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  1. G

    Am I using the right statistical tests?

    i didnt mean equal to each other, I meant if the mean ranks would have been the same as in my result, maybe that wasnt clear... anyway - so as i understand - in my test population - these results mean that troponin does not affect the chance to die, right? if that's the case, just to understand...
  2. G

    Am I using the right statistical tests?

    wow... i'm confused... didn't you two just say two different things? let me get this straight... if the p.value would have been 0.003 instead of 0.2 and the mean ranks would be the same... doesnt that mean that there is no significant difference between the groups = and then troponin has no...
  3. G

    Am I using the right statistical tests?

    but doesn't the mean rank result in MW have meaning?
  4. G

    Am I using the right statistical tests?

    I am really grateful for your comments and help! #Karabiner - hope i got this right: i'm not sure i know how to present the same data in a boxplot but i tired anyway... so... regarding "the test result showed exactly the opposite from what i expected" - these are my Mann-Whitney results...
  5. G

    Am I using the right statistical tests?

    biostat, isnt comparing the two groups against troponin is what the MW supposed to do? also - about the values - this is exactly why we are performing this study. the levels of troponin vary a LOT in children and we're trying to find out if the height of their rise above 0.05 means anything
  6. G

    Am I using the right statistical tests?

    ok i playes with the histogram a bit - and this is the histogram for the troponin after a log transformation: (i think) what other groups are you talking about? because the other values that im testing against the troponin in the Mann-whitney are categorial with two levels
  7. G

    Am I using the right statistical tests?

    i tried that, i'm not sure if did that correctly - what do you think? this is the troponin histogram for all subjects
  8. G

    Am I using the right statistical tests?

    thanks for your reply. the spearman correlation made sense completely. My problem is with the Mann-whitney results. regarding you suggestion to use ANOVA and the logarithmic transformation- why would that help me? thanks for the help again...
  9. G

    Am I using the right statistical tests?

    well... results that logically dont make sense... especially with the mann-whitney test - in all of the four independent variables that i tested (there were 3 others apart from death) the test result showed exactly the opposite from what i expected... ofcourse that it could be perfectly accurate...
  10. G

    Am I using the right statistical tests?

    I am conducting a study to check for the distribution and effects of troponin levels in ill children. I have ~700 patients. I used SPSS version 24. I first wanted to check if there is a correlation between the troponin level (numeric/continuous) and several other lab parameters for each patient...