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Dec 4, 2017 at 7:20 vote accept Anno
Dec 3, 2017 at 20:49 comment added Todd D Please accept an answer if it answers your question.
Dec 3, 2017 at 17:25 comment added Todd D Yes, you create a variable representing the era before and after the change and then proceed with chi-square or logistic regression.
Dec 3, 2017 at 16:50 comment added Anno Thank you for your response! What if I was to add a change that happened in 2012, so 2011 the change had not yet happened and 2013 the change had happened. And I would still have the question of difference between 2011 and 2013, that is to say is there a statistical difference before the change and after the change between 2011 and 2013 for persons having contact with the hospital or not? Would it still be the same sort of suggested tests?
Dec 3, 2017 at 16:16 history answered Todd D CC BY-SA 3.0