SmokersCATNCT06644456
CAT Score and Airway Limitation in Adult Smokers
An observational study of Smokers, run by Muğla Sıtkı Koçman University at 1 site in Turkey (Türkiye).
Trial summary
This study aimed to show the relationship between CAT Score and airway limitation in smokers who applied to MSKU Chest Diseases Polyclinic with respiratory complaints (shortness of breath, cough, sputum, etc.) and underwent respiratory function tests. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Smokers
- How many people
- 90 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Aug 2024to 10 Mar 2025
- Phase
- Observational
- Are there results?
- None posted in the registry
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
- No healthy volunteers
- Adult, Older adult
Study population: Patients who applied to MSKU Chest Diseases Polyclinic with respiratory complaints and had a history of smoking were subjected to respiratory function tests.
Who may be able to join
- Smoking history Being over 18 years old Being symptomatic
Who cannot join
- Having a diagnosis of chronic respiratory disease (COPD, Asthma, IPF)
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Relationship Between CAT Score and Airway Limitation in Adult Smokers
This study aimed to show the relationship between CAT Score and airway limitation in smokers who applied to MSKU Chest Diseases Polyclinic with respiratory complaints (shortness of breath, cough, sputum, etc.) and underwent respiratory function tests. CAT Score is a measurement used to evaluate the quality of life of Chronic Obstructive Pulmonary Disease (COPD) patients. CAT Score is a scale used to assess patients' symptoms (such as shortness of breath, cough, and sputum) and problems affecting their daily activities. CAT Score usually takes a value between 0 and 40, and a high score may indicate that the patient's quality of life is low. There are studies on the usability of CAT Score in Bronchiectasis, Tuberculosis, and Asthma Diseases other than COPD. We hypothesize that there is a positive correlation between CAT Score and airway limitation in smokers before COPD develops. The study was planned as cross-sectional. Between July 2024 and December 2024, patients who apply to MSKU Chest Diseases Polyclinic with respiratory complaints and have a history of smoking will have their CAT scores, 6-minute walking test, and height and weight measurements performed and recorded. In our study, the comparison of CAT Scores of individuals who smoke and have normal respiratory function test parameters with those who are not normal but excluded from COPD is planned as the primary endpoint, and comparisons of CAT Scores with exercise capacities and body mass indexes are planned as the secondary endpoint.
- Conditions
- Smokers
- Keywords
- smoker, CAT
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 |
|---|---|---|
| Smokers with airway limitation | Smokers with FEV1<80% | |
| Smokers without airway limitation | smokers with FEV1>80 |
What is being measured
The primary outcome is the main question the study is designed to answer.
CAT
In our study, the primary endpoint was to compare the CAT scores of individuals who smoked and had normal pulmonary function test parameters with those who were not normal but excluded from COPD.
Measured: day 1
Secondary outcomes (1)
6MWT-BMI
Comparisons of exercise capacities and body mass indexes with CAT Scores are planned as secondary endpoints. Weight and height will be combined to report BMI in kg/m^2. 6mwt distance will be reported as meter
Measured: day 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Oct 2024
- Study start1 Aug 2024
- Primary completion1 Jan 2025
- Study completion10 Mar 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for SmokersStudies 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
- Case only
- Time perspective
- Prospective
- Enrolment
- 90 participants (actual)
Sponsor and investigators
- Lead sponsor
- Muğla Sıtkı Koçman University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Sabri Serhan OLCAY, Muğla Sıtkı Koçman University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06644456
- Sponsor's protocol ID
- CAT24
- Acronym
- CAT
- Status last verified
- Nov 2024
- First submitted
- 11 Oct 2024
- Last updated
- 14 Jul 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 14 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Relationship Between CAT Score and Airway Limitation in Adult Smokers
- ClinicalTrials.gov ID
- NCT06644456
- Acronym / sponsor ID
- CAT / CAT24
- Conditions
- Smokers
- Keywords
- smoker, CAT
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 90 participants (actual)
- Lead sponsor
- Muğla Sıtkı Koçman UniversityUniversity, hospital or other
- Study start
- 1 Aug 2024 (actual)
- Primary completion
- 1 Jan 2025 (actual)
- Study completion
- 10 Mar 2025 (actual)
- First posted
- 16 Oct 2024 (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 aimed to show the relationship between CAT Score and airway limitation in smokers who applied to MSKU Chest Diseases Polyclinic with respiratory complaints (shortness of breath, cough, sputum, etc.) and underwent respiratory function tests. CAT Score is a measurement used to evaluate the quality of life of Chronic Obstructive Pulmonary Disease (COPD) patients. CAT Score is a scale used to assess patients' symptoms (such as shortness of breath, cough, and sputum) and problems affecting their daily activities. CAT Score usually takes a value between 0 and 40, and a high score may indicate that the patient's quality of life is low. There are studies on the usability of CAT Score in Bronchiectasis, Tuberculosis, and Asthma Diseases other than COPD. We hypothesize that there is a positive correlation between CAT Score and airway limitation in smokers before COPD develops. The study was planned as cross-sectional. Between July 2024 and December 2024, patients who apply to MSKU Chest Diseases Polyclinic with respiratory complaints and have a history of smoking will have their CAT scores, 6-minute walking test, and height and weight measurements performed and recorded. In our study, the comparison of CAT Scores of individuals who smoke and have normal respiratory function test parameters with those who are not normal but excluded from COPD is planned as the primary endpoint, and comparisons of CAT Scores with exercise capacities and body mass indexes are planned as the secondary endpoint.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Smokers with airway limitation | – | –Smokers with FEV1<80% |
| Smokers without airway limitation | – | –smokers with FEV1>80 |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients who applied to MSKU Chest Diseases Polyclinic with respiratory complaints and had a history of smoking were subjected to respiratory function tests.
Key inclusion criteria (1 listed)
- Smoking history Being over 18 years old Being symptomatic
Key exclusion criteria (1 listed)
- Having a diagnosis of chronic respiratory disease (COPD, Asthma, IPF)
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
CAT
Time frame: day 1
In our study, the primary endpoint was to compare the CAT scores of individuals who smoked and had normal pulmonary function test parameters with those who were not normal but excluded from COPD.
1 secondary outcome
6MWT-BMI
Time frame: day 1
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Jul 2026.
- Individual participant dataSharing planned: Undecided
Related trials for Smokers
Not yet recruiting
Home-Based Respiratory Muscle Training and Aerobic Exercise Programs to Improve Lung Health in Current and Former Cigarette Smokers
Lung Carcinoma
Recruiting
Probiotics Versus Antibiotics as an Adjuvant to Non-surgical Periodontal Treatment Among Smokers With Stage II, Grade B Periodontitis
Probiotics, Antibiotics
Recruiting
Ozone Gel Versus Chlorohexidine Gel as an Adjunct to Non-Surgical Treatment of Stage II Periodontitis Grade B Among Smokers Patients
Ozone Gel, Chlorohexidine Gel
Active, not recruiting
Assessment of HPHC Exposure in Smokers Switching to THS/TP18 With Different Device Variants
Smoking
Active, not recruitingObservational study
EValuating the Safety Of De-escaLated Head and Neck Irradiation in HPV positivE Oropharynx Cancer in Non-smokers/Minimal Smokers
Oropharyngeal Cancer
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. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
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 Smokers, run by Muğla Sıtkı Koçman 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 1 inclusion and 1 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: finished, as of the sponsor's last update on 14 Jul 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
CAT (time frame: day 1). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 14 Jul 2026.