However I'm not very familiar with SPSS and cannot quite figure it out, do i need to do this manually, and if so would it suffice to use something like: intercept+B1*dummy1*(V-Vquartile1max)+B2*dummy2*(V-Vquartile2max)+b3*dumm圓*(V-Vquartile3max)?ĭoes anyone have any suggestions how to do it correctly because the formula I just wrote is way more suitable for linear than logistic regression, and I don't quite know how to fix it. regression analysis, logit models and log-linear models (see later chapters). We perceive a need for more inclusive and thoughtful interpretation of (in this example) multiple regression results generated through SPSS. The outcome table is something like this: B SE exp(B) lowerbound upperbound Recoding of variables is a broadly used technique in e.g. Regression analysis is one of the important tools to the researchers, except the complex, cumbersome and the expensive undertaking of it especially in obtaining the estimates correctly and interpreting them plentifully. On the Y-axis I want odds and on the X-axis I want my linear variable V (between 0 and 500) which I have binned in quartiles in my analysis. So I have done my analyses and now I'd like to construct a spline of my logistic regression with 3 knots (at quartile values).
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