Diagnostic and Screening Tests

Question 1

The screening and diagnostic test model in clinical medicine

Answer 1

Question 2

The two types of preclinical disease

Answer 2

• Asymptomatic disease
• Unrecognized health risks

Question 3

Components of screening

Answer 3

• Method of screening
• Condition screened for
• Target population of screening
• Purpose of screening

Question 4

Potential sources of harm that must be taken into account for screening tests

Answer 4

• Physical harm (including pain)
• Psychological harm (especially labeling and self-fulfilling prophecies)
• Harm from early therapy
• Statistical harm (The effect of false positives and its relationship with the above)