Offering a parenting program only to high-risk groups may impact on that relatively small section of the community. But population trials in the United States and Australia have shown that using Triple P's public-health approach to parenting support can have significant impact at a community-wide level including:

• Reduced rates of hospital and ER admissions from child abuse injuries (1)
• Slowed rate of substantiated child maltreatment cases (1)
• Reduction in significant mental health problems in children (2)
• Decrease in parents' levels of depression, stress and other emotional distress (2)
• Reduction in the risk of children developing later problems such as depression, by decreasing family risk factors (2)
• Fewer foster care and out-of-home placements for children (1)

(1) Prinz, R.J., Sanders, M.R., Shapiro, C.J., Whitaker, D.J., & Lutzker, J.R. (2009). Population-based prevention of child maltreatment: The U.S. Triple P system population trial. Prevention Science, 10(1), 1-12.

(2) Sanders, M.R., Ralph, A., Sofronoff, K., Gardiner, P., Thompson, R., Dwyer, S., & Bidwell, K. (2008). Every Family: A population approach to reducing behavioral and emotional problems in children making the transition to school. Journal of Primary Prevention, 29, 197-222.