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Data were collected using a questionnaire developed by Held (1993).
The third instrument is a questionnaire developed by researchers to measure students' self-efficacy.
Another questionnaire that is commonly used in Europe is the questionnaire developed by the Picker Institute.
Five items were borrowed from the questionnaire developed by Oude Groote Beverborg et al. (2015).
The OMAS is a patient-reported questionnaire, developed to evaluate function after ankle fracture.
To gauge player perceptions we used AttrakDiff, a questionnaire developed by Hassenzahl [3].
A validated and reliable self-administered questionnaire developed by the investigators was used in the study.
Design: Parents were surveyed using a closed-format questionnaire developed in earlier work.
The online questionnaire developed for the initial phase of the study was open for the duration of 2012.
Data were collected in October 2014 via a structured questionnaire developed for the study, adapting those used in previous studies.
The WHOQoL-BREF is a 26-item questionnaire developed from the original 100-item questionnaire the WHOQoL-100.
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