[Practice guideline 'Management of patients with mild traumatic head/brain injury' in the Netherlands].

Objective: To evaluate the effect of the revised practice guideline 'Management of patients with mild traumatic head/brain injury' (MHI) in the Netherlands using the number of CT scans of the cerebrum, number of hospital admissions, and the number of intracranial traumatic findings on CT scan.

Design: Retrospective before-and-after study.

Method: A structured chart review over the 3-month period considerable time after implementation of the MHI guideline (study period) was compared with the 3-month-period before its introduction (control period).