topic Re: Sensitivity in Simple Linear Regression in SAS Enterprise Guide

Sensitivity in Simple Linear Regression

matt23 — Wed, 20 Jun 2018 13:34:41 GMT

Hi,

I was asked to do sensitivity analysis for my simple linear regression models but I do not know how.

If I have my simple PROC REG code

PROC REG data=dataname;
model Y=X;
run;

and I get my results. Is there anything I need to look at specifically for sensitivity or is there another procedure that would give me the sensitivity?

Re: Sensitivity in Simple Linear Regression

matt23 — Wed, 20 Jun 2018 13:40:08 GMT

Would sensitivity just mean the coefficient for the variable ?

Re: Sensitivity in Simple Linear Regression

PaigeMiller — Wed, 20 Jun 2018 13:49:13 GMT

@matt23 wrote:

Would sensitivity just mean the coefficient for the variable ?

That's a reasonable understanding of the meaning of the word "sensitivity", but there are other reasonable meanings, and you need to clarify what is meant by "sensitivity" before actually doing the analysis.

Re: Sensitivity in Simple Linear Regression

Reeza — Wed, 20 Jun 2018 14:34:47 GMT

Sensitivity and specificity are statistical terms but would not apply to a linear regression with the standard model. Logistic regression would include a sensitivity analysis.

A more detailed description of your problem is required.

@matt23 wrote:

Would sensitivity just mean the coefficient for the variable ?

Likely not.

Statistical definition

https://en.wikipedia.org/wiki/Sensitivity_and_specificity

That being said, sensitivity analysis is a different topic which could possibly be what you're looking for here?

Re: Sensitivity in Simple Linear Regression

matt23 — Wed, 20 Jun 2018 15:48:59 GMT

I'm not trying to argue as I have no idea but I found this on wikipedia:

Regression analysis, in the context of sensitivity analysis, involves fitting a linear regression to the model response and using standardized regression coefficients as direct measures of sensitivity.

Re: Sensitivity in Simple Linear Regression

PaigeMiller — Wed, 20 Jun 2018 16:10:42 GMT

Someone asked you to do a sensitivity analysis. Until we know what that meant (and you know what that meant), there is no possibility of providing you an answer. Go back to the person who asked, and try to find out what was meant.