ScalentricCNA for Immunization Decision-Making

Module 27 ยท How do you run a sensitivity analysis?

Turn the dials and watch what happens

By the end of this module you will be able to
  • Run a quick sensitivity check by hand.
  • Compare findings across two thresholds.
  • Report fragility honestly.

Even without a special package, you can run a quick sensitivity check by hand. Run CNA at a couple of different thresholds and see whether the story stays the same or suddenly changes its tune.

sensitivity.R
# strict
cna(immunization, outcome = "LowCov", con = 0.9, cov = 0.9)

# relaxed
cna(immunization, outcome = "LowCov", con = 0.85, cov = 0.85)

If the same pattern survives both runs, your confidence quietly goes up. If a tiny change rewrites the whole solution, treat the finding as fragile and say so plainly in your report. Honesty here saves embarrassment later.

Reflect

Try turning the dials.

  • Does your pathway survive both a strict and a relaxed threshold?
  • If it changes, how would you describe that honestly in a report?