Lost-chance questions are especially dependent on state law

“Loss of chance” can describe an argument that delayed or incorrect care reduced the opportunity for a better outcome. Whether and how that theory is recognized is a legal question that varies by jurisdiction, so this page does not state a universal rule.

Medical chronology is central

  • Condition and prognosis before the alleged delay
  • When a diagnosis or treatment opportunity allegedly existed
  • What was known at each clinical decision point
  • When treatment actually began
  • Later medical opinions about prognosis and outcome

Do not substitute statistics for case-specific causation

Population-level survival or outcome statistics may provide context, but an expert may need to explain whether they apply to the patient's stage, condition, comorbidities, and available treatment options.

Questions for a lawyer

  • Does the relevant state recognize a lost-chance theory?
  • What causation standard applies?
  • Which specialty should address the medical prognosis?
  • What records establish the key before-and-after decision points?

Reliable starting sources

Use original medical records and current legal sources. This site cannot decide whether malpractice occurred or calculate a filing deadline.