An observational study in Life Style, Healthy, sponsored by Tokat Gaziosmanpasa University. Not yet recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-25.
Sponsored by Tokat Gaziosmanpasa University · Observational
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.
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.
9,798 studies on the registry are indexed under Motor Activity; 1,910 are open to participants now.
This study's planned enrollment of 300 is above the median of 98 across 1,235 observational studies indexed under Motor Activity.
Browse Motor Activity studies →Tokat Gaziosmanpasa University is the lead sponsor of 170 studies on the registry; 38 are open to participants now.
Counted across the registry records on this site, refreshed daily.
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.
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.
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 .
Exclusion Criteria:
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.
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
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).
Time frame: 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.
Time frame: 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).
Time frame: Baseline
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.
Time frame: Baseline
Plan to share: No
Start is estimated for Sep 2026; primary completion for Sep 2026, 0 months later.
Of 490 non-industry observational studies under Motor Activity, half reached primary completion within 22 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 48. This study's planned 0 months is below that.
Counting every sponsor, half of 500 studies reached it within 22 months; a quarter within 8 and three quarters within 48.
Start moved once since we started tracking on Sep 25, 2026: Aug 2026 → Sep 2026, on Sep 25, 2026.
Earlier changes are on the record history on ClinicalTrials.gov ↗
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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