Supported covariates appear to have little influence on p

questions concerning analysis/theory using program PRESENCE

Supported covariates appear to have little influence on p

Postby leroy » Fri Jul 06, 2018 3:25 am

Hi guys,

I have a situation where an additive model is the most supported model for detection. One of my covariates in this model is temperature and its influence on detection is quite strong when the other covariate is held constant for all sites. However, the other categorical covariate (detector type) appears to not have any influence on detection when temperature is held at its mean. Just wondering why detector type comes out as being supported in an additive model when it doesn't appear to influence detection on its own?

Cheers,

Leroy.
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Re: Supported covariates appear to have little influence on

Postby darryl » Fri Jul 06, 2018 10:58 am

Hi Leroy,
What are the estimated effect sizes (ie beta parameter estimates) for detector type?
Cheers
Darryl
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Re: Supported covariates appear to have little influence on

Postby leroy » Thu Jul 12, 2018 1:43 am

Hi Darryl,

The beta estimates are:

detector type: 0.000388 +/- 0.000078
temperature: -0.077903 +/- 0.005861

Cheers,

Leroy.
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