Page 119 - THE DUTCH TALKING TOUCH SCREEN QUESTIONNAIRE

Evoluation of the Dutch and Turkish version
In the past years a prototype of a mHealth application, called the Dutch Talking Touch Screen Questionnaire (DTTSQ), was developed in The Netherlands. The idea of developing a talking touchscreen was inspired on the work of Hahn and Cella [30].The aim of developing the DTTSQ was to enable Dutch physical therapy patients to autonomously complete a user-friendly health related questionnaire regardless of their literacy and digital skills. Because it is not to be expected that all physical therapy patients own a tablet computer, the DTTSQ is meant to be presented in a physical therapy practice on a tablet computer that is owned by the physical therapy practice concerned. Patients are asked to complete the DTTSQ in the waiting room of the physical therapist prior to their first visit. The development of the prototype of the DTTSQ, which runs on a tablet computer, was described in detail by Cremers et al. in 2015 [31]. Prior to the current study the prototype was only tested in a sample outside of the physical therapy context.
The aim of this study was to test the prototype of the DTTSQ within the physical therapy context to see what parts of the prototype needed adjustment in order for it to be user-friendly for physical therapy patients regardless of their level of experience with operating mobile technology.
The research question underlying this study was: What is the usability of the prototype of the DTTSQ for physical therapy patients with different levels of experience in using mobile technology?
METHODS
Design
A qualitative descriptive study was carried out. Observational data on the way participants operated the DTTSQ was collected through The Three-Step Test-Interview (TSTI) method [32]. This method includes both think-aloud and retrospective probing techniques.
Definitions
Usability was defined by the International Standards Organization (ISO) as “the effectiveness, efficiency and satisfaction with which specified users can achieve goals in particular environments” [33]. Effectiveness is the accuracy and completeness with which users achieve certain goals [34]. In this study problem rates and severity
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