Life Style, HealthyCORE-TRNCT07762963
Turkish Validation of the Core Life Activities Scale
An observational study of Life Style, Healthy, run by Tokat Gaziosmanpasa University at 1 site in Turkey (Türkiye).
Trial summary
This study aims to adapt the Core Life Activities Scale (CORE) into Turkish and evaluate its validity and reliability in Turkish-speaking adults. The CORE is a five-item self-report scale that assesses five basic areas of daily life: eating, sleeping, physical activity, learning new things, and social relationships. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Life Style, Healthy
- How many people
- 300 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 20 Sep 2026to 30 Sep 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: The study population will consist of approximately 300 Turkish-speaking adults aged 18 years and older from different age groups and socioeconomic backgrounds. Participants who meet the eligibility criteria and voluntarily agree to participate will be included in the study.
Who may be able to join
- Adults aged 18 years or older. Ability to read and understand Turkish fluently. No cognitive or physical impairment that would prevent completion of the questionnaires.
- Willingness to participate voluntarily and provide informed consent.
Who cannot join
- Diagnosis of a severe psychiatric or neurological disorder such as schizophrenia, bipolar disorder, or dementia.
- Presence of a terminal or severe medical condition that substantially affects activities of daily living, such as advanced-stage cancer or severe cardiovascular disease.
- Language barriers that prevent adequate understanding of the questionnaires. Providing inconsistent, intentionally inaccurate, or implausibly rapid questionnaire responses.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site
Tokat Gaziosmanpasa University, Faculty of Health Sciences
Tokat Province, 60150
Uğur Sözlü, 05368921936, ugur.sozlu@gop.edu.tr
About this study
Official title: Turkish Version of the Core Life Activities Scale: Validity and Reliability Study
This study aims to adapt the Core Life Activities Scale (CORE) into Turkish and evaluate its validity and reliability in Turkish-speaking adults. The CORE is a five-item self-report scale that assesses five basic areas of daily life: eating, sleeping, physical activity, learning new things, and social relationships. Approximately 300 adults aged 18 years and older will participate in the study. Participants will complete the Turkish version of the CORE together with measures of health-related quality of life. The CORE will also be administered again one week later to evaluate test-retest reliability. The findings will determine whether the Turkish version of the CORE is a valid and reliable tool for assessing core life activities in Turkish-speaking adults.
Read the detailed description
his observational methodological study will evaluate the validity and reliability of the Turkish version of the Core Life Activities Scale (CORE). The study will include approximately 300 Turkish-speaking adults aged 18 years and older from different age groups and socioeconomic backgrounds.
The CORE is a five-item self-report measure designed to assess five core areas of daily life: eating habits, sleep, physical activity, learning new things, and social relationships. Each item is rated on a five-point Likert scale ranging from 1 (never) to 5 (always).
After providing informed consent, participants will complete a demographic information form, the Turkish version of the CORE, the 12-Item Short Form Health Survey (SF-12), and the World Health Organization Quality of Life-BREF (WHOQOL-BREF). The SF-12 and WHOQOL-BREF will be used to examine the validity of the Turkish CORE. The CORE will be administered again one week later to assess test-retest reliability.
Psychometric analyses will be performed to evaluate the reliability and validity of the Turkish version of the CORE. Internal consistency, test-retest reliability, and construct-related validity will be examined. Data collection is planned between August 20, 2026 and September 30, 2026.
- Conditions
- Life Style, Healthy
- Keywords
- Validity, Reliability, Activities of Daily Living, Physical Activity
- Medical subject headings
- Motor Activity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Turkish-Speaking Adults | Approximately 300 Turkish-speaking adults aged 18 years and older will be included in this observational validation study. Participants will complete the Turkish version of the Core Life Activities Scale (CORE), the SF-12, and the WHOQOL-BREF. The CORE will be administered again one week later to assess test-retest reliability. No intervention will be administered. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Internal Consistency of the Turkish Core Life Activities Scale
Internal consistency of the Turkish version of the Core Life Activities Scale (CORE) will be evaluated using Cronbach's alpha coefficient. The CORE consists of five items assessing eating, sleeping, physical activity, learning new things, and social relationships, with each item rated on a 5-point Likert scale from 1 (never) to 5 (always).
Measured: Baseline
Test-Retest Reliability of the Turkish Core Life Activities Scale
Test-retest reliability of the Turkish version of the CORE will be evaluated by comparing CORE scores obtained at the initial assessment with scores obtained one week later. The association between the two assessments will be examined to determine the temporal stability of the scale.
Measured: Baseline and 1 week
Construct Validity of the Turkish Core Life Activities Scale
Construct validity of the Turkish version of the CORE will be evaluated by examining its relationships with health-related quality of life measures assessed using the 12-Item Short Form Health Survey (SF-12) and the World Health Organization Quality of Life-BREF (WHOQOL-BREF).
Measured: Baseline
Secondary outcomes (1)
Factor Structure of the Turkish Core Life Activities Scale
The factor structure of the Turkish version of the CORE will be examined using factor analysis to evaluate its underlying dimensional structure.
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Aug 2026
- Study start20 Sep 2026 (estimated)
- Primary completion30 Sep 2026 (estimated)
- Study completion30 Sep 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Life Style, HealthyStudies 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.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Prospective
- Enrolment
- 300 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Tokat Gaziosmanpasa University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Uğur Sözlü, Tokat Gaziosmanpasa University
- Investigators
- Uğur Sözlü, PhD, Principal investigator, Tokat Gaziosmanpaşa Üniversitesi
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07762963
- Sponsor's protocol ID
- E-13232362-100-582766
- Acronym
- CORE-TR
- Status last verified
- Sep 2026
- First submitted
- 10 Aug 2026
- Last updated
- 25 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Cho S, Park K, Jung D, Son G, Cho E, Choi KH. Development and validation of the core life activities scale. Front Psychol. 2024 Apr 22;15:1359276. doi: 10.3389/fpsyg.2024.1359276. eCollection 2024.
PubMed 38711750
Study at a glance
From the registry record, last updated by the sponsor on 25 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Turkish Version of the Core Life Activities Scale: Validity and Reliability Study
- ClinicalTrials.gov ID
- NCT07762963
- Acronym / sponsor ID
- CORE-TR / E-13232362-100-582766
- Conditions
- Life Style, Healthy
- Keywords
- Validity, Reliability, Activities of Daily Living, Physical Activity
- Study type
- Observational
- Recruitment status
- Not yet recruiting
- Enrolment
- 300 participants (estimated)
- Lead sponsor
- Tokat Gaziosmanpasa UniversityUniversity, hospital or other
- Study start
- 20 Sep 2026 (estimated)
- Primary completion
- 30 Sep 2026 (estimated)
- Study completion
- 30 Sep 2026 (estimated)
- First posted
- 13 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study aims to adapt the Core Life Activities Scale (CORE) into Turkish and evaluate its validity and reliability in Turkish-speaking adults. The CORE is a five-item self-report scale that assesses five basic areas of daily life: eating, sleeping, physical activity, learning new things, and social relationships. Approximately 300 adults aged 18 years and older will participate in the study. Participants will complete the Turkish version of the CORE together with measures of health-related quality of life. The CORE will also be administered again one week later to evaluate test-retest reliability. The findings will determine whether the Turkish version of the CORE is a valid and reliable tool for assessing core life activities in Turkish-speaking adults.
Detailed description
his observational methodological study will evaluate the validity and reliability of the Turkish version of the Core Life Activities Scale (CORE). The study will include approximately 300 Turkish-speaking adults aged 18 years and older from different age groups and socioeconomic backgrounds.
The CORE is a five-item self-report measure designed to assess five core areas of daily life: eating habits, sleep, physical activity, learning new things, and social relationships. Each item is rated on a five-point Likert scale ranging from 1 (never) to 5 (always).
After providing informed consent, participants will complete a demographic information form, the Turkish version of the CORE, the 12-Item Short Form Health Survey (SF-12), and the World Health Organization Quality of Life-BREF (WHOQOL-BREF). The SF-12 and WHOQOL-BREF will be used to examine the validity of the Turkish CORE. The CORE will be administered again one week later to assess test-retest reliability.
Psychometric analyses will be performed to evaluate the reliability and validity of the Turkish version of the CORE. Internal consistency, test-retest reliability, and construct-related validity will be examined. Data collection is planned between August 20, 2026 and September 30, 2026.
Study design
- Observational model
- Other
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Turkish-Speaking Adults | – | –Approximately 300 Turkish-speaking adults aged 18 years and older will be included in this observational validation study. Participants will complete the Turkish version of the Core Life Activities Scale (CORE), the SF-12, and the WHOQOL-BREF. The CORE will be administered again one week later to assess test-retest reliability. No intervention will be administered. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- The study population will consist of approximately 300 Turkish-speaking adults aged 18 years and older from different age groups and socioeconomic backgrounds. Participants who meet the eligibility criteria and voluntarily agree to participate will be included in the study.
Key inclusion criteria (2 listed)
- Adults aged 18 years or older. Ability to read and understand Turkish fluently. No cognitive or physical impairment that would prevent completion of the questionnaires.
- Willingness to participate voluntarily and provide informed consent.
Key exclusion criteria (3 listed)
- Diagnosis of a severe psychiatric or neurological disorder such as schizophrenia, bipolar disorder, or dementia.
- Presence of a terminal or severe medical condition that substantially affects activities of daily living, such as advanced-stage cancer or severe cardiovascular disease.
- Language barriers that prevent adequate understanding of the questionnaires. Providing inconsistent, intentionally inaccurate, or implausibly rapid questionnaire responses.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Internal Consistency of the Turkish Core Life Activities Scale
Time frame: Baseline
Internal consistency of the Turkish version of the Core Life Activities Scale (CORE) will be evaluated using Cronbach's alpha coefficient. The CORE consists of five items assessing eating, sleeping, physical activity, learning new things, and social relationships, with each item rated on a 5-point Likert scale from 1 (never) to 5 (always).
Test-Retest Reliability of the Turkish Core Life Activities Scale
Time frame: Baseline and 1 week
Test-retest reliability of the Turkish version of the CORE will be evaluated by comparing CORE scores obtained at the initial assessment with scores obtained one week later. The association between the two assessments will be examined to determine the temporal stability of the scale.
Construct Validity of the Turkish Core Life Activities Scale
Time frame: Baseline
Construct validity of the Turkish version of the CORE will be evaluated by examining its relationships with health-related quality of life measures assessed using the 12-Item Short Form Health Survey (SF-12) and the World Health Organization Quality of Life-BREF (WHOQOL-BREF).
1 secondary outcome
Factor Structure of the Turkish Core Life Activities Scale
Time frame: Baseline
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Sep 2026.
- Results publication: PubMed 38711750Cho S, Park K, Jung D, Son G, Cho E, Choi KH. Development and validation of the core life activities scale. Front Psychol. 2024 Apr 22;15:1359276. doi: 10.3389/fpsyg.2024.1359276. eCollection 2024.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Uğur Sözlü, PhD principal investigator
Tokat Gaziosmanpaşa Üniversitesi
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Life Style, Healthy, run by Tokat Gaziosmanpasa University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 25 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Uğur Sözlü, PhD (05368921936, ugur.sozlu@gop.edu.tr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Internal Consistency of the Turkish Core Life Activities Scale (time frame: Baseline). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07762963, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Sep 2026.