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88 flipped hitc #89

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merged 3 commits into from
Jul 10, 2024
Merged

88 flipped hitc #89

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b25a027
added sign(top) to p3 calculation
brown-jason May 15, 2024
8f2d653
updated p3 to use med_response
brown-jason May 18, 2024
f66abf0
add sign top context and abs to toplikelikhood
brown-jason May 20, 2024
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6 changes: 4 additions & 2 deletions R/toplikelihood.R
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,8 @@
#' toplikelihood(fname, cutoff = 1, conc, resp, ps, top, mll)
#' toplikelihood(fname, cutoff = 1.2, conc, resp, ps, top, mll)
toplikelihood = function(fname, cutoff, conc, resp, ps, top, mll, errfun = "dt4"){
#cutoff needs to account for sign otherwise reparameterization will flip the model
cutoff = cutoff*sign(top)

#reparameterize so that top is exactly at cutoff
if(fname == "exp2"){
Expand All @@ -60,8 +62,8 @@ toplikelihood = function(fname, cutoff, conc, resp, ps, top, mll, errfun = "dt4"
#get loglikelihood of top exactly at cutoff, use likelihood profile test
# to calculate probability of being above cutoff
loglik = tcplObj(p = ps, conc = conc, resp = resp, fname = fname, errfun = errfun)
if(abs(top) >= cutoff) out = (1 + pchisq(2*(mll - loglik), 1))/2
if(abs(top) < cutoff) out = (1 - pchisq(2*(mll - loglik), 1))/2
if(abs(top) >= abs(cutoff)) out = (1 + pchisq(2*(mll - loglik), 1))/2
if(abs(top) < abs(cutoff)) out = (1 - pchisq(2*(mll - loglik), 1))/2

return(out)

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