When is a difference statistically significant?
Hill, C.
Journal de Radiologie 72(2): 129-131
1991
ISSN/ISBN: 0221-0363 PMID: 2056475 Document Number: 386945
From a very simple example (8 deaths observed in one group verus 2 in the other), we explain in details how to determine whether a difference is statistically significant. The arbitrariness of the 5% limit used to conclude that a difference is significant, is discussed. The difference between a one-sided and a two-sided situation is described in an appendix.
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