Lai X, Zhu H, Du H, Wang J, Bo L, Huo X. Reliability and Validity of the Chinese Mandarin Version of the Swallowing Quality of Life Questionnaire.
Dysphagia 2020;
36:670-679. [PMID:
32865626 DOI:
10.1007/s00455-020-10181-4]
[Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/24/2020] [Indexed: 10/23/2022]
Abstract
Swallowing disorders can adversely affect quality of life (QOL). To develop the Chinese version of the Swallowing Quality of Life Questionnaire (ChSWAL-QOL) and evaluate its reliability and validity, the ChSWAL-QOL was generated by forward translation of the original SWAL-QOL, backward translation, cultural adaptation, and revision using the Delphi method. The ChSWAL-QOL was administered to 376 patients with dysphagia treated at Peking Union Medical College Hospital between November 1, 2017 and December 31, 2018. Reliability was evaluated using Cronbach's α and test-retest reliability. Content validity was assessed using the content validity index (CVI). Structural validity was evaluated by exploratory factor and confirmatory factor analyses. The 44-item, 11-dimension of ChSWAL-QOL was considered semantically relevant, clearly expressed and easy to understand in a preliminary study. The final analysis included 360 of 376 questionnaires (95.7%). Cronbach's α was 0.906 for the whole scale and ranged from 0.815 to 1.000 for the individual dimensions, and the test-retest reliability was 0.847, indicating that the ChSWAL-QOL had excellent internal consistency. CVI was 0.964 overall and ranged from 0.870 to 1.000 for the individual dimensions. Exploratory factor analysis identified a dysphagia-related component (psychological burden, feeding duration, swallowing symptoms, eating desire, communication, feeding fear, mental health, and social function) and a generic component (fatigue and sleep) explaining 52.8% and 10.8% of the variance, respectively. The ChSWAL-QOL has excellent reliability and validity. This scale could be used as a tool to assess the QOL of patients with dysphagia in mainland China.
Collapse