Screening – a form of needs assessment
		n 3 types of screening – 1.  Population-based – Define a population – Endeavor to screen the entire population – 2.  Targeted population – Aim at a “high risk” segment of the population – Gender, age, behavior, health-related characteristic – 3.  Opportunistic population            -- Offer screening test for unsuspected disorder            -- At time when person presents to clinician for another        reason
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