%0 Journal Article
%@ 2561-326X
%I JMIR Publications
%V 7
%N 
%P e42219
%T A Tablet-Based Aphasia Assessment System “STELA”: Feasibility and Validation Study
%A Inamoto,Yoko
%A Mukaino,Masahiko
%A Imaeda,Sayuri
%A Sawada,Manami
%A Satoji,Kumi
%A Nagai,Ayako
%A Hirano,Satoshi
%A Okazaki,Hideto
%A Saitoh,Eiichi
%A Sonoda,Shigeru
%A Otaka,Yohei
%+ Deparment of Rehabilitation Medicine, Hokkaido University Hospital, Kita 14, Nishi 5, Kita-ku, Sapporo, 060-8648, Japan, 81 11 706 6065, masahikovn@gmail.com
%K aphasia
%K tablet
%K assessment
%K validity
%K internal consistency
%K psychometric
%K psychological health
%K stress
%K digital mental health intervention
%K digital health intervention
%K heuristic evaluation
%K system usability
%K auditory comprehension
%K reading comprehension
%K naming and sentence formation
%K repetition
%K reading aloud
%K Cronbach α
%K speech
%D 2023
%7 8.2.2023
%9 Original Paper
%J JMIR Form Res
%G English
%X Background: There is an extensive library of language tests, each with excellent psychometric properties; however, many of the tests available take considerable administration time, possibly bearing psychological strain on patients. The Short and Tailored Evaluation of Language Ability (STELA) is a simplified, tablet-based language ability assessment system developed to address this issue, with a reduced number of items and automated testing process. Objective: The aim of this paper is to assess the administration time, internal consistency, and validity of the STELA. Methods: The STELA consists of a tablet app, a microphone, and an input keypad for clinician’s use. The system is designed to assess language ability with 52 questions grouped into 2 comprehension modalities (auditory comprehension and reading comprehension) and 3 expression modalities (naming and sentence formation, repetition, and reading aloud). Performance in each modality was scored as the correct answer rate (0-100), and overall performance expressed as the sum of modality scores (out of 500 points). Results: The time taken to complete the STELA was significantly less than the time for the WAB (mean 16.2, SD 9.4 vs mean 149.3, SD 64.1 minutes; P<.001). The STELA’s total score was strongly correlated with the WAB Aphasia Quotient (r=0.93, P<.001), supporting the former’s concurrent validity concerning the WAB, which is a gold-standard aphasia assessment. Strong correlations were also observed at the subscale level; STELA auditory comprehension versus WAB auditory comprehension (r=0.75, P<.001), STELA repetition versus WAB repetition (r=0.96, P<.001), STELA naming and sentence formation versus WAB naming and word finding (r=0.81, P<.001), and the sum of STELA reading comprehension or reading aloud versus WAB reading (r=0.82, P<.001). Cronbach α obtained for each modality was .862 for auditory comprehension, .872 for reading comprehension, .902 for naming and sentence formation, .787 for repetition, and .892 for reading aloud. Global Cronbach α was .961. The average of the values of item-total correlation to each subscale was 0.61 (SD 0.17). Conclusions: Our study confirmed significant time reduction in the assessment of language ability and provided evidence for good internal consistency and validity of the STELA tablet-based aphasia assessment system. 
%M 36753308
%R 10.2196/42219
%U https://formative.jmir.org/2023/1/e42219
%U https://doi.org/10.2196/42219
%U http://www.ncbi.nlm.nih.gov/pubmed/36753308