Frequently Asked Questions

What is evidence-based public health?
What is an intervention?
Where do interventions take place?
Who develops interventions?
How do interventions create change?
What is Intervention MICA?

When do I use Intervention MICA?

How do I use Intervention MICA?
What is the priority population?

What is evidence-based public health?
Evidence-based public health is a process that uses scientific and practical evidence to guide decisions about how to identify and prioritize the most important health concerns in a community as well as develop interventions to address these priority areas.

What is an intervention?
Interventions come in many shapes and sizes. An intervention might be a program, a policy change, an environmental change, a campaign, a new partnership or a different practice or way of doing things. What these things all have in common is that they create change. In public health, these changes are meant to influence individual behaviors and health as well as the environments to support those individuals.

Where do interventions take place?
Interventions can be used to create change in different settings, including: communities, worksites, schools, health care organizations, faith-based organizations or at home. Interventions may be most effective when they include multiple settings. Even though it can be more challenging to plan an intervention for a variety of different settings, these interventions often have an impact that lasts longer and affects a larger number of individuals.

Who develops interventions?
Interventions can be developed by individuals but it is often best to involve several groups or partners. In thinking about groups to include, it is important to remember to involve the individuals who may be affected by the intervention in the planning of the intervention. These individuals can provide valuable insight into the intervention strategies that may work best to create change.

How do interventions create change?
Public health interventions create change through intervention strategies, including:

  • influencing individuals’ knowledge, attitudes and beliefs;
  • offering promotions, rewards or incentives;
  • providing social support;
  • shaping environments and policies; and
  • using clinical treatments.

What is Intervention MICA?
Intervention MICA is an interactive database designed to help health practitioners and community members plan, implement and evaluate interventions to improve health in their communities.

The Intervention MICA was developed with input from experts in the field, evidence from the scientific literature, and evidence from other resources. See Background and Development for more information about the creation of Intervention MICA.

When do I use Intervention MICA?
Intervention MICA provides an entire section with tips and information to help you get ready to plan and implement (or put into action) your intervention. Go to Readiness and Preparation for more information.

How do I use Intervention MICA?
Intervention MICA guides the user through the process of planning, implementing (or putting to action) and evaluating intervention strategies in a variety of topic areas (see Intervention Topics). Go to Creating Your Intervention for more information.

For assistance in using CHIR/Intervention MICA to plan an intervention, print the User’s Guide and follow it as you explore the web site.

What is the priority population?
The priority population is the group that will be affected by your intervention. For example, you may wish to influence employees of an organization, children at local schools, patients receiving health care services in a health care system, residents of a specific neighborhood or a larger community defined by a metropolitan area or rural county.

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