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RecruitingNCT05422456Updated Jun 1, 2023

The Turkish Version of Functional Disability Inventory

An observational study in Chronic Pain, sponsored by Akdeniz University. Recruiting at 1 site in Turkey. Open to participants aged 8 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-06-01.

Sponsored by Akdeniz University · Observational

From the registry’s dates

  • Primary completion was expected by Aug 2023, 3 years 2 months ago, but the record still lists the study as recruiting.
  • Started Sep 2022; still recruiting 4 years 1 month later.
Study type
Observational
Model
Case-control
Time perspective
Cross-sectional
Enrollment
250
Ages
8 Years to 18 Years
Sex
All
01

Study summary

The goal of this study is to determine the validity and reliability of the Turkish version of the Functional Disability Inventory (FDI), which assesses functional disability in daily life, school, and home activities of children aged 8 to 18, as well as to ensure cultural adaptation of this measurement. Chronic pain is the most frequent type of pain in children and adolescents, affecting one-quarter of the population. Children and adolescents with chronic pain have difficulty completing activities such as walking, jogging, and participating in sports, as well as daily activities. There is no valid and reliable measurement that measures pain-related disability in everyday life, at home, or at school from the perspective of a child in the literature. This study hypothesizes that the Functional Disability Inventory is a valid and reliable measurement for measuring functional disability in the Turkish population of children with chronic pain.

Read the detailed description

Chronic pain in children and adolescents is defined as pain that lasts longer than three months and is unabsorbable. Approximately 5% of the children said they were suffering from moderate to severe chronic pain, as well as impairments in their physical and psychosocial functions. Children and adolescents with chronic pain have difficulty completing activities such as walking, jogging, and participating in sports, as well as daily activities. Schoolchildren with chronic pain, for example, were shown to be five times more likely than their classmates without pain to miss school (13.9 percent vs. 2.4 percent), and it has been observed that absenteeism from school increases the likelihood of grade repeat in children with chronic pain.

Headaches affect between 57 and 82 percent of children and adolescents aged 7 to 15. It is wrong to believe that a headache with this frequency and associated concomitant conditions does not result in functional disability and limitations in everyday activities. When compared to their peers without headaches, 62 percent of children and adolescents with headaches reported more functional disability due to moderate to severe headache, limitation in daily activities, and absenteeism from school. Pain and functional incapacity caused by pain cannot be assumed to have no impact on a person's ability to participate in activities. The term "participation" refers to a person's involvement in the circumstances of his or her life. Participation in daily activities is critical for all children's healthy development, regardless of their age.

The fundamental goal of functional evaluation is to demonstrate a person's ability to function in society independently. This skill is employed in everyday activities such as personal care, social contact, housework, and recreational activities. The importance of these functions in daily life in pediatric patients, on the other hand, receives less emphasis (5). Walker and Greene (1991) developed the Functional Disability Inventory (FDI) to assess impairments in children and adolescents caused by a variety of pediatric health conditions (6). There are fifteen items in the FDI category. These tasks are used to assess how difficult it is for the youngster to walk, climb stairs, eat, do household chores, go to school, participate in sports, read and write, and watch television.

On a four-point Likert scale, (0=no issue, 4=impossible), each item is rated. With the child's own report, FDI assesses the difficulty in physical and psychological functions caused by the child's physical health. It is determined by taking into account the child's activity restrictions throughout the previous two weeks. The scale runs from 0 to 60. The total score is calculated by summing the individual item scores. A higher score indicates a higher level of disability. The purpose of this study is to see if the Turkish version of the Functional Disability Inventory (FDI) is valid and reliable in a Turkish sample of children with chronic pain.

02

Conditions studied

  • Chronic Pain

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Keywords

  • pediatric
  • chronic pain
  • headache
  • functional disability
03

In context

Chronic Pain

2,930 studies on the registry are indexed under Chronic Pain; 701 are open to participants now.

This study's planned enrollment of 250 is above the median of 126 across 688 observational studies indexed under Chronic Pain.

Browse Chronic Pain studies →

Lead sponsor

Akdeniz University is the lead sponsor of 289 studies on the registry; 60 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
8 Years to 18 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

children are diagnosed with chronic headache and their health peers

Eligibility criteria

Inclusion Criteria:

  • Clinical diagnosis of chronic pain
  • Age between 8-18 years
  • Native language is Turkish

Exclusion Criteria:

  • Diagnosis of autism spectrum disorder and attention deficit and hyperactivity disorder, psychotic symptoms, depression, etc.

Inclusion Criteria for control group:

  • Not diagnosed of chronic pain and psychiatric and neurological disease
  • Aged at 8-18 years old
  • Native language is Turkish

Exclusion Criteria for control group:

  • Children whose parents or themselves refused to participate
  • Native language is not Turkish
05

Study design

Observational model
Case-control
Time perspective
Cross-sectional
Enrollment
250 participants (estimated)
Patient registry
No

Groups and cohorts

  • Chronic pain group

    children are diagnosed with chronic headache by pediatric neurologist

  • Health group

    children without chronic pain

06

What researchers measure

Primary outcomes

  1. Evaluation of functional disability

    Functional Disability Inventory (FDI) is 15 item self-report measurement designed to evaluate functional disability in children while they were doing various activities. Each item scored 0 to 4; 0 represents no trouble and 4 represents impossible.

    Time frame: Baseline

  2. Evaluation of severity of pain

    Wong-Baker Face Pain Scale is valid and reliable measurement preferred by children and parents to evaluate severity of pain. It consists of 6 face expression that symbolized pain severity. These Show the stages of increased pain from smiling face (0 point) to a very sad and crying face (10 points). Children rate their current pain between these faces.

    Time frame: Baseline

  3. Evaluation of pain

    In several pediatric diagnostic groups, the Adolescent Pediatric Pain Tool (APPT) is applied for pain assessment APPT can be used on children aged 7 to 18. The APPT consists of three separate parts. First, the body diagram allows the child to indicate the location of the pain. Second, pain intensity was rated on a scale from "no pain" to "worst possible pain" based on 5-point Likert scale. Finally, the characteristics of pain and 67 words describing pain are indicated.

    Time frame: Baseline

Secondary outcomes

  1. Evaluation of somatization

    Children's Somatization Inventory is a scale that evaluates the child's symptoms experienced in the last two weeks in both parent and child forms and the child's somatization symptoms from both perspectives. Total score is obtained by adding up all the scores. Higher scores indicate greater somatization complaints. Scores range from 0 to 96.

    Time frame: Baseline

  2. Evaluation of quality of life

    Pediatric Quality of Life Inventory is a generic health related quality of life measure consisting of four core scales, physical function (8 items), emotional function (5 items), social function (5 items) and school function (5 items) that is intended for use in healthy and patient populations. Respondents are asked to recall the last month and indicate how frequently - from never to almost always - they have experienced specific phenomena. Item responses (0-100) are averaged to form total and core scores; higher scores indicate higher functioning.

    Time frame: Baseline

  3. Evaluation of anxiety

    The measurement consists of two subscales as State Anxiety Scale and Trait Anxiety Scale. Each subscale has 20 items, and 40 items in total. State Anxiety scale assesses momentary subjective feelings in certain situations. Trait Anxiety Scale assesses continued subjective chronic feelings such as worry, anxiety and irritability. Total scores change between 20-80. Scores between 20-39 indicate mild, scores between 40-59 indicate moderate, scores between 60-79 indicate severe anxiety, and scores of 80 indicate panic.

    Time frame: Baseline

  4. Evaluation of Depression

    Children Depression Scale is a measurement that can be used in children aged 6-17. The scale evaluates using the child's own answers. It consists of 27 items. In these choices, there are "sometimes," "often" and "always" answers containing the item related to the question. Each item scored with 0,1,2. The highest score is 54, and higher scores indicating higher level of depression.

    Time frame: Baseline

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Murphy NA, Carbone PS; American Academy of Pediatrics Council on Children With Disabilities. Promoting the participation of children with disabilities in sports, recreation, and physical activities. Pediatrics. 2008 May;121(5):1057-61. doi: 10.1542/peds.2008-0566. PubMed 18450913 ↗
  • Sonagra M, Jones J, McGill M, Gmuca S. Exploring the intersection of adverse childhood experiences, pediatric chronic pain, and rheumatic disease. Pediatr Rheumatol Online J. 2022 Feb 14;20(1):14. doi: 10.1186/s12969-022-00674-x. PubMed 35164793 ↗
  • Offenbacher M, Kohls N, Walker L, Hermann C, Hugle B, Jager N, Richter M, Haas JP. Functional limitations in children and adolescents suffering from chronic pain: validation and psychometric properties of the German Functional Disability Inventory (FDI-G). Rheumatol Int. 2016 Oct;36(10):1439-48. doi: 10.1007/s00296-016-3504-5. Epub 2016 Jun 4. PubMed 27262712 ↗
  • Groenewald CB, Tham SW, Palermo TM. Impaired School Functioning in Children With Chronic Pain: A National Perspective. Clin J Pain. 2020 Sep;36(9):693-699. doi: 10.1097/AJP.0000000000000850. PubMed 32487871 ↗
  • Ferracini GN, Dach F, Speciali JG. Quality of life and health-related disability in children with migraine. Headache. 2014 Feb;54(2):325-34. doi: 10.1111/head.12251. Epub 2013 Oct 29. PubMed 24512577 ↗
  • Claar RL, Walker LS. Functional assessment of pediatric pain patients: psychometric properties of the functional disability inventory. Pain. 2006 Mar;121(1-2):77-84. doi: 10.1016/j.pain.2005.12.002. Epub 2006 Feb 9. PubMed 16480823 ↗

Individual participant data

Plan to share: No — the results will be published in the journal

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 1, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05422456
Lead sponsor
Akdeniz University
Responsible party
Ozgun Kaya Kara (Assoc. Prof. PhD, Akdeniz University) — Principal investigator
First posted
Jun 16, 2022
Start date
Sep 8, 2022
Primary completion
Aug 8, 2023 (estimated)
Completion
Aug 12, 2023 (estimated)
Last update
Jun 1, 2023

Study contacts

Ishak Isik, MD
Contact
etik.kurul.07@gmail.com
02422494400
Ozgun Kaya Kara, Assoc. Prof.
Contact
Ozgun Kaya Kara
study director · Akdeniz University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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