This chapter describes some of the statistical methods which the radiotherapist and oncologist are likely to need in order to evaluate critically the effectiveness of treatment for cancer. One of the oldest and greatest errors in medicine is the assumption that treatment is necessarily beneficial. The correct scientific attitude ought to be one of scepticism: a new drug or a new X-ray machine is not always better than its predecessors and may in fact be harmful. Well-established as well as new methods of treatment throughout medicine need to be continually evaluated for both efficacy and safety.
KeywordsSurvival Curve Life Table Failure Time Survival Percentage Relative Survival Rate
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