Re: [R] LD50 and SE in GLMM (lmer)

n. Thank you very much! Linda > Date: Mon, 11 Jan 2010 10:21:50 -0500 > Subject: Re: [R] LD50 and SE in GLMM (lmer) > From: billpikou...@gmail.com > To: patili_bue...@hotmail.com > CC: r-help@r-project.org > > Sorry for the delay in response. I had a somewhat similar nee

Re: [R] LD50 and SE in GLMM (lmer)

Sorry for the delay in response. I had a somewhat similar need recently with the difference that I used a logit link for a bioassay. The design had different dose-response "replicates" that I modeled as "blocks". It looks like you are concentrating on estimation of fixed effects and thus the popula

[R] LD50 and SE in GLMM (lmer)

Hi All! I am desperately needing some help figuring out how to calculate LD50 with a GLMM (probit link) or, more importantly, the standard error of the LD50. I conducted a cold temperature experiment and am trying to assess after how long 50% of the insects had died (I had 3 different i