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    logistic regression include constant??

    Ok, got it. Thanks for your replies guys!
  2. T

    logistic regression include constant??

    Dear all, I have been working on a binary logistic regression model. My dependent variable is death or no death, while the independent variables are a number of variables. When conducting a univariable regression analysis, SPSS asks me to include the constant or not. When I try both methods...
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    Which variable for Cox regression?

    I have aboud 430 observations. Data split sounds good. How about I conduct two multivariable Cox regression analyses, one containing the old score as a covariate, and another analyses which contains the new variable in the model and see, which one performs better?
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    Which variable for Cox regression?

    Hey hlsmith, so it's as follows: one variable ist coded as 0, 1, 2, 3 (with 3 being the most severe form of the disease, so 0 as reference). then I have the revised definition of the variable, which is coded as 0, 1, 2, 3, 4. My question is to compare both definitions in terms of their ability...
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    Which variable for Cox regression?

    Hi guys, I have a database of patients with their long-term survival data. Amongst others, I have one variable that resembles a scoring system in order to classify patients according to the severity of the disease (ordinal variable, 4 classes). This classification system was recently revised...