$$H_0: p_0=p_1=\ldots = p_k$$
$$H_1: p_0 \leq p_1 \leq \ldots \leq p_k \text{ with } p_k > p_0 $$
Dose scores
Group sizes
Cases per group
p-value of asymptotic test:
p-value of exact test:
Brief Description:
This app computes the one-sided p-values of the Cochran-Armitage trend test for the asymptotic and the exact conditional test. The test statistic used for the asymptotic test can e.g. be found in the paper by Portier and Hoel. The exact conditional test has been established by Williams. The computation of its p-value is performed using an algorithm following an idea by Mehta, et al.