Z-Score

[Andrew'sMom]

Can anyone out there help me on this one? What is a Z-score and where can I find some sort of reference table that explains the ranges or scores? I have been on the Internet all afternoon and keep coming up empty. I understand that the Z-Score is an adjusted calculation that factors in BSA, but I don't understand how to interpret the "final score," that is saying a score of "4" XX measurement, is it good, bad, middle of the road? Thanks!

 

[Phyllis]

It's all Greek to me, but came across this site and maybe it will help you, if you haven't come across it yourself:
http://www.joanna-zeiger.com/research/papers/CoronaryArtery.pdf

 

[jeffp]

The z-score is a statistical measurement of the variabilty of the data used. For a z-score of 1, about 68% of the subjects were in that range; for a score of 2, about 97% were in that range. A larger z-score just means that the numbers in the study were more spread out, but has nothing to do with what the data actually means. The p number is related to the confidence level of the result and smaller means within more certainty.

 

[Andrew'sMom]

Thanks for the info. The report I have now has only Z-scores (ranging from -0.95 to +4); I am going to be getting the complete, more detailed report next week when it is done, so maybe that report will have the P values you were talking about. Again, thanks to all.