The Saint George Respiratory Questionnaire (SGRQ) questionnaire is a frequently used questionnaire in the respiratory patient group, and the Turkish version of this questionnaire, which was created for use in idiopathic pulmonary fibrosis patients, is not available. There is no commonly used quality of life questionnaire in patients with idiopathic pulmonary fibrosis. The aim of the study is to translate and validate the SGRQ idiopathic pulmonary fibrosis version of questionnaire into Turkish.

• The study is a cross-sectional, questionnaire validation study.
• It is planned to complete the study within 2 years after the sufficient sample size is reached and the evaluations are made. The study will be terminated when the sufficient number of patients is reached.
• The main thing in the application of special tools such as questionnaires is to prove the usability of the tool in the sample group to which it will be applied. The first step for this is the translation phase from the original language to the other language. At this stage, it is ideal for people who know the structure of the target language and the original language well, who have a good command of these languages and who are experienced in doing the translation. In our study, two people who are fluent in the original language will translate the questionnaire into the target language and two different people will translate the original language again.
• To the participants; Demographic Evaluation Form, Saint George's Respiratory Questionnaire (SGRQ), and SGRQ idiopathic pulmonary fibrosis version of Questionnaire (SGRQ-I) will be applied. The SGRQ-I questionnaire will be administered again one week after the first application date in order to determine the test-retest reliability.
• Scale reliability will be tested with Cronbach Alpha.For construct validity, confirmatory factor analysis will be applied and confirmatory factor analysis will be applied. For content validity, opinions of different experts will be taken for each item, and the status of items in the scale will be determined according to the results obtained by substituting it. In the logical validity process; Coverage of the components constituting the measured skill for each item will be considered.

Inclusion Criteria:

• Be over 18 years old
• Having a Diagnosis of Idiopathic Pulmonary Fibrosis
• To be literate in Turkish

Exclusion Criteria:

• Exacerbation or exacerbation in the last 6 weeks
• Presence of comorbidities affecting ambulation
• Cognitive impairment

Turkish People

Diagnosed with Idiopathic Pulmonary Fibrosis