Chinese version of the severe respiratory insufficiency questionnaire for patients with COPD receiving long-term oxygen therapy

Abstract

PurposePatients with advanced-stage COPD often experience severe hypoxemia. Treatment with long-term oxygen therapy (LTOT) may relieve patients’ symptoms and increase survival. As COPD is incurable, improving patients’ health-related quality of life is important. The Chinese version of the Severe Respiratory Insufficiency Questionnaire (SRI) is valid for patients with hypercapnic COPD undergoing noninvasive positive airway pressure ventilation at home. However, the reliability and validity of the Chinese SRI for patients with COPD undergoing LTOT have not been investigated.Patients and methodsWe analyzed reliability using Cronbach’s α coefficient. Construct validity was assessed with principal, exploratory, and confirmatory factor analysis. Concurrent validity was evaluated through the correlation between SRI domains and Chronic Respiratory Disease Questionnaire (CRQ) domains. Content validity was assessed by calculating the correlation between each SRI item score and the total score for the relevant domain.ResultsIn total, 161 patients participated in this study. The Cronbach’s α coefficient for all SRI domains was >0.7, except for the attendant symptoms and sleep domain. Exploratory and confirmatory factor analysis showed a good model fit for each domain, but the factors extracted from each domain were correlated. SRI and CRQ domains correlated well with respect to similar aspects of health-related quality of life, indicating good concurrent validity. Content validity was indirectly shown by a good correlation between each item score and the total score of the relevant domain.ConclusionThe Chinese version of the SRI has a good reliability and validity for patients with COPD undergoing LTOT in China.

Validation of the Polish version of Severe Respiratory Insufficiency Questionnaire

“…In 2018, Chinese authors demonstrated good validity and reliability of the SRI in the same group of patients [31]. Finnish and Greek authors enrolled a mixed group of patients receiving LTOT and NIV to validate their SRI [14,16].…”

The Italian Version of the Severe Respiratory Insufficiency Questionnaire

“…Therefore, this would need to be done in the next future. However, most of the translations, even though not all, as listed above, have undergone validation studies, and all of these studies have shown high psychometric properties [11][12][13][14][15][16][17][18][19][20][21][22]. In addition, the Italian version has been created following a highly professional translational process.…”

Development of Urdu version of Chronic Respiratory Disease Questionnaire Self-Administered Standardized (CRQ-SAS); validity and reliability analysis in COPD patients

“…It has 20 items divided into four categories: dyspnea (5 items), fatigue (4 items), emotional function (7 items), and mastery (4 items). Patients score their experience on a 7-point Likert scale ranging from 1 (highest impairment) to 7 (no impairment) when completing this instrument [ 14 , 15 ]. Each domain’s total score was divided by the number of items answered, providing a possible score ranging from one to seven, with larger numbers indicating greater function and vice versa [ 16 ].…”