- (1) Grey highlighted boxes with R1 represent the assessor who critiqued all articles, and R2 is the second assessor who critiqued the first set of articles to ensure consistency of rating; (2) A 4-point Likert scale where 1 is “strongly agree” and 4 is “strongly disagree” is used to determine if instrument developers report required information, suitable methods and findings that reflect good instrument function [57]. The overall assessment and recommendation ranks according to most highly recommended