Displaying 1 result from an estimated 1 matches for "shortalifentanil".
2003 Jan 15
2
Bug or Feature? LogLik.nls and non-central F distribution.
...fect
#
# C50 represents the concentration at which 50% of the effect occurs.
#
# gamma represents the cooperativity of the interaction curve.
Somtimes called the hill slope.
#
# C is the concentration of drug.
#
E0 + (Em-E0)*C^g/(C^g+C50^g)
}
short.alif.data <- read.table("shortAlifentanil.txt",header=TRUE);
short.alif.fit <- nls(
formula = E ~ Hill(0,1,A50,g,A),
data = short.alif.data,
start=list(g=1,A50=0.1)
);
Which gives:
> summary(short.alif.fit);
Formula: E ~ Hill(0, 1, A50, g, A)
Parameters:
Estimate Std. Error t value Pr(>|t|)...