Michael Menke
2009-May-27 18:04 UTC
[R] interpretation of the likelihood ratio test under *R* GLM
Can anyone tell me how the LRT is to be interpreted under the glm package when using glm for logistic regression with mutiple predictors? family=binomial("logit")) drop1(Confidence.glm, test="Chisq") The summary z-table suggests a direction of the effect, and notably the large LRT statistics are the significant ones. I am used to thinking of extremely small LRTs as significant (negative natural logarithms of LRTs). I must assume that the LRT in *R* is alternative hypothesis over null hypothesis, rather than the convention I learned of null/alternative, where a small number (negative logLR) represents strong evidence and zero/zed evidence is represented by an LR of 1 (logLR = 0). Comments? Am I interpreting this correctly? J. Michael Menke University of Arizona