Bladder ultrasound: evidence of content validity of a checklist for training nurses.

Objectives: to develop and analyze evidence of content validity of a checklist for training nurses in measuring bladder volume through ultrasound.

Methods: a methodological study, consisting of three stages: literature review; instrument item preparation; and analysis of evidence of content validity. The Content Validity Index (CVI) and Gwet's AC2 were used for content validity analyses.