Validity and reliability assessment of the Brazilian version of the Faces Pain Scale-Revised

The Faces Pain Scale-Revised (FPS-R) is among the most commonly used measures of pain intensity in clinical and research settings. Little evidence exists about the Brazilian version of this scale. The purpose of the present study was to examine the validity and reliability of the Brazilian version of the FPS-R. The sample comprised 214 children, 6 to 10 years of age. In the first phase of the study, the children ranked the faces of the FPS-R according to pain intensity, and the faces were presented in all possible pair combinations (content validity). All six faces were correctly ranked by 47%...