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Level II

## Effect Summary and the Logworth with p-value of 0????

Hi can someone help me?

I am running logistic regression with two x variables below shows my effect summary with the logworth. Now I understand the logworth basically takes the -log(p-value) for each x variable and that works for the p-value 0.00219. What i am confused about is the logworth of for the p-value 0.0000, how is it getting 56.125? Moreover in other regression models I've run into different logworths for p-value  of 0. Can someone please explain this to me so I can move on with my life?

Thank you!!!

Rachel

#statistics

3 ACCEPTED SOLUTIONS

Accepted Solutions
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Super User

## Re: Effect Summary and the Logworth with p-value of 0????

try double clicking on the p-value and change the format to show more decimal places to see what the actual p-value is.

Jim
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Level VI

## Re: Effect Summary and the Logworth with p-value of 0????

Are you sure you used -Log10?
Best,
TS
Thierry R. Sornasse
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Level VI

## Re: Effect Summary and the Logworth with p-value of 0????

Let's review: Log10 (7.5e-57) = Log10 (7.5) + Log10 (e-57) = Log10 (7.5) - 57 = 0.875 - 57 = -56.125
Thierry R. Sornasse
6 REPLIES 6
Highlighted
Super User

## Re: Effect Summary and the Logworth with p-value of 0????

try double clicking on the p-value and change the format to show more decimal places to see what the actual p-value is.

Jim
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Level II

## Re: Effect Summary and the Logworth with p-value of 0????

@txnelson well thank you cause i didn't realize I could do that. With that being said the value is 7.5e-57 but when I take the -log of that it gives me 49.8784920133. So I'm closer but still not spot on.

Highlighted
Level VI

## Re: Effect Summary and the Logworth with p-value of 0????

Are you sure you used -Log10?
Best,
TS
Thierry R. Sornasse
Highlighted
Level II

## Re: Effect Summary and the Logworth with p-value of 0????

-log10 returns 49.8785

Highlighted
Level VI

## Re: Effect Summary and the Logworth with p-value of 0????

Let's review: Log10 (7.5e-57) = Log10 (7.5) + Log10 (e-57) = Log10 (7.5) - 57 = 0.875 - 57 = -56.125
Thierry R. Sornasse
Highlighted
Level II

## Re: Effect Summary and the Logworth with p-value of 0????

Well thank you, I did it with a calculator and thats where I got the 49 answer. Thank you for doing it out!
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