This study aims to evaluate the reliability and convergent validity of the Vietnamese version of the Pain Self-Efficacy Questionnaire (VIET-PSEQ) in patients with knee osteoarthritis (KOA). Pain self-efficacy refers to a person's confidence in managing their pain and maintaining daily activities despite it.
A total of 173 patients with KOA will be recruited at Gia Dinh People's Hospital using a convenient sampling method. Eligible participants are 50 years or older, diagnosed with KOA, and experiencing chronic knee pain. They will complete the VIET-PSEQ and other health-related questionnaires during an in-person interview.
The study will assess internal consistency (using Cronbach's alpha), test-retest reliability (by re-assessing a subgroup after 72 hours), and convergent validity by correlating VIET-PSEQ scores with EQ-5D-5L utility index. Additionally, linear regression analysis will examine how age, sex, pain severity, and education level influence pain self-efficacy.
The goal is to determine whether VIET-PSEQ is a reliable and valid tool for measuring pain self-efficacy in Vietnamese patients with KOA.
Age ≥ 50 years.
application of ACR criteria by the investigator at the time of enrollment; or
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).
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.
Khai Quang Nguyen, MD
Lead sponsor
Gia Dinh People Hospital
Sponsor institution