One of the primary reasons for installing metal detectors is to reduce the incidence of violence. Epidemiological studies often focus on the effectiveness of interventions in preventing harm. In schools, for example, metal detectors aim to deter students from bringing weapons. Some studies indicate a reduction in weapon-related incidents, suggesting that metal detectors can indeed lower the risk of school violence. However, the evidence is mixed, and some studies suggest that metal detectors alone are not sufficient without accompanying measures such as counseling and educational programs.
