pooled estimates

  1. H

    Need help with pooling groups!

    So I am not completely sure whether I can pool my groups or not to compare them, or if it would be better to compare them pair-wise. The purpose of this comparison is to test the efficacy of my stress protocol. Here is my experiment design: In my first data set I have three different types of...
  2. G

    Pooled estimate of logistic regression with complex weights

    Hello world, I apologize for not being smarter but here is my question with a bit of a background. I used a multiple imputation method to fill in missing data for a binary outcome that came from survey data. Unfortunately, I found that SPSS does not necessarily come up with a pooled estimate...
  3. R

    How meaningful is to pool data from different surveys on the same target population?

    HI everybody, this is a very theoretical question for me but I would like to find an answer as I might want to use this in the (near) future. In many cases same questions are used in different surveys which are targeted for the same (or almost the same) population (and all designed to give...
  4. T

    Binary logistic regression with multiple imputed data: how to get pooled estimates?

    Dear all, I have performed multiple imputation on my dataset using SPSS 20, giving me 10 different datasets. I have understood that you could easily perform logistic regression on these and that you would get the pooled estimates (saw some examples of this as well, but only with the enter...
  5. K

    Pooled estimates hazard ratio

    Hi, I builded a database with SPSS, and I used multiple imputation to impute missing data. Now I imported this database in R and trying to do further analysis. Issue is that R doesn't know that is multiple imputed dataframe (5x), and get it as 1 data frame. I get wrong estimates and no...
  6. T

    Correlation and multiple imputation

    Dear all, I have been attempting to use multiple imputation (MI) to handle missing data in my study. I use the mice package in R for this. The deeper I get into this process, the more I realize I first need to understand some basic concepts which I hope you can help me with. For example...