Turkish Adaptation Study of the Generic Functional Index

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 to 65 years
• All sexes
• Healthy volunteers accepted
• Adult, Older adult

Study population: Participants with musculoskeletal conditions

Trial locations and contacts

1 site in 1 country.

About this study

Official title: Turkish Adaptation, Validity and Reliability Study of the Generic Functional Index

Conditions

Musculoskeletal Diseases

Being tested

Translating the Generic Functional Index into Turkish and Related Processes, Validity, Internal consistency and Reliability

Keywords

function, musculoskeletal, reliability, validity, Generic Functional Index

Medical subject headings

Musculoskeletal Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

• Translating the Generic Functional Index into Turkish and Related ProcessesOther

  The translation process will follow a specific protocol in accordance with the guidelines. It will include two independent forward translations and one back-translation, conducted after obtaining written permission from the original authors. Discrepancies between translations will be reviewed by an expert committee to resolve terminological and cultural differences. The process will ensure conceptual and cultural equivalence between the original English version and the Turkish version. The final version of the questionnaire will be adapted to the target population and finalized in consultation with the original authors.

• ValidityOther

  Content validity will be calculated with the Content Validity Index, which is a result of expert opinions in terms of clarity, difficulty, and suitability of the Turkish version of the Generic Functional Index.

• Internal consistency and ReliabilityOther

  The internal consistency of the items will be tested with Cronbach alpha. Test-retest reliability will be tested with intraclass correlation coefficient.

What is being measured

The primary outcome is the main question the study is designed to answer.

1. The Turkish Version of Generic Functional Index

   This index is designed for use across a wide range of musculoskeletal and functional conditions and comprises four parts:

   Part 1 - Global Status: Patients rate their overall post-injury status on a 0-10 scale, multiplied by 10 to yield a percentage (range: 0-100).

   Part 2 - Duties and Pain: Assesses functional duties and pain level, each on a 0-10 scale converted to percentages (range: 0-100 each).

   Part 3 - Functional Limitations: A 10-item checklist (mobility, dressing, sleep, etc.), with full or half points; total score (0-10) is multiplied by 10 for a 100-point scale.

   Part 4 - Patient-Specific Index: Patients rate up to 5 activities on a 0-10 scale (0 = worst, 10 = best); total is doubled to yield a percentage (range: 0-100).

   Lower scores indicate greater disability; higher scores reflect better function.

   Measured: T0 and T1 (Baseline and after 1 week after)

2. Functional Independence Measure

   Functional Independence Measure will be used to examine the construct validity of the Turkish version of the Generic Functional Index. The Functional Independence Measure is a widely accepted and validated tool that assesses functional independence in daily activities through 18 items across motor and cognitive domains, scored on a 7-point scale. Since both instruments aim to evaluate functional status, a significant correlation between Functional Independence Measure and Generic Functional Index scores would support the convergent validity of the Generic Functional Index. Functional Independence Measure's established use in rehabilitation and its robust psychometric properties make it an appropriate reference measure for this validation study. Total Functional Independence Measure scores range from 18 to 126, where lower scores indicate complete dependence and higher scores reflect complete functional independence.

   Measured: Baseline

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

1. First posted4 Jun 2025
2. Study start1 Jul 2025
3. Primary completion1 May 2026
4. Study completion1 Jun 2026

Resources

• Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
• Other trials for Musculoskeletal DiseasesStudies of the same condition, open and under way.
• 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.