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Multicenter Study
. 2020 May 7;20(1):130.
doi: 10.1186/s12890-020-1171-5.

Validation of the Hungarian version of the SRI Questionnaire

Luca Valko  1 , Szabolcs Baglyas  2 , Laszlo Kunos  3 , Attila Terray-Horvath  4 , Andras Lorx  2 , Janos Gal  2 , Wolfram Windisch  5
Affiliations
Multicenter Study

Validation of the Hungarian version of the SRI Questionnaire

Luca Valko et al. BMC Pulm Med. .

Abstract

Background: Home mechanical ventilation is a reliable treatment for patients suffering from chronic respiratory failure, improving survival and quality of life. Prevalence has been increasing worldwide as a result of evolving technical possibilities, telemedicine and improving national guidelines. Projects to establish a national guideline and registry for patients treated with home mechanical ventilation are currently under way in Hungary and our aim was to validate a quality of life questionnaire suited for evaluation and follow up in this specific patient group. The Severe Respiratory Insufficiency Questionnaire (SRI) is a quality of life tool designed to evaluate patients receiving home mechanical ventilation and has been validated both in patient groups receiving invasive and noninvasive ventilation.

Methods: The Hungarian version of the SRI was created using the translation-backtranslation method, which was then tested for validity, viability and reliability in a cohort involving patients from three centers, receiving long-term home mechanical ventilation for chronic respiratory failure through an invasive or noninvasive interface. Patient data was collected (demographic data, lung function test, arterial blood gas, ventilation settings) and quality of life was measured with the previously validated SF-36 and newly created Hungarian SRI Questionnaires at two time points.

Results: One hundred four patients receiving home mechanical ventilation were enrolled. The time to complete the SRI Questionnaire was 8.6 (±3.1) minutes, 69.2% questionnaires were self-administered. Exploratory factor analysis explained 73.8% of the variance of the questionnaire, but resulted in 13 scales. We found correlations between the SRI subscale scores to corresponding scales of the previously validated general quality of life survey SF-36. The Cronbach alpha coefficient was 0.928 for the Summary Scale of the SRI Questionnaire, proving high internal consistency. Reproducibility was high for most scales, resulting in a high overall correlation for the summary score (0.877, p < 0.001).

Conclusions: The Hungarian version of the SRI Questionnaire is a viable, valid, reliable and reproduceable quality of life tool applicable for patients treated with home mechanical ventilation.

Keywords: Home mechanical ventilation; Quality of life; Questionnaire validation.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Box plot of SRI subscales in different diagnostic groups. Boxes represent means, whiskers represent standard error. COPD – chronic obstructive pulmonary disease, RCWD – restrictive chest wall disease, OHS/OSAS – obesity hypoventilation syndrome/obstructive sleep apnea syndrome, NMD – neuromuscular disease, SRI-RC - respiratory complaints, SRI-PF - physical functioning, SRI-AS - attendant symptoms and sleep, SRI-SR - social relationships, SRI-AX - anxiety, SRI-WB - psychosocial well-being, SRI-SF - social functioning, SRI-SS - summary scale
Fig. 2
Fig. 2
Boxplot of subscales in patients according to interface. Boxes represent means, whiskers represent standard error. SRI-RC - respiratory complaints, SRI-PF - physical functioning, SRI-AS - attendant symptoms and sleep, SRI-SR - social relationships, SRI-AX - anxiety, SRI-WB - psychosocial well-being, SRI-SF - social functioning, SRI-SS - summary scale
Fig. 3
Fig. 3
Scree plot for the exploratory factor analysis
See this image and copyright information in PMC

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