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 Posted: Fri, 9th Sep 2011 16:42 Post subject: Help with statistics |
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First of all, I hate statistics and I suck at it. I had some blood from a clinical study with four distinct groups, I need to know whether the difference is statistically significant. I tried to fiddle with ANOVA, t-test and whatnot, I can't make sense out of it. Can someone recommend me some app where I can put these values in and get significance. Or even better, can someone take a look at the excel sheet below?
http://www.mediafire.com/?sfojk0oxyc66wft
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| Posted: Fri, 9th Sep 2011 17:18 Post subject: |
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A bit more detail? What's what? What is your dependent (f(x)) and independent (x) variable?I plotted those things you've said against the first column (just numbers) in OriginPro8.
Fitting anything to this without knowing more info makes no sense :\
"Quantum mechanics is actually, contrary to it's reputation, unbeliveably simple, once you take the physics out."
Scott Aaronson | chiv wrote: | | thats true you know. newton didnt discover gravity. the apple told him about it, and then he killed it. the core was never found. |
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| Posted: Fri, 9th Sep 2011 17:23 Post subject: |
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Ah sorry. There are different groups as you found out yourself. On the bottom I calculated the average, the deviance and the error of the mean. As you can see there's a small difference between the groups. What interests me is the statistical difference of the groups "isch", "post" and "24h" compared to "pre-MI" when the average of the values is taken. So the hypothesis would be: isch is better than pre-MI, post is better than pre-MI and so forth.
Oh and "pre-MI" is set to 1 for all patients, the otehr values are relative to pre-MI.
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