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. 2022 Feb 8;12(1):59–64. doi: 10.3390/nursrep12010007

Table 1.

Schematic representation of the study steps toward the creation of a dedicated tool to measure patients’ reported experience during endoscopic ultrasound (EUS).

Step Objective
(A) Tool creation
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    Create draft “patient reported measure of EUS” (PREUS) questionnaire based on literature review.
(B) Face and Content Validity
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    Submit “PREUS” to 7 experts in the field and to “expert” patients.

  • -

    Calculate content validity index (CVI).

  • -

    Modify accordingly.
(C) Ranking
  • -

    Evaluate the relevance of items for 50 outpatients undergoing EUS (scale from 1 to 10).

  • -

    Evaluate the relevance of questions by health care professionals (HCPs) to measure the agreement with patients.

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    Calculate Cronbach’s alpha.

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    Create a final draft of the questionnaire.
(D) Questionnaire administration and validity testing
  • -

    Submit “PREUS” to a further 100 consecutive outpatients undergoing EUS to test compliance and validity.