[R] exact trend test

[Michael Dewey]

Have you tried Google?
exact randomisation trend test r
finds what look like clearly relevant packages

On 07/01/2016 04:16, li li wrote:
> Hi all,
>    Is there an R function that does exact randomization trend test?
>    For example, consider the 2 by 5 contingency table below:
>
>              dose0    dose 0.15    dose 0.5    dose 1.5    dose 5       row
> margin
>   Yes          4                3                  4               5
>       8                   24
>    No          4                5                   4               3
>         0                  16
> col sum    8                8                   8               8
>     8                   40
>
> To do the exact trend test, we need to enumerate all the contingency table
> with the
> row and column margins fixed. Find the probability corresponding to
> obtaining
> the corresponding contingency tables based on the multivariate
> hypergeometric distribution. Finally the pvalue is obtained by adding
> relevant probabilities.
>
> Is there an R function that does this? if not, I am wondering whether it is
> possible to
> enumerate all possible contingency tables that has column sun and row sum
> fixed?
>
> Thanks very much!!
>
>     Hanna
>
> 	[[alternative HTML version deleted]]
>
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-- 
Michael
http://www.dewey.myzen.co.uk/home.html