HOW TO CUT-OFF A VARIABLE

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ramona90
Posts: 1
Joined: Fri May 29, 2015 3:34 pm

HOW TO CUT-OFF A VARIABLE

Postby ramona90 » Sat May 30, 2015 3:23 pm

Hey there!I am a medical student and i'm currently working on my final paper.I have continuous risk factors that are statistically significant. Now i want to make multiple cut-off points in each significant risk factor to prove which is the interval that influences my outcome.I tried to make random groups,but i realised that it changes it's significance.How can i transform a continuous variable in different categories without influencing the statistical significance.I don't know a lot about statistics and whould appreciate your help.Thank you!
GerineL
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Posts: 1477
Joined: Tue Jun 10, 2008 4:50 pm

Re: HOW TO CUT-OFF A VARIABLE

Postby GerineL » Mon Jun 01, 2015 9:20 am

Not clear as to what you have been doing and what you attempt to do now.
need more info on your design, e.g. what test you used etc etc.
In general, whenever you use a different variable (e.g., ordinal instead of continuous) this could obviously change the outcome.

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