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

Table 7 Convergent validity of SUS and CSQ-3

Item	Spearman correlation with SUS total score (CI)
CSQ1. Have the needs been met?	0.49 (0.39 to 0.58)^a
CSQ2. Overall satisfaction?	0.46 (0.35 to 0.55)^a
CSQ3. Provide treatment again?	0.38 (0.26 to 0.48)^a

ISSN: 1471-244X