Translation, Cultural Adaptation, and Validation of the Turkish Version of the St George's Respiratory Questionnaire for Idiopathic Pulmonary Fibrosis (SGRQ-I).
6 affiliations
- 1Department of Physiotherapy and Rehabilitation, Hamidiye Faculty of Health Sciences, University of Health Sciences, İstanbul, Türkiye.
- 2Department of Physiotherapy and Rehabilitation, Hamidiye Institute of Health Sciences, University of Health Sciences, İstanbul, Türkiye.
- 3Department of Physiotherapy and Rehabilitation, İstanbul Esenyurt University Faculty of Health Sciences, İstanbul, Türkiye.
- 4Department of Physiotherapy and Rehabilitation, İzmir Bakırçay University Faculty of Health Sciences, İzmir, Türkiye.
- 5Clinic of Chest Diseases, University of Health Sciences Türkiye, Yedikule Chest Diseases and Thoracic Surgery Training and Research Hospital, İstanbul, Türkiye.
- 6Department of Pulmonary Diseases, University of Health Sciences Türkiye, Başakşehir Çam and Sakura City Hospital, İstanbul, Türkiye.
Abstract
Objective
Idiopathic pulmonary fibrosis (IPF) substantially impairs health-related quality of life (HRQoL). The IPF-specific St George's Respiratory Questionnaire (SGRQ-I) is not available in Turkish. This study aimed to translate, culturally adapt, and validate the SGRQ-I for Turkish-speaking patients with IPF.Material and methods
Following international guidelines, the SGRQ-I underwent forward translation, reconciliation, back translation, developer review, and cognitive debriefing. Adult patients with IPF were consecutively recruited. Validity was assessed against the Turkish SGRQ and by examining associations with forced vital capacity (FVC), diffusing capacity for carbon monoxide (DLCO), the six-minute walk test (6MWT), gender-age-physiology (GAP) stage, modified Medical Research Council (mMRC) grade, and long-term oxygen therapy (LTOT) status. Test-retest reliability was assessed over seven days in clinically stable patients.Results
One hundred eighty patients were included (mean age 66.3±10.0 years; 36% male). Agreement with the SGRQ was excellent for the activities, impact, and total scores [intraclass correlation coefficients (ICC) >0.90] and moderate for the symptoms score. The SGRQ-I total score was significantly correlated with FVC% (r = -0.476), DLCO% (r = -0.406), and 6MWT distance (r = -0.462, all P < 0.001). SGRQ-I scores differed significantly across groups stratified by DLCO%, GAP stage, mMRC grade, and LTOT status (P < 0.01). Test-retest reliability was good to excellent, with ICCs ranging from 0.891 to 0.962.Conclusion
The Turkish SGRQ-I is a valid and reliable instrument for assessing HRQoL in IPF, supporting its use in clinical practice and multinational research.
Related
- Persian version of the international consultation on incontinence questionnaire-pediatric lower urinary tract symptoms caregiver module: translation, validation and cultural adaptation.
- Translation, Cultural Adaptation, and Preliminary Validation of the Persian Version of the Assessment of Medical Education Environment by Teachers (AMEET) Questionnaire
- Translation and Validation of the 5-Item Dry Eye Questionnaire into Lithuanian
- Cross-cultural adaptation of the Young Disability Questionnaire-Spine into Turkish for children with spinal pain: a methodological validation study
- Cultural adaptation and validation of the Suicidal Behaviours Questionnaire – Autism Spectrum Conditions (SBQ-ASC) for use in Brazil
BibTeX
@article{pehlivan2026translation,
title = {{Translation, Cultural Adaptation, and Validation of the Turkish Version of the St George's Respiratory Questionnaire for Idiopathic Pulmonary Fibrosis (SGRQ-I).}},
author = {Esra Pehlivan and Zeynep Betül Özcan and Cahidenur Koçak and Fulya Senem Karaahmetoğlu and Melih Zeren and Ramazan Eren and Barış Demirkol and Umut İlhan and Halit Çınarka and Erdoğan Çetinkaya},
journal = {Thoracic research and practice},
year = {2026},
month = oct,
doi = {10.4274/thoracrespract.2026.2026-6-11},
url = {https://europepmc.org/article/MED/42902607},
note = {CC BY-NC},
}
RIS
TY - JOUR
TI - Translation, Cultural Adaptation, and Validation of the Turkish Version of the St George's Respiratory Questionnaire for Idiopathic Pulmonary Fibrosis (SGRQ-I).
AU - Esra Pehlivan
AU - Zeynep Betül Özcan
AU - Cahidenur Koçak
AU - Fulya Senem Karaahmetoğlu
AU - Melih Zeren
AU - Ramazan Eren
AU - Barış Demirkol
AU - Umut İlhan
AU - Halit Çınarka
AU - Erdoğan Çetinkaya
PY - 2026
DA - 2026/10/01
JO - Thoracic research and practice
DO - 10.4274/thoracrespract.2026.2026-6-11
UR - https://europepmc.org/article/MED/42902607
AB - Objective Idiopathic pulmonary fibrosis (IPF) substantially impairs health-related quality of life (HRQoL). The IPF-specific St George's Respiratory Questionnaire (SGRQ-I) is not available in Turkish. This study aimed to translate, culturally adapt, and validate the SGRQ-I for Turkish-speaking patients with IPF.Material and methods Following international guidelines, the SGRQ-I underwent forward translation, reconciliation, back translation, developer review, and cognitive debriefing. Adult patients with IPF were consecutively recruited. Validity was assessed against the Turkish SGRQ and by examining associations with forced vital capacity (FVC), diffusing capacity for carbon monoxide (DLCO), the six-minute walk test (6MWT), gender-age-physiology (GAP) stage, modified Medical Research Council (mMRC) grade, and long-term oxygen therapy (LTOT) status. Test-retest reliability was assessed over seven days in clinically stable patients.Results One hundred eighty patients were included (mean age 66.3±10.0 years; 36% male). Agreement with the SGRQ was excellent for the activities, impact, and total scores [intraclass correlation coefficients (ICC) >0.90] and moderate for the symptoms score. The SGRQ-I total score was significantly correlated with FVC% (r = -0.476), DLCO% (r = -0.406), and 6MWT distance (r = -0.462, all P < 0.001). SGRQ-I scores differed significantly across groups stratified by DLCO%, GAP stage, mMRC grade, and LTOT status (P < 0.01). Test-retest reliability was good to excellent, with ICCs ranging from 0.891 to 0.962.Conclusion The Turkish SGRQ-I is a valid and reliable instrument for assessing HRQoL in IPF, supporting its use in clinical practice and multinational research.
SN - 2979-9139
ER -