The AUC is calculated as:
pk.calc.sparse_auc(
conc,
time,
subject,
method = NULL,
auc.type = "AUClast",
...,
options = list()
)pk.calc.sparse_auclast(conc, time, subject, ..., options = list())
Measured concentrations
Time of the measurement of the concentrations
Subject identifiers (may be any class; may not be null)
The method for integration (one of 'lin up/log down', 'lin-log', or 'linear')
The type of AUC to compute. Choices are 'AUCinf', 'AUClast', and 'AUCall'.
For functions other than pk.calc.auxc, these values are passed
to pk.calc.auxc
List of changes to the default PKNCA options (see
PKNCA.options())
pk.calc.sparse_auclast(): Compute the AUClast for sparse PK
$$AUC=\sum\limits_{i} w_i \bar{C}_i$$
Where:
is the estimated area under the concentration-time curve
is the weight applied to the concentration at time i (related to the time which it affects, see sparse_auc_weight_linear())
is the average concentration at time i
Other Sparse Methods:
as_sparse_pk(),
sparse_auc_weight_linear(),
sparse_mean()