Evidence map›Paper›PMID 32696273›Full record

Trial reportThe AAPS journal2020

Application of Beta-Distribution and Combined Uniform and Binomial Methods in Longitudinal Modeling of Bounded Outcome Score Data.

Chuanpu Hu, Honghui Zhou, Amarnath Sharma

Abstract readClinical Trial, Phase IIComparative StudyMulticenter Study
PubMed Publisher
In one paragraph

Trial report in The AAPS journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Trial
  4. Review
  5. Article
  6. Article
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

3 authors.

Chuanpu HuClinical Pharmacology and Pharmacometrics, Janssen Research & Development, LLC, 1400 McKean Road, PO Box 776, Spring House, Pennsylvania, 19477, USA. CHu25@its.jnj.com.
Honghui ZhouClinical Pharmacology and Pharmacometrics, Janssen Research & Development, LLC, 1400 McKean Road, PO Box 776, Spring House, Pennsylvania, 19477, USA.
Amarnath SharmaClinical Pharmacology and Pharmacometrics, Janssen Research & Development, LLC, 1400 McKean Road, PO Box 776, Spring House, Pennsylvania, 19477, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Disease status is often measured with bounded outcome scores (BOS) which takes a discrete set of values on a finite range. The distribution of such data is often skewed, rendering the standard analysis methods assuming normal distribution inappropriate. Among the methods used for BOS analyses, two of them have the ability to predict the data within its natural range and accommodate data skewness: (1) a recently proposed beta-distribution based approach and (2) a mixture model known as CUB (combined uniform and binomial). This manuscript compares the two approaches, using an established mechanism-based longitudinal exposure-response model to analyze data from a phase 2 clinical trial in psoriatic patients. The beta-distribution-based approach was confirmed to perform well, and CUB also showed potential. A separate issue of modeling clinical trial data is that the collected baseline disease score range may be more limited than that of post-treatment disease score due to clinical trial inclusion criteria, a fact that is typically ignored in longitudinal modeling. The effect of baseline disease status restriction should in principle be adjusted for in longitudinal modeling.

Indexed as

Models, TheoreticalSeverity of Illness IndexDermatologic AgentsHumansPsoriasisUstekinumabDermatologic AgentsUstekinumabbaseline disease severityComposite scorediscrete datalatent variablepopulation pharmacokinetic/pharmacodynamic modeling

Identifiers

What OpenQuestion holds

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Registered trials

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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.