Cross-Cultural Adaptation and Validation of the Italian Version of SWAL-QOL

Daniela Ginocchio, Enrico Alfonsi, F. Mozzanica, Anna Rosa Accornero, Antonella Bergonzoni, Giulia Chiarello, Nicoletta de Luca, Daniele Farneti, Marilia Simonelli, Paola Calcagno, Valentina Turroni, Antonio Schindler

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Abstract

The aim of the study was to evaluate the reliability and validity of the Italian SWAL-QOL (I-SWAL-QOL). The study consisted of five phases: item generation, reliability analysis, normative data generation, validity analysis, and responsiveness analysis. The item generation phase followed the five-step, cross-cultural, adaptation process of translation and back-translation. A group of 92 dysphagic patients was enrolled for the internal consistency analysis. Seventy-eight patients completed the I-SWAL-QOL twice, 2 weeks apart, for test–retest reliability analysis. A group of 200 asymptomatic subjects completed the I-SWAL-QOL for normative data generation. I-SWAL-QOL scores obtained by both the group of dysphagic subjects and asymptomatic ones were compared for validity analysis. I-SWAL-QOL scores were correlated with SF-36 scores in 67 patients with dysphagia for concurrent validity analysis. Finally, I-SWAL-QOL scores obtained in a group of 30 dysphagic patients before and after successful rehabilitation treatment were compared for responsiveness analysis. All the enrolled patients managed to complete the I-SWAL-QOL without needing any assistance, within 20 min. Internal consistency was acceptable for all I-SWAL-QOL subscales (α > 0.70). Test–retest reliability was also satisfactory for all subscales (ICC > 0.7). A significant difference between the dysphagic group and the control group was found in all I-SWAL-QOL subscales (p <0.05). Mild to moderate correlations between I-SWAL-QOL and SF-36 subscales were observed. I-SWAL-QOL scores obtained in the pre-treatment condition were significantly lower than those obtained after swallowing rehabilitation. I-SWAL-QOL is reliable, valid, responsive to changes in QOL, and recommended for clinical practice and outcome research.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalDysphagia
DOIs
Publication statusAccepted/In press - Jul 21 2016

Keywords

  • Deglutition
  • Dysphagia
  • Outcome
  • Self-assessment
  • Swallowing disorders

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Gastroenterology
  • Speech and Hearing

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    Ginocchio, D., Alfonsi, E., Mozzanica, F., Accornero, A. R., Bergonzoni, A., Chiarello, G., de Luca, N., Farneti, D., Simonelli, M., Calcagno, P., Turroni, V., & Schindler, A. (Accepted/In press). Cross-Cultural Adaptation and Validation of the Italian Version of SWAL-QOL. Dysphagia, 1-9. https://doi.org/10.1007/s00455-016-9720-z