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Episode Notes

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

How to use this page

  1. Recognize the curve.
  2. Identify the time or survival level being asked.
  3. Move horizontally/vertically on the graph.
Episode metadata
FieldDetails
EpisodeRandy Neil Biostats 33
TopicBiostats short
Runtime1 min
Published2024-02-04
SourceOpen YouTube video

One-liner

A stair-step survival curve is a Kaplan-Meier curve; vertical drops are events.

Rapid recall: Kaplan-Meier vertical drop?

Event occurred.

Rapid recall: censored data?

Incomplete follow-up, not death.

Extra practice

On a Kaplan-Meier curve, a participant is lost to follow-up at year 3 without having the event. How should that be interpreted?

Reveal answer & explanation

As censored data , not as an event/death.