Cancer survival rates differ according to whatever type of cancer you have and also the stage that it is diagnosed. One of the worst cancer statistics anywhere in the world is lung cancer. Published 5-year survival for patients with lung cancer varies from 5% to 16% internationally. One of the reasons that the cancer survival rates differ so widely is the fact that the statistical information is not always in the public domain, and each individual study collects and interprets the data differently according to the abstract of the study. Data from the US indicates a 5-year survival rate of up to 16% although this figure cannot be relied on because it excludes seventy five percent of the population, so as a statistic it does not apply to the population as a whole. To make a valid comparison of mortality rates for cancer survival rates is no different from making valid statistical evidence in any other disease, the data has to have been collected and examined in the same way. ( Respiratory Medicine, Volume 100, Issue 9, Pages 1642-1646 C. Butler, K. Darragh, G. Currie, W. Anderson, Respiratory Medicine, Volume 100, Issue 9, Pages 1642-1646). Being frightened by statistics or even worse believing statistics can affect how you survive or not your cancer.