List of Contributions

Hi Jim, Laura, Walter, David, Wayne: Thanks very much for writing and offering help. I figured out the reason for the occasional difference between SAS Proc Glimmix and the Stata melogit command. First, SAS uses the RSPL method by default (maximizing residual log pseudo-likelihood) and Stata uses ...

Hi Colleagues: Has anyone run logistic regression models with random effects, using SAS Proc Glimmix and comparing with the Stata melogit command? Sometimes the results are identical and sometimes, there is a small difference, such as an odds ratio of 0.83 in SAS and 0.87 in Stata. Both software use ...

Dear Colleagues: A co-worker wants to make a correlation matrix of binary variables. Each variable is a 1/0 indicator of whether a hospital is practicing state-of-art cancer care on various types of cancer. The data looks like this: Hospital_ID Compliant_BreastCancer Compliant_Colon Compliant_Lung ...

Thanks Tim. ------------------------------ Brandy Sinco, BS, MA, MS Statistician Senior Michigan Medicine ------------------------------

Hi Friends: I am working on a cancer study, where N is small (~100), because the population of people who have the cancer is small. IE, this is not a small sample from a large population. Does anyone have suggestions for articles, books, or other references for statistical methods for rare cancers ...