Evidence map›Paper›PMID 18299967›Full record

ArticleJournal of pharmacokinetics and pharmacodynamics2008

An alternative method for population pharmacokinetic data analysis under noncompliance.

Pankaj Gupta, Matthew M Hutmacher, Bill Frame, Raymond Miller

Registry-linked trialAbstract read
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In one paragraph

Article in Journal of pharmacokinetics and pharmacodynamics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02348177 (A Pharmacokinetics Study Comparing Lopinavir Plasma Exposure When Given as Lopinavir/Ritonavir), which is not on this map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02348177 phase4completednot on this mapstarted 2013, after this paper: background citation

A Pharmacokinetics Study Comparing Lopinavir Plasma Exposure When Given as Lopinavir/Ritonavir (1:1) in the Presence of Rifampicin and Lopinavir/Ritonavir (4:1) Without Rifampicin in HIV and TB Co-infected Children in South Africa.

TypeinterventionalSponsorDrugs for Neglected DiseasesRan2013 to 2016Enrolled96ConditionsAcquired Immunodeficiency Syndrome, TuberculosisArmslopinavir with ritonavir in 1:1 ratio, Lopinavir/ritonavir 4:1
3 · Its place in the literature

Who cites it

13 citing papers in PubMed.

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  5. Challenges faced when modeling clinical toxicology and toxinology events.CPT: pharmacometrics & systems pharmacology · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Pankaj GuptaClinical Pharmacology (Pharmacometrics), Pfizer Global Research and Development, 2800 Plymouth Road, Ann Arbor, MI 48105, USA. pankaj.gupta@pfizer.com
Matthew M Hutmacher
Bill Frame
Raymond Miller

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Noncompliance presents a persistent problem while analyzing PK data from outpatient clinical studies. Ignoring dose omission or making uninformed assumptions about patient drug intake history can prove detrimental to the objectives of the analysis (e.g. determining the PK model parameters or identifying covariates) and ultimately compromise the interpretation of the data. In order to overcome this problem, an alternative method of handling noncompliant data is evaluated in this report. The proposed approach is based on the principle of superposition and works by separating the estimation of the elimination rate from the model based steady-state PK concentration. Simulations implementing this method under different scenarios of noncompliance demonstrate that it performs better than the conventional method of analyzing population PK data when compared on the basis of bias and imprecision in parameter estimation and power (and type I error) for covariate detection. Overall, the new method exhibits great potential to address the issue of uncertain/unreliable dosing histories frequently encountered in clinical trials.

Indexed as

Data Interpretation, StatisticalPharmacokineticsAlgorithmsDose-Response Relationship, DrugHumansIntestinal AbsorptionModels, StatisticalPopulationTreatment Refusal

Identifiers

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.