Displaying 2 results from an estimated 2 matches for "male_glm".
2001 Sep 14
0
Power to detect change (poisson)
...be gentle!!)
I'm trying to extract the residual variance out of a glm with poisson data
to
conduct power and sample size to detect a change over years.
I have equal reps within year (for now).
Is the residual variance just the grand mean of the original count data, or
something trickier?
glm.Male_glm(M~year*strata,family=poisson,offset=dur)
levels(year)
[1] "2000" "2001"
> levels(strata)
[1] "0-4" "4.1-8" "12.1-16" "8.1-12"
Norm Good
Fisheries Biologist (Mathematician)
Southern Fisheries Centre
PO Box 76, Deception Bay...
2001 Sep 20
0
Power to detect a change poisson glm
...re.
> I'm trying to conduct power and sample size to detect a change over years
> from poisson data
>
Is there some simulation routine in R that I could use (or that someone has
used eslwhere) on a set of generated data that has a mean, say 10% less than
current estimates?
> glm.Male_glm(M~year*strata,family=poisson,offset=duration)
>
> levels(year)
> [1] "2000" "2001"
> > levels(strata)
> [1] "0-4" "4.1-8" "12.1-16" "8.1-12"
>
>
>
>
>
> Norm Good
>
> Fisheries Biolog...