Department of Nursing and Physiotherapy, University of Lleida, Lleida, Spain.
Research Group of Health Care, IRB Lleida, Institute for Biomedical Research Dr. Pifarré Foundation, Lleida, Spain.
PLoS One. 2023 Jan 31;18(1):e0281197. doi: 10.1371/journal.pone.0281197. eCollection 2023.
This study describes the development of a questionnaire for assessing the usability of assistive technologies accessible to people with neurological diseases.
A Delphi study was conducted to identify relevant items for the questionnaire. After that, the content validity was addressed to identify the essential items. Once the questionnaire was designed following the results of the Delphi study and content validity, the reliability, validity, and the Rasch model of the questionnaire were examined.
Two rounds of the Delphi study were carried out. A total of 73 participants (42 experts and 31 users) participated in round 1, and 59 people (27 experts and 32 users) in round 2. A total of 53 and 29 items were identified in rounds 1 and 2, respectively. In the content validity, we found nine items above the threshold of 0.58. Finally, ten items were included in the questionnaire. Fifty-one participants participate in the reliability and validity of the questionnaire. The internal consistency reliability of the questionnaire analyzed by Cronbach's Alpha was α = 0,895. There was moderate to considerable concordance among our questionnaire items test-retest in the Kappa coefficient and a strong association between test-retest in the Spearman's coefficient ρ = 0.818 (p<0,001). The intraclass correlation coefficient was 0,869 with a 95% confidence interval (0,781;0,923). There was a strong correlation between the total scores of the new questionnaire and other validated questionnaires analyzed with Spearman's coefficient ρ = 0.756 (p<0,001). The ten items demonstrated a satisfactory fit to the Rasch model.
The present study suggested that the new questionnaire is a reliable 10-item usability questionnaire that allows subjective and quick assessment of the usability of assistive technologies by people with neurological diseases.
本研究旨在开发一种评估神经疾病患者可及的辅助技术可用性的问卷。
采用德尔菲法确定问卷的相关项目，然后进行内容效度以确定基本项目。在德尔菲研究和内容效度的结果之后，设计了问卷，然后检查了问卷的信度、效度和 Rasch 模型。
进行了两轮德尔菲研究。共有 73 名参与者（42 名专家和 31 名用户）参加了第一轮，59 人（27 名专家和 32 名用户）参加了第二轮。第一轮和第二轮分别确定了 53 项和 29 项。在内容效度方面，我们发现 9 项高于 0.58 的阈值。最终，问卷包含 10 项。51 名参与者参与了问卷的信度和效度。Cronbach's Alpha 分析的问卷内部一致性信度为α=0.895。我们的问卷项目测试-重测的 Kappa 系数之间存在中度至相当大的一致性，Spearman 系数 ρ=0.818（p<0.001）之间存在强烈的关联。重测的组内相关系数为 0.869，95%置信区间为 0.781；0.923。新问卷的总分与其他经验证的问卷之间存在强烈的相关性，Spearman 系数 ρ=0.756（p<0.001）。这 10 个项目与 Rasch 模型拟合良好。
本研究表明，新问卷是一种可靠的 10 项可用性问卷，可让神经疾病患者对辅助技术的可用性进行主观和快速评估。
