The conditional probability of relapse for cancer patients in remission

Research output: Contribution to journalArticle

Abstract

Objective: The purpose of this paper is to highlight and solve an issue of importance that affects the well-being and confidence of cancer sufferers world-wide.

Design: It is well documented that there may be a relatively high risk, once a patient achieves remission, of the cancer returning and this is a question in the forefront of every patient's mind. This risk of relapse may depend on the attributes (gender, age, well-being) of the patient, although there is general agreement that, if the cancer does return, it will almost certainly be within a given number of months or years. The aim is to produce an effective way of updating a patient on the chance they will relapse.

Materials and Methods: Two models are considered, including a stepwise Kaplan-Meier type, that enable a doctor to provide a better estimate to the patient of the chance of a relapse as time passes since remission. These are conditional probability models based on the best information known.

Results: A combined model is found to be appropriate and suitable equations for calculating the relevant conditional probabilities are derived. A simple table illustrating the technique is also provided.

Conclusion: It is possible to give cancer sufferers in all countries better information on the likelihood that they will relapse, given that they have survived to a certain point. This provides an uplifting experience and an increase in confidence.
Original languageEnglish
Pages (from-to)95-98
Number of pages4
JournalInternational Medical Journal
Volume25
Issue number2
Publication statusPublished - Apr 2018

Keywords

  • cancer
  • relapse
  • conditional probability
  • Kaplan-Meier
  • statistical models

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