Hi,

I'm trying to analyse the relation between 4 independent variables and 1 dependant variable (yes=1, no=0), using Logistic Regression, in SPSS. Also, i'll add 5 moderating variables.

I have several doubts about that:

1) My independant variables are all continuous. I must group them into intervals, right? I read about Sturge's rule to do that. Is that a good option? Or do i have others?

2) My moderating variables are two categorical and three continuous. Since i'll test their moderating effect one by one, it is ok, right? And i must group the three continuous variables as well, am i right?

Hope you can help me. Thank you so much.

Marisa Fernandes

I'm trying to analyse the relation between 4 independent variables and 1 dependant variable (yes=1, no=0), using Logistic Regression, in SPSS. Also, i'll add 5 moderating variables.

I have several doubts about that:

1) My independant variables are all continuous. I must group them into intervals, right? I read about Sturge's rule to do that. Is that a good option? Or do i have others?

2) My moderating variables are two categorical and three continuous. Since i'll test their moderating effect one by one, it is ok, right? And i must group the three continuous variables as well, am i right?

Hope you can help me. Thank you so much.

Marisa Fernandes

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