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Randy Neil Biostats 31: USMLE Biostats Shorts - Less than 1 minute

Episode source Open Notion notes

Episode Notes

USMLE purpose: Rapid-review a single biostats shortcut in Anki-card style.

How to use this page

  1. Recall the no-effect value.
  2. Check the confidence interval.
  3. Decide whether the result is significant.
Episode metadata
FieldDetails
EpisodeRandy Neil Biostats 31
TopicBiostats short
Runtime1 min
Published2024-02-04
SourceOpen YouTube video

One-liner

For RR, OR, and HR, a confidence interval that crosses 1 is not statistically significant.

Rapid recall: RR 0.8 with CI 0.6–1.2?

Not statistically significant because the CI crosses 1.

Mini-check

For mean differences, the no-effect value is 0 instead of 1.

Extra practice

A hazard ratio is 0.75 with 95% CI 0.50–1.20. Is the result statistically significant?

Reveal answer & explanation

No. The confidence interval crosses 1, so the result is not statistically significant.