Hi List,

I have to compare a relationship between y and x for two locations. I found logistic regression fits both datasets well, but I am not sure  how to test if relationships for both sites are significantly different. I searched the r site, however no answers exactly match the question.

I used Tukey's HSD to compare two means, but the relationship in my study was not simply linear. So I was wondering if there is anyone had experience in making such comparisons. Thanks in advance!

Jenny

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