An author's error appeared in this article by Trisha Greenhalgh (9 August, pp 364-6). In table 1, the χ2 test is listed as a parametric test. In fact, both the χ2 test and Fisher's exact test are non-parametric.
An author's error appeared in this article by Trisha Greenhalgh (9 August, pp 364-6). In table 1, the χ2 test is listed as a parametric test. In fact, both the χ2 test and Fisher's exact test are non-parametric.
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