Dimensionality of the system usability scale among professionals using internet-based interventions for depression: a confirmatory factor analysis

Autor: Claus Duedal Pedersen, Christiaan Vis, Heleen Riper, Didem Gokcay, Anne Etzelmueller, Bárbara Moles, Ane Fullaondo Zabala, Mette Maria Skjøth, Jeroen Ruwaard, David Daniel Ebert, Anneke van Schaik, Mayke Mol, Burçin Ünlü Ince, Enrico Zanalda, Jan Smit, Els Dozeman, Teresa Mora, Luisa Peleteiro Pensado, Alessio Russi, Kim Mathiasen, Jordi Piera-Jimenez, Ylenia Sacco
Přispěvatelé: Psychiatry, APH - Mental Health, APH - Methodology, APH - Global Health, Clinical Psychology
Rok vydání: 2020
Předmět:
Zdroj: Mol, M, van Schaik, A, Dozeman, E, Ruwaard, J, Vis, C, Ebert, D D, Etzelmueller, A, Mathiasen, K, Moles, B, Mora, T, Pedersen, C D, Skjøth, M M, Pensado, L P, Piera-Jimenez, J, Gokcay, D, Ince, B Ü, Russi, A, Sacco, Y, Zanalda, E, Zabala, A F, Riper, H & Smit, J H 2020, ' Dimensionality of the system usability scale among professionals using internet-based interventions for depression : a confirmatory factor analysis ', BMC Psychiatry, vol. 20, no. 1, 218, pp. 218 . https://doi.org/10.1186/s12888-020-02627-8
BMC Psychiatry
BMC Psychiatry, Vol 20, Iss 1, Pp 1-10 (2020)
BMC Psychiatry, 20(1):218. BioMed Central
Mol, M, van Schaik, A, Dozeman, E, Ruwaard, J, Vis, C, Ebert, D D, Etzelmueller, A, Mathiasen, K, Moles, B, Mora, T, Pedersen, C D, Skjøth, M M, Pensado, L P, Piera-Jimenez, J, Gokcay, D, Ince, B Ü, Russi, A, Sacco, Y, Zanalda, E, Zabala, A F, Riper, H & Smit, J H 2020, ' Dimensionality of the system usability scale among professionals using internet-based interventions for depression : a confirmatory factor analysis ', BMC Psychiatry, vol. 20, no. 1, 218 . https://doi.org/10.1186/s12888-020-02627-8
Mol, M, van Schaik, A, Dozeman, E, Ruwaard, J, Vis, C, Ebert, D D, Etzelmueller, A, Mathiasen, K, Moles, B, Mora, T, Pedersen, C D, Skjøth, M M, Pensado, L P, Piera-Jimenez, J, Gokcay, D, Ince, B Ü, Russi, A, Sacco, Y, Zanalda, E, Zabala, A F, Riper, H & Smit, J H 2020, ' Dimensionality of the system usability scale among professionals using internet-based interventions for depression : a confirmatory factor analysis ', BMC Psychiatry, vol. 20, 218 . https://doi.org/10.1186/s12888-020-02627-8
ISSN: 1471-244X
DOI: 10.1186/s12888-020-02627-8
Popis: Background The System Usability Scale (SUS) is used to measure usability of internet-based Cognitive Behavioural Therapy (iCBT). However, whether the SUS is a valid instrument to measure usability in this context is unclear. The aim of this study is to assess the factor structure of the SUS, measuring usability of iCBT for depression in a sample of professionals. In addition, the psychometric properties (reliability, convergent validity) of the SUS were tested. Methods A sample of 242 professionals using iCBT for depression from 6 European countries completed the SUS. Confirmatory Factor Analysis (CFA) was conducted to test whether a one-factor, two-factor, tone-model or bi-direct model would fit the data best. Reliability was assessed using complementary statistical indices (e.g. omega). To assess convergent validity, the SUS total score was correlated with an adapted Client Satisfaction Questionnaire (CSQ-3). Results CFA supported the one-factor, two-factor and tone-model, but the bi-factor model fitted the data best (Comparative Fit Index = 0.992, Tucker Lewis Index = 0.985, Root Mean Square Error of Approximation = 0.055, Standardized Root Mean Square Residual = 0.042 (respectively χ2diff (9) = 69.82, p 2diff (8) = 33.04, p s = .49, p s = .46, p s = .38, p Conclusions Although the SUS seems to have a multidimensional structure, the best model showed that the total sumscore of the SUS appears to be a valid and interpretable measure to assess the usability of internet-based interventions when used by professionals in mental healthcare.
Databáze: OpenAIRE
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