Universial – focused on the entire population as the target – prevention through reducing risk and enhancing health

Selective – high risk groups, though not all members bear risks – prevention through reducing risks

Indicated – symptomatic and marked high risk individuals – interventions to prevent full-blown disorders or adverse outcomes

Primary – before condition occurs (reduce or eliminate causative risk factors)

Secondary – during development of condition (early identification through screening and treatment)

Tertiary – after condition has occurred (prevent sequelae)