CHAPTER 16 Principles and Practice of Secondary Prevention Negative Record esult Start treatmen treatment reevaluate Positive response Continue treatment Figure 16-1 The pro cess of able 16-1 Objectives of Screening Programs B. Minimum Requirements for Community Screening Programs requirements for establishing a safe, ethical Diseas ive screening program fall into the following ment to prevent Hypertension Disease requirements Screening test requirements infection and a Health care system requirements revent Change in diet and i lea net, an extensive population-wide screening program may be ina propriate. Table 16-2 outlines these requirements in four common screening programs, for hypertension, high choles Behavioral terol, cervical cancer, and ovarian cancer. as further discussed unsafe sexual in Application of Minimum Screening Requirements to Sp practices Environmental Change in occupation Chronic obstructive cific Programs sease from work in a dusty trade L. Disease Requirements Metabolic Elevated seru 1. The disease must be serious(i.e, produce significant mor- bidity or mortality), or there is no reason to screen in the first place. 2. Even if a disease is serious, there must be an effective py for the disease if it is detected of alue unless there is a good chance that detecting the