I think that this article would be useful for you:
Penelo, E, Estévez‐Guerra, GJ, Fariña‐López, E. Validity and measurement invariance of the Physical Restraint Use Questionnaire (PRUQ) in nursing staff. J Clin Nurs. 2018; 27: e1179– e1188. https://doi.org/10.1111/jocn.14253