficacy Questionnaire for people with knee osteoarthritis.

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Researchers will recruit 173 patients aged 50 and older with diagnosed knee osteoarthritis at Gia Dinh People's Hospital and have them complete the Vietnamese PSEQ along with the EQ-5D-5L and other health questionnaires in an in-person interview. Internal consistency will be estimated using Cronbach's alpha and a subgroup will repeat the questionnaire after 72 hours to measure test-retest reliability. Convergent validity will be examined by correlating VIET-PSEQ scores with the EQ-5D-5L utility index, and linear regression will explore relationships with age, sex, pain severity, and education level. The study uses convenient sampling and excludes people with recent acute flares or severe psychiatric disorders.

Why it matters

Who can join: the full rules

Inclusion Criteria:

Participants will be eligible for inclusion if they meet all of the following conditions:

* Age ≥ 50 years.
* Diagnosis of knee osteoarthritis (OA) according to the criteria of the American College of Rheumatology (ACR), confirmed by:

  1. application of ACR criteria by the investigator at the time of enrollment; or
  2. a prior diagnosis documented in medical records by a rheumatologist or musculoskeletal specialist.
* Presence of chronic pain related to knee OA, with current pain intensity ≥ 1 on the Visual Analog Scale (VAS).
* No acute flare of knee pain within the past 2 weeks.
* Ability to perform activities of daily living (with or without assistance).
* Ability to read, understand, and complete questionnaires in Vietnamese.
* Willingness to participate and provide informed consent.

Exclusion Criteria:

Participants will be excluded if they meet any of the following conditions:

* Diagnosis of severe psychiatric disorders (e.g., schizophrenia, severe anxiety disorders).
* Presence of cognitive impairment that interferes with the ability to comprehend or answer the questionnaire.
* Diagnosed with systemic inflammatory diseases such as rheumatoid arthritis, systemic lupus erythematosus, or gout.
* Presence of other chronic pain conditions (unrelated to knee OA) that are predominant and significantly affect mobility and daily functioning.
* History of intra-articular injection or knee surgery within the past 3 months.
* Questionnaire (PSEQ) with ≥ 20% of items missing or invalid.

Where it's running

• Gia Dinh People's Hospital
  Ho Chi Minh City, Ho Chi Minh, Vietnam Recruiting

Study contacts

• Study coordinator: Khai Q Nguyen, MD, MSc
• Email: khainq@bvndgiadinh.org.vn
• Phone: +84 704674558

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Other studies for the same condition or treatment. Recruiting studies are listed first.

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.