# Options for Controlling PKNCA

#### Bill Denney

# Summary

PKNCA has many options that control its function. These options have effects throughout the package. The options are controlled using either the `PKNCA.options` function or by passing the `options` argument to any of the functions with that as an argument. All options supported by the current version of PKNCA (0.10.2) are listed below with their descriptions.

# Options

## adj.r.squared.factor

The adjusted r^2 for the calculation of lambda.z has this factor times the number of data points added to it. It allows for more data points to be preferred in the calculation of half-life.

The default value is: 1e-04

## max.missing

The maximum fraction of the data that may be missing (‘NA’) to calculate summary statistics with the business.* functions.

The default value is: 0.5

## auc.method

The method used to calculate the AUC and related statistics. Options are ‘lin up/log down’ and ‘linear’.

The default value is: lin up/log down

## conc.na

How should missing (‘NA’) concentration values be handled? See help for ‘clean.conc.na’ for how to use this option.

The default value is: drop

## conc.blq

How should below the limit of quantification (zero, 0) concentration values be handled? See help for ‘clean.conc.blq’ for how to use this option.

$first [1] “keep”

$middle [1] “drop”

$last [1] “keep”

## first.tmax

If there is more than one concentration equal to Cmax, which time should be selected for Tmax? If ‘TRUE’, the first will be selected. If ‘FALSE’, the last will be selected.

The default value is: TRUE

## allow.tmax.in.half.life

Should the concentration and time at Tmax be allowed in the half-life calculation? ‘TRUE’ is yes and ‘FALSE’ is no.

The default value is: FALSE

## min.hl.points

What is the minimum number of points required to calculate half-life?

The default value is: 3

## min.span.ratio

What is the minimum span ratio required to consider a half-life valid?

The default value is: 2

## max.aucinf.pext

What is the maximum percent extrapolation to consider an AUCinf valid?

The default value is: 20

## min.hl.r.squared

What is the minimum r-squared value to consider a half-life calculation valid?

The default value is: 0.9

## tau.choices

What values for tau (repeating interdose interval) should be considered when attempting to automatically determine the intervals for multiple dosing? See ‘choose.auc.intervals’ and ‘find.tau’ for more information. ‘NA’ means automatically look at any potential interval.

The default value is: NA

## single.dose.aucs

When data is single-dose, what intervals should be used?

start | end | auclast | aucall | aumclast | aumcall | aucint.last | aucint.last.dose | aucint.all | aucint.all.dose | c0 | cmax | cmin | tmax | tlast | tfirst | clast.obs | cl.last | cl.all | f | mrt.last | mrt.iv.last | vss.last | vss.iv.last | cav | ctrough | cstart | ptr | tlag | deg.fluc | swing | ceoi | aucabove.predose.all | aucabove.trough.all | ae | clr.last | clr.obs | clr.pred | fe | sparse_auclast | time_above | aucivlast | aucivall | aucivint.last | aucivint.all | aucivpbextlast | aucivpbextall | aucivpbextint.last | aucivpbextint.all | half.life | r.squared | adj.r.squared | lambda.z | lambda.z.time.first | lambda.z.n.points | clast.pred | span.ratio | thalf.eff.last | thalf.eff.iv.last | kel.last | kel.iv.last | aucinf.obs | aucinf.pred | aumcinf.obs | aumcinf.pred | aucint.inf.obs | aucint.inf.obs.dose | aucint.inf.pred | aucint.inf.pred.dose | aucivinf.obs | aucivinf.pred | aucivpbextinf.obs | aucivpbextinf.pred | aucpext.obs | aucpext.pred | cl.obs | cl.pred | mrt.obs | mrt.pred | mrt.iv.obs | mrt.iv.pred | mrt.md.obs | mrt.md.pred | vz.obs | vz.pred | vss.obs | vss.pred | vss.iv.obs | vss.iv.pred | vss.md.obs | vss.md.pred | vd.obs | vd.pred | thalf.eff.obs | thalf.eff.pred | thalf.eff.iv.obs | thalf.eff.iv.pred | kel.obs | kel.pred | kel.iv.obs | kel.iv.pred | auclast.dn | aucall.dn | aucinf.obs.dn | aucinf.pred.dn | aumclast.dn | aumcall.dn | aumcinf.obs.dn | aumcinf.pred.dn | cmax.dn | cmin.dn | clast.obs.dn | clast.pred.dn | cav.dn | ctrough.dn
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