Once isn't enough when measuring staff competence.
Certain aspects of evaluating competence are ongoing, at the very least, once within the 3-year accreditation cycle.
Herringer
John M
JM
Standards Interpretation, JCAHO, Oakbrook Terrace, Ill., USA.
D002983:Clinical Competence / Q000592:standards*; D004650:Employee Performance Appraisal / Q000379:methods*; D006801:Humans; D009718:Nurse Administrators; D009740:Nursing Staff / Q000193:education / Q000592:standards*