80 Chapter 5 Figure 5.2: Timing of the before (T1) and after (T2) questionnaires. Data analysis SPSS version 28.0.0.0 was used for analysis. If the assumptions for parametric testing were met, before and after interest scores were compared using Paired t-tests. Ethical approval The study was submitted to the local scientific board of Northwest Clinics, the Netherlands, which considers all study proposals within the institution. Since the study does not fall within the scope of the Dutch Medical Research Involving Human Subjects Act (section 1.b WMO, 26th February 1998), the local scientific board of Northwest Clinics approved the study and waived the need for approval by an Ethics Committee/Institutional Review Board. All participants received a research information letter and signed an informed consent form. Participation was voluntary. Written informed consent was obtained from all participants for using their anonymous data in our study. All methods were performed according to the relevant guidelines and regulations. RESULTS One hundred and twenty-nine students filled out the T1 questionnaire, and sixty-two (48%) filled out the T2 questionnaire. Two completed questionnaires lacked a research identification number, so sixty students were included in the final analysis.
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