Intention-to-treat error

What it is

Judging a treatment or programme only by the people who completed it, ignoring those who dropped out, who may have left because it was not working.

Related

• Survivorship bias bias
  Analysing only those who completed a programme ignores the dropouts, which is survivorship bias in studies.
• Self-selection bias bias
  Completers are a self-selected, favourable subgroup.

Appears in

• The 99 thinking errors in Rolf Dobelli's The Art of Thinking Clearly#98: Intention-to-treat error

References

• Wikipedia: Intention-to-treat error en.wikipedia.org
• The 99 thinking errors in Rolf Dobelli's The Art of Thinking Clearly en.wikipedia.org
• Wikipedia: List of cognitive biases en.wikipedia.org
• Wikipedia: Cognitive bias codex en.wikipedia.org

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