efficient looping logistic regression in R

Question

I\'m trying to run multiple logistic regression analyses for each of ~400k predictor variables. I would like to capture the outputs of each run into a row/column of an outpu

Answer 1

It will be faster if you use apply instead of a for loop:

t(apply(mydatamatrix, 2,
        function(x)
          coef(summary(glm(mydataframe$O1 ~ x + as.factor(mydataframe$P2), 
                           family=binomial)))[2, 1:4]))