Turkish Adaptation Study of the Generic Functional Index

Istanbul Bilgi University

Status: Enrolling

Conditions: Musculoskeletal Diseases

Treatments: Other: Internal consistency and Reliability; Other: Validity; Other: Translating the Generic Functional Index into Turkish and Related Processes

Study type: Observational

Funder types: Other

Identifiers

NCT07004478

IstanbulBUFC9

Details and patient eligibility

About

The Generic Functional Index is a scale developed to assess the general functional status of individuals. This study aims to evaluate the validity and reliability of the Turkish version of the Generic Functional Index. The adaptation process was designed to follow a standardized translation protocol, including forward translation, expert committee review, back-translation, pilot testing, and psychometric analyses. Data will be collected from individuals with musculoskeletal problems. Psychometric testing will include test-retest reliability, internal consistency, and construct validity analyses.

The main hypotheses of this study are as follows:

1. The Turkish version of the Generic Functional Index will demonstrate high test-retest reliability when administered to individuals with musculoskeletal disorders.
2. The scores of the Turkish version of the Generic Functional Index will show a significant positive correlation with the scores of the Functional Independence Measure in individuals with musculoskeletal disorders.

Full description

Functional assessment is a fundamental component in evaluating the impact of health conditions on individuals' daily lives and in guiding rehabilitation strategies. The Generic Functional Index is a multidimensional instrument developed to assess overall functional status by capturing the effects of a person's problem on their daily activities, mobility, pain, and self-care performance. There is currently no validated Turkish version of the Generic Functional Index available for use in musculoskeletal populations.

This study aims to translate and culturally adapt the Generic Functional Index into Turkish and to investigate its psychometric properties in individuals with musculoskeletal disorders. The adaptation will follow an internationally recognized translation methodology, including forward translation, synthesis, back-translation, expert committee review, and pre-testing. Psychometric evaluation will involve data collection from individuals with musculoskeletal conditions, with analyses focusing on internal consistency, test-retest reliability, and construct validity.

Construct validity will be examined by analyzing the relationship between the Turkish Generic Functional Index and the Functional Independence Measure, which is a widely used tool for assessing independence in daily living activities. A strong correlation between these tools will support the convergent validity of the Turkish Generic Functional Index.

This study is significant because a valid and reliable Turkish version of the Generic Functional Index will provide clinicians and researchers with a standardized tool for evaluating functional limitations in Turkish-speaking populations with musculoskeletal disorders. It will also contribute to the international applicability of the Generic Functional Indexby expanding its use to different cultural and linguistic contexts.

Enrollment: 200 estimated patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Being 18 years of age or older,
• Turkish literacy,
• Cognitive competence,
• Having a musculoskeletal disorder

Exclusion criteria

• Those with acute functional impairment
• Those with cognitive impairment, or
• Those with a mental or physical condition that would prevent them from understanding the scale.

Trial design

200 participants in 1 patient group

Participants with musculoskeletal conditions

Description:

The sample will include adult individuals presenting with various musculoskeletal disorders, including but not limited to low back pain, osteoarthritis, tendinopathies, or other soft tissue conditions, which may influence their functional status.

Treatment:

Other: Translating the Generic Functional Index into Turkish and Related Processes

Other: Validity

Other: Internal consistency and Reliability