Hello Rick, I have a follow-up question. Is there a way to find the p-value for trend when doing a multivariate logistic regression? This guide explains that the Score test is equivalent to the Cochran-Armitage trend test. Essentially, they show how to obtain the p-value for trend in a logistic regression, using only one predictor variable. If I add covariates like age, etc. to the model, how can I find the p-value for trend for my main predictor in this case? I'm using logistic regression because I also want to find the Odds Ratio - to show the trend in the odds ratios for my study. (There's no literature online explaining how to do this, so I'm posting here). Thank you.
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