Avoiding lead-time bias by estimating stage-specific proportions of cancer and non-cancer deaths

ConclusionAcross all cancer types, the percentage of patients who went on to die from their cancer was over three times greater when the cancer was diagnosed at stage IV than stages I –II. As mortality patterns are not influenced by lead-time bias, these data suggest that earlier detection is likely to improve outcomes across cancer types, including those currently unscreened.
Source: Cancer Causes and Control - Category: Cancer & Oncology Source Type: research