96 Chapter 4 4 caregiver pairs, of which 50 returned the questionnaire (four questionnaires were excluded because of missing data (i.e. >27 questions unanswered). The overall mean age was 8.2 years (SD 2.8), the majority was boy (n = 28; 61%) and most children had to draw blood during the appointment (n = 26; 57%) Children who did not need to draw blood had other physical examinations (e.g. ECG or cardiac ultrasound) or only a consultation. Five key themes were identified from our qualitative data, which were then triangulated and complemented with the quantitative descriptive data from the questionnaires. Each theme is described below, integrating both qualitative and quantitative data. Descriptive statistics for usability and user-experience are displayed in Table 2 and Figure 5 Table 2. Descriptive statistics (n=46) on overall score on the system usability scale (SUS) and User-experience Questionnaire short version (UEQ_S) Min Max mean ± SD SUS 25 100 71.32 ±17.80 UEQ_S -.49 2.63 1.49 ± .95 Pragmatic -2.50 3.00 1.31 ± 1.28 Hedonic -2.75 3.00 1.49 ± 1.37 SUS, System Usability Scale; UEQ_S: User-Experience Questionnaire Short version; SD, standard deviation
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