ClinicalTrials.gg
CompletedNCT03413787Updated Mar 23, 2018

The Türkish Version of the Freezing of Gait Questionnaire

An observational study in Parkinson Disease, Motor Disorder and Gait Disorders, Neurologic, sponsored by T.C. ORDU ÜNİVERSİTESİ. Completed at 1 site in Turkey. Per ClinicalTrials.gov, last updated 2018-03-23.

Sponsored by T.C. ORDU ÜNİVERSİTESİ · Observational

Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
50
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 171 studies in Parkinson Disease with a site in Turkey — 49 open to participants now, 56 under way, none of them phase 3. Parkinson Disease · Turkey.

Enrollment
47th of 73
50 · median 61
Started
2018
with 11 others
Observational
73 of 171
23 open now
Registered
10th of 171
by date

Among the 171 studies in Parkinson Disease with a site in Turkey, this one is the 47th largest by enrollment of the 73 observational ones that give a count, is one of 12 that started in 2018, is one of 73 observational ones, and was the 10th registered.

Parkinson Disease

4,573 studies on the registry are indexed under Parkinson Disease; 1,086 are open to participants now.

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Open to participants now

49 of the 171 studies in Parkinson Disease with a site in Turkey are open now. Recruiting first, the newest first:

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All 49 open studies →

A study can be open while its sites in Turkey have not opened yet or have stopped. Only those recruiting at a site in Turkey →

Who these studies take

Of the 748 Parkinson Disease studies recruiting now, 311 (42%) set no upper age limit and 127 (17%) stop at 75 or younger; 63 take children under 18; 189 take healthy volunteers.

This study: all sexes · no healthy volunteers.

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02

Study summary

The freezing of gait (FOG) is one of the disabling symptoms in Parkinson's disease. The diagnosis and assessment of the FOG may be diffucult, but it is absolutely necessary. The aim of this study was to develop a Türkish version of the freezing of gait questionnaire (FOG-Q) and assess the validity and reliability of this Türkish version.

The researchers firstly communicated with the developers of the FOG-Q. The permission for Turkish version was received by Giladi. Then, the FOG-Q will be adapted into Türkish using forward-backward translation by three native Türkish-speaking forward translators and one native English-speaking backward translator. The internal reliability of the FOG-Q Türkish version will be assessed using Cronbach's alpha, and item analyses will be conducted by examining the effect on Cronbach's alpha of excluding each of the six FOG-Q items individually. The test-retest reliability will be assessed using intraclass correlation coefficient (ICC).

Convergent validity will be evaluated by means of Spearman rank correlation coefficient (rs). In this section will be determined the correlation between the FOG-Q scores and scores of the UPDRS motor section , Berg Balance Scale, Timed up and go test, Falls Efficacy Scale and Hoehn and Yahr stages.

03

Conditions studied

  • Parkinson Disease
  • Motor Disorder
  • Gait Disorders, Neurologic
04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

The study population will be selected from neurologic clinic.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • a clinical diagnosis of idiopathic PD
  • able to walk with or without a walking device

Exclusion criteria

Exclusion Criteria:

  • a diagnosis of other neurological disorders
  • any other medical conditions
  • not able to take commands.
05

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
50 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Türkish version of the Freezing of Gait Questionnaire

    Türkish version of the Freezing of Gait Questionnaire determine the episode of the freezing and the severity of the freezing by six items. Each items with five response categories (scored from 0 to 4) that are summed into a total score (range 0-24; higher scores = more severe FOG).

    Time frame: 5 minutes

Secondary outcomes

  1. Unified Parkinson's Disease Rating Scale-part III

    Türkish version of the Unified Parkinson's Disease Rating Scale (UPDRS) will be used. UPDRS-part III evaluate the motor symptoms observational by neurologist. (UPDRS) scored from 0 (normal) to 4 (maximum disability); the total score change between 0 and 56. High scores mean worse motor function.

    Time frame: 5 minutes

  2. Berg Balance Scale

    The balance will be evaluated observational during 14 different balance activities. Each item will be scored between 1 and 4. The test score change between 0 and 56. The high score indicates better balance ability.

    Time frame: 10 minutes

  3. Timed up and go test

    This test will be used to measure the progress of balance, sit to stand, and walking. The participants stands up upon therapist's command walks 3 meters, turns around, walks back to the chair and sits down. The time stops when the patient is seated. Time will be recorded.

    Time frame: 2 minutes

  4. Fall Efficacy Scale

    7 item-Fall Efficacy Scale (FES) will be used. FES is a questionnaire that assesses fear of falling. The score of the scale change 0-100 and the score above 70 indicates the fear of falling.

    Time frame: 5 minutes

  5. Hoehn and Yahr Scale

    The Hoehn and Yahr Scale (HYS) will be used to assess the severity in Parkinson's Disease based on clinical findings and functional disability. In HYS is a rating scale measured in an ordinal level. Here higher rates describe an increase severity of the disease.

    Time frame: 2 minutes

07

Study locations

1 site
  • Sevim ACARÖZ CANDAN
    Ordu, Altinordu 52100, Turkey
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jan 2018 to primary completion in Feb 2018, 0 months.

Of 378 non-industry observational studies under Parkinson Disease, half reached primary completion within 48 months of starting (the median), counting those still running; a quarter within 22 and three quarters within 133. This study's 0 months is below that.

Counting every sponsor, half of 438 studies reached it within 47 months; a quarter within 22 and three quarters within 114.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 22, 2018
First posted
Jan 29, 2018
StartActual
Jan 29, 2018
Primary completionActual
Feb 12, 2018
CompletionActual
Feb 19, 2018
Last update
Mar 23, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 23, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03413787
Lead sponsor
T.C. ORDU ÜNİVERSİTESİ
Responsible party
Sevim ACARÖZ CANDAN (Head of the Department of Physiotherapy and Rehabilitation, T.C. ORDU ÜNİVERSİTESİ) — Principal investigator
First posted
Jan 29, 2018
Start date
Jan 29, 2018
Primary completion
Feb 12, 2018
Completion
Feb 19, 2018
Last update
Mar 23, 2018

Study contacts

Sevim ACARÖZ CANDAN, PhD
principal investigator · T.C. ORDU ÜNİVERSİTESİ

Oversight

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

Not currently enrolling

This study is completed, as verified in Mar 2018. You cannot join it, but the record below documents what was studied.

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