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rpairwisecontingency
Electrino
Electrino

Reputation: 2900

Pairwise comparison for contingency tables in R?

I have a contingency table like this in R:

Input:

data <- matrix(c(2, 20, 16, 7, 20, 23), nrow = 2, byrow = TRUE,
                       dimnames = list(G1 = c("A", "B"),
                                       G2 = c("1", "2", "3")))

Output:

      G2
      1  2  3
 G1 A 2 20 16
    B 7 20 23

I applied a chi-square test and also a fisher test. Now, I want to perform a pairwise comparison inside each level for each group. For example:

For level A in G1, is there a difference between 1 and 2 in G2? At the end, I want to be able to have a table like this for:

G1-A:
Contrast | p-value
1-2         xxx
1-3         xxx
2-3         xxx

G1-B:
Contrast | p-value
1-2         xxx
1-3         xxx
2-3         xxx

I tried different packages in R, but none of them give me what I want. Am I trying something that doesn't make sense? Or could anyone help me with how to calculate this, please?

Upvotes: 1

Views: 79

Answers (0)

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