"Now, every year new procedures are released on to the market and allow for more accurate diagnosis. These new screening techniques reveal minuscule tumours that no doctor had ever noticed before. The result: **patients who were erroneously diagnosed as healthy before are now counted “as stage-one patients”. The addition of relatively healthy people into the stage-one group increases the group’s average life expectancy.** A great medical success? Unfortunately not: mere stage migration.” -- --- **Tags** — [[quotes]], [[will-roger-phenomenon]], [[intention-to-treat-error]], [[statistics]], **Source** — [[202308101525 — B — The Art of Thinking Clearly]]