1. For some reason that I don't understand I was not able to get R to download the sm package in the same way in which I was for the alr3 package. The package was stated as not found in the CRAN archive. A search on the CRAN web site seem to have reference to this package however.
2. When we fit a logistic model using the R function glm we find estimated coefficients now given by
From which we see that the sign of the β coefficient of log(CK) is negative indicating that larger values of CK indicate less chance of survival.