Screening

SPM

Screening

Exam Yield

Probability of getting 1 Question from this chapter 159%

This Chapter is an absolute delight to read and solve.

Logic and simple Mathematics makes this chapter an easy source of upto 8 marks.

Question Pattern

This chapter is interesting from the Exam perspective 👍 because, most of the questions involve awareness of the different definitions, and ability to correctly identify the numerator and denominator from a given scenario.

Once you identify the above, it’s a question of knowing the correct formula and applying simple mathematics.

Quite a few question scenarios from Receiver operator characteristic curve.

Recent Questions

Questions on this chapter from recent NEET and AIIMS examinations have been about
  • Multiphasic Screening
  • Test in series vs Test in parallel
  • Definition – Diagnostic Powers
  • Definition – Predictive accuracy
  • Specificity – Signifies?
  • Sensitivity numerator?
  • What does a positive result for a sensitive test mean?
  • How prevalence affects the different parameters?
  • Definition – Validity
  • Definition – Reliability
  • Receiver operator characteristic curve
  • Natural history & its definitions
  • Prospective vs Prescriptive Screening

Suggested Revision

The following topics should be revised without fail

  • Screening test -Ideal Characteristics
  • Definition – Lead time
  • Repeatability of screening test
  • Formula for
    • Sensitivity
    • Specificity
    • Positive predictive value
    • Negative Predictive value
  • False negative vs Sensitivity
  • NPV vs Sensitivity
  • PPV  vs Specificity

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