What are the three levels of care depicted in the Intervention Wheel, and how might a PHD PHN apply them to reduce tobacco use?

The three levels of care are individual, community, and systems. A PHD PHN could apply them to reduce tobacco use by counseling a pregnant woman individually, teaching tobacco cessation classes to teens at the community level, and directing systems-level interventions that affect the broader population's health.

The Intervention Wheel depicts interventions delivered at three levels: individual, community, and systems. For tobacco use reduction, an individual-level intervention would be a PHD PHN counseling one pregnant woman about stopping smoking. A community-level intervention could be group education, such as tobacco cessation classes targeting teens. Systems-level interventions are directed at changing conditions that affect the health of whole populations and may have the greatest impact. These three levels illustrate how PHD PHNs use multiple interventions directed at different levels to address a single public health issue.