I am a graduate student in an interdisciplinary psychological field. With the help of a paper I have read today, I have realized that a result of mine is now invalid: I missed a covariate in my analysis and when I include it, my result is non-significant. Fortunately it was not that much about the main point of my conclusion, but the non-significant term happens to be in my abstract title (and my abstract is printed on the abstract book of the conference now!).
I told this to my advisor and he said: “you cannot control every single thing, it is not that important”. But I have controlled it and it did affect my results, and I actually had that particular covariate in my analysis while I was writing the abstract and my advisor told me to exclude it.
I do not know what to do now. I cannot pretend like the result is still there; that conference is very important in my field and I do not want to regret it later. I do not think that it is ethical. I cannot pretend like I did not know that particular covariate is actually important for my analysis, because I have read the paper! I do not know what to do if someone asks me: “why you did not include this covariate?” I do not know whether it is okay to change the title and exclude some results from the poster, even when the abstract (in the abstract book) says another thing.
What should I do? I am very confused and hopeless.