Readers' Attention of Shorter Versus Longer Abstracts of Systematic Reviews

NCT ID: NCT06525805

Last Updated: 2024-11-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

1941 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-08-01

Study Completion Date

2024-09-30

Brief Summary

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The present randomized controlled trial (RCT) was designed to investigate the perceptions of researchers on systematic review (SR) abstracts. The primary objective will be to compare readers' attention of shorter versus longer abstracts. The secondary objective will be to assess the perception of an abstract based on four indicators of a well-written abstract: (a) Informativeness, (b) Accuracy, (c) Attractiveness, and (d) Conciseness.

The study will involve researchers from all over the world who recently published an SR, regardless of their research field. To identify eligible authors, a search of MEDLINE (via PubMed) was conducted on May 5, 2024, for systematic reviews published between January 1, 2024, and March 26, 2024. A total of at least 6200 SRs will be selected from PubMed and assessed for eligibility. The corresponding author information will be extracted from all included SRs and randomized in a 1:1 ratio.

Detailed Description

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This study will attempt to emulate the reading process observed in PubMed. When searching PubMed, researchers are initially presented with an overview of the references identified. After clicking on the title, the corresponding abstract appears. For full-text access, researchers must actively follow a separate link to the journal page.

In this RCT, participants will be randomly assigned in a 1:1 ratio to two groups (those receiving a long abstract vs. those receiving a short abstract). Both groups receive the same cover letter by e-mail explaining the purpose of the study, the use of the data, measures to ensure anonymity of participation, and a link for participation.

The link will direct participants to SoSci Survey, an online survey tool. Those in the group receiving the long abstract will see an abstract with a length of 771 words (PMID: 37955353). Those in the group receiving the short abstract will see an abstract with a length of 277 words (PMID: 37942649). Both abstracts are structured and pertain to the same review entitled "Percutaneous nephrolithotomy vs. retrograde intrarenal surgery for renal stones". This review was published once in the Cochrane Database of Systematic Reviews and once in the journal BJU International.

The design of the abstract presented is similar to that of PubMed, but no title or authors will be indicated. After reading the abstract, participants must actively click the "Continue" button to proceed with the survey.

Conditions

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Researchers Attention

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

This will be a two-arm, single-blinded, superiority, parallel-group randomized controlled trial (RCT) with 1:1 allocation of intervention and control groups.
Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Participants
The participants will be blinded to the intervention. In the cover letter, participants will be informed that the study aims to examine the characteristics of an abstract. However, they will not be informed that the primary focus of this study is the influence of the abstract´s length. Furthermore, the participants will be not aware of the number of different abstracts that were randomly allocated.

Study Groups

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Long Abstract

Abstract length: 771 words

Group Type EXPERIMENTAL

Long Abstract

Intervention Type OTHER

The intervention and control group will be provided with a structured abstract of the review by Soderberg et al., entitled "Percutaneous nephrolithotomy vs. retrograde intrarenal surgery for renal stones". This review was published once in the Cochrane Database of Systematic Reviews and once in the journal BJU International. The length of the abstract differs significantly depending on the journal.

The participants assigned to this study arm will be presented with the longer version published in the Cochrane Database, comprising 771 words (PMID: 37955353).

Short Abstract

Abstract length: 277 words

Group Type ACTIVE_COMPARATOR

Short Abstract

Intervention Type OTHER

The participants assigned to this study arm will be presented with the shorter version published in BJU International, comprising 277 words (PMID: 37942649).

Interventions

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Long Abstract

The intervention and control group will be provided with a structured abstract of the review by Soderberg et al., entitled "Percutaneous nephrolithotomy vs. retrograde intrarenal surgery for renal stones". This review was published once in the Cochrane Database of Systematic Reviews and once in the journal BJU International. The length of the abstract differs significantly depending on the journal.

The participants assigned to this study arm will be presented with the longer version published in the Cochrane Database, comprising 771 words (PMID: 37955353).

Intervention Type OTHER

Short Abstract

The participants assigned to this study arm will be presented with the shorter version published in BJU International, comprising 277 words (PMID: 37942649).

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Systematic reviews of all types

Exclusion Criteria

For identifying the systematic reviews from which the corresponding authors will be contacted we will use the following eligibility criteria.


* No English abstract
* Other types of evidence syntheses (e.g. scoping reviews, methodological papers)
* Protocols
* Editorials
* Others: e.g. Corrections, retractions, erratums, or summaries of SRs
* No email address available
Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Oldenburg

OTHER

Sponsor Role lead

Responsible Party

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Jasmin Helbach

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Carl von Ossietzky Universität Oldenburg

Oldenburg, , Germany

Site Status

Countries

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Germany

References

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Bahadoran Z, Mirmiran P, Kashfi K, Ghasemi A. The Principles of Biomedical Scientific Writing: Abstract and Keywords. Int J Endocrinol Metab. 2020 Jan 28;18(1):e100159. doi: 10.5812/ijem.100159. eCollection 2020 Jan.

Reference Type BACKGROUND
PMID: 32308700 (View on PubMed)

Munn Z, Stern C, Aromataris E, Lockwood C, Jordan Z. What kind of systematic review should I conduct? A proposed typology and guidance for systematic reviewers in the medical and health sciences. BMC Med Res Methodol. 2018 Jan 10;18(1):5. doi: 10.1186/s12874-017-0468-4.

Reference Type BACKGROUND
PMID: 29316881 (View on PubMed)

Soderberg L, Ergun O, Ding M, Parker R, Borofsky MS, Pais V, Dahm P. Percutaneous nephrolithotomy versus retrograde intrarenal surgery for treatment of renal stones in adults. Cochrane Database Syst Rev. 2023 Nov 13;11(11):CD013445. doi: 10.1002/14651858.CD013445.pub2.

Reference Type BACKGROUND
PMID: 37955353 (View on PubMed)

Soderberg L, Ergun O, Ding M, Parker R, Borofsky M, Pais V, Dahm P. Percutaneous nephrolithotomy vs retrograde intrarenal surgery for renal stones: a Cochrane Review. BJU Int. 2024 Feb;133(2):132-140. doi: 10.1111/bju.16220. Epub 2023 Nov 29.

Reference Type BACKGROUND
PMID: 37942649 (View on PubMed)

Helbach J, Wandscher K, Pieper D, Hoffmann F. Readers' attention to shorter versus longer abstracts of systematic reviews: a randomised controlled trial. BMJ Evid Based Med. 2025 Oct 17:bmjebm-2024-113613. doi: 10.1136/bmjebm-2024-113613. Online ahead of print.

Reference Type DERIVED
PMID: 41106849 (View on PubMed)

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Other Identifiers

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UO_Abstracts_2024

Identifier Type: -

Identifier Source: org_study_id

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