Turkish version of the S3-NIV questionnaire: testing its reliability for home NIV patients

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This multi-center observational study will translate and validate the Turkish S3-NIV questionnaire for adults with chronic respiratory failure using home NIV. About 120 stable patients from several centers will complete the 11-item survey, along with demographic and clinical data. A subset of 40 participants will repeat the survey after 14–15 days to assess test-retest reliability; analyses will examine internal consistency, factor structure, and correlations with clinical parameters like NIV usage hours and blood gas values.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Diagnosed with chronic respiratory failure requiring home non-invasive ventilation (NIV).
* Using a home NIV device for at least 3 months.
* Being in a clinically stable phase (no exacerbation or hospitalization in the last 1 month).
* Able to understand and answer the questionnaire.
* Provided written informed consent.

Exclusion Criteria:

* Acute respiratory failure or clinical instability.
* Severe cognitive impairment or psychiatric disorders preventing reliable communication.
* Active malignancy or terminal illness with a short life expectancy.
* Refusal to provide informed consent.

Where it's running

• Sureyyapasa Chest Diseases and Thoracic Surgery Training and Research Hospital
  Istanbul, Turkey (Türkiye) Recruiting

Study contacts

• Principal investigator: Ipek Ozmen, Prof. — Sureyyapasa Chest Diseases and Thoracic Surgery Training and Research Hospital
• Study coordinator: Dilek Unsal, PT PhD(c)
• Email: fztdlkunsal@gmail.com
• Phone: +90 530 4641198

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.