I have a few questions about binary logistic regression.
AI have 1 categorical DV (2 level).
BI have 1 categorical covariate (2 level) programmed as a categorical variable in the "Categorical" options in he regression window. That "indicator" and "Reference Category" stuff, which I'm not exactly sure how to work. I left it as "indicator" and "last." Correct?
C I have 1 continuous fixed factor, which is really what I want to present. I want to present the relationship between this variable and my DV. So my Q is how to report this? Some articles I am following reports Adjusted Odds Ratios only. and probably pvalues. Where do I get the pvalue for this relationship? From the associated Sig, Exp(B) and 95% CI for Exp(B) Value boxes in the bottommost table, Variables in the Equation table?
D I have 4 continuous covariates.
To make things more complicated, the 5 continuous factors above in sections C and D, I also have them as categorical. I would actually rather to use them as continuous. But I'm thinking SPSS doesn't take them as continuous because the dF is 1. I had a similar problem before but couldn't get my mind around it so I'm asking again. Does it look like SPSS treats these variables as continuous?
And is the result this sentence: "as the continuous fixed factor goes/up down, the chances the DV will go up/down is 0,862 controlling for the covariates mentioned above?" Since the AOR is actually lower than 1, it is in a negative relationship, right? I got that 0,852 from the fixed factor (IV of interest, the second from the top).
Thanks a lot.
AI have 1 categorical DV (2 level).
BI have 1 categorical covariate (2 level) programmed as a categorical variable in the "Categorical" options in he regression window. That "indicator" and "Reference Category" stuff, which I'm not exactly sure how to work. I left it as "indicator" and "last." Correct?
C I have 1 continuous fixed factor, which is really what I want to present. I want to present the relationship between this variable and my DV. So my Q is how to report this? Some articles I am following reports Adjusted Odds Ratios only. and probably pvalues. Where do I get the pvalue for this relationship? From the associated Sig, Exp(B) and 95% CI for Exp(B) Value boxes in the bottommost table, Variables in the Equation table?
D I have 4 continuous covariates.
To make things more complicated, the 5 continuous factors above in sections C and D, I also have them as categorical. I would actually rather to use them as continuous. But I'm thinking SPSS doesn't take them as continuous because the dF is 1. I had a similar problem before but couldn't get my mind around it so I'm asking again. Does it look like SPSS treats these variables as continuous?
And is the result this sentence: "as the continuous fixed factor goes/up down, the chances the DV will go up/down is 0,862 controlling for the covariates mentioned above?" Since the AOR is actually lower than 1, it is in a negative relationship, right? I got that 0,852 from the fixed factor (IV of interest, the second from the top).
Thanks a lot.
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