Evidence map›Paper›PMID 33963582›Full record

ArticleStatistics in medicine2021

Conflating marginal and conditional treatment effects: Comments on "Assessing the performance of population adjustment methods for anchored indirect comparisons: A simulation study".

Antonio Remiro-Azócar, Anna Heath, Gianluca Baio

Abstract readLetterComment
PubMed Publisher
In one paragraph

Article in Statistics in medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Systematic review and indirect treatment comparisons of ritlecitinib against baricitinib in alopecia areata.Journal of the European Academy of Dermatology and Venereology : JEADV · 2025
    Pooled it
  2. Article
  3. Interpreting the meaningfulness of treatment effects estimated in parallel groups designs: comment on Trigg et al.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Bayes Factors for Mixed Models: Perspective on Responses.Computational brain & behavior · 2023
    Article
  9. Article
  10. Article
  11. Two-stage matching-adjusted indirect comparison.BMC medical research methodology · 2022
    Article
  12. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Antonio Remiro-AzócarDepartment of Statistical Science, University College London, London, UK.ORCID 0000-0002-2877-2315
Anna HeathDepartment of Statistical Science, University College London, London, UK.
Gianluca BaioDepartment of Statistical Science, University College London, London, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this commentary, we highlight the importance of: (1) carefully considering and clarifying whether a marginal or conditional treatment effect is of interest in a population-adjusted indirect treatment comparison; and (2) developing distinct methodologies for estimating the different measures of effect. The appropriateness of each methodology depends on the preferred target of inference.

Indexed as

Computer SimulationHumanscausal inferenceconditional treatment effectindirect treatment comparisonmarginal treatment effectpopulation adjustment

Identifiers

PMID33963582

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.