Recent content by jgodel0

  1. J

    95% Confidence intervals differ between statistical programs

    Dear all, I am currently writing a paper for which I have performed some logistic regression analyses using graphpad prism. In these models we evaluated whether a biomarker was able to predict disease progression in neurological disease patients. We found that the biomarker was able to predict...
  2. J

    Is a Fisher's Exact test in a 7x9 contingency table feasible?

    Dear hlsmith, could you maybe shine your light on my method described below, and evaluate whether or not my methods and conclusions are correct? After running my Fisher exact test for 10 hours without result, I've experimented a bit further in SPSS and I stumbled upon the option of Monte Carlo...
  3. J

    Is a Fisher's Exact test in a 7x9 contingency table feasible?

    Well, the purpose of our study is to determine whether or not there is a relation between certain lab tests and certain types of diseases (e.g. patients with neurological diseases more often having a lab test A positive). If this is the case, we want to check if there is a relation between the...
  4. J

    Is a Fisher's Exact test in a 7x9 contingency table feasible?

    Hi hlsmith, sorry but your talking to a real novice here :D What do you mean by pairwise comparisons? A 2x2 table of disease 1-non disease 1 vs test 1-non test 1? How can I correct for false discovery? Regarding the table, the site tells me that my file does not have an allowed extension (with...
  5. J

    Is a Fisher's Exact test in a 7x9 contingency table feasible?

    Hello all, I have a question regarding the use of SPSS (i.e. its capability) to execute a Fisher's Exact test for large, sparse RxC contingency tables. I would like to test whether or not a certain correlation exist between my rows (diagnostic groups) and columns (laboratory tests) (see below)...