calculate_halflife: Calculate the halflife of data

In ubiquity: PKPD, PBPK, and Systems Pharmacology Modeling Tools

Description

Determines the terminal halflife of a sequence of corresponding times and values with optional minimum and maximum times to censor data.

Usage

calculate_halflife(times = NULL, values = NULL, tmin = NULL, tmax = NULL)

Arguments

times	- sequence of times
values	- corresponding sequence of values
tmin	- minimum time to include (NULL)
tmax	- maximum time to include (NULL)

Value

List with the following names

• thalf Halflife in units of times above

• mod Result of lm used to fit the log transformed data

• df Dataframe with the data and predicted values at the time within tmin and tmax

Examples

x     = c(0:100)
y     = exp(-.1*x)
th    = calculate_halflife(times=x, values=y)
thalf = th$thalf 

ubiquity documentation built on Sept. 5, 2021, 5:15 p.m.