Evidence map›Paper›PMID 40622774›Full record

SynthesisScandinavian journal of medicine & science in sports2025

Differences in Injury Incidence Between Player Positions Across All Rugby Formats-A Systematic Review and Meta-Analysis.

Matias Vaajala, Juho Laaksonen, Rasmus Liukkonen, Oskari Pakarinen, Ilari Kuitunen

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Scandinavian journal of medicine & science in sports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

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

  1. Pooled it
  2. Article
  3. 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

5 authors.

Matias VaajalaFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID https://orcid.org/0000-0002-1294-6173
Juho LaaksonenFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID https://orcid.org/0000-0002-9328-4721
Rasmus LiukkonenFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.ORCID https://orcid.org/0000-0002-2514-3193
Oskari PakarinenDepartment of Surgery, Päijät-Häme Central Hospital, Lahti, Finland.ORCID https://orcid.org/0000-0002-0159-5830
Ilari KuitunenDepartment of Pediatrics, Kuopio University Hospital, Kuopio, Finland.ORCID https://orcid.org/0000-0001-8178-9610

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rugby is a high-intensity contact sport with a high incidence of injuries. The aim of this systematic review and meta-analysis was to compare the injury incidences between forwards and backs in all rugby formats (Rugby Union, Seven, and League). The PubMed (National Library of Medicine), Web of Science (Clarivate), Scopus (Elsevier), and SPORTDiscus (EBSCO) databases were searched from inception to October 10, 2024. A study was eligible if the number of rugby injuries per exposure time for backs and forwards was reported. Incidence rate ratios (IRRs) with 95% confidence intervals (CI) were compared between forwards and backs. After screening 1514 studies, a total of 49 studies were included. The total exposure time was 902 280 player-hours for backs and 1 127 610 player-hours for forwards. Forwards had a slightly higher incidence of injuries in Rugby Union (IRR 1.03, CI 1.00-1.06) and Rugby League (IRR 1.31, CI 1.23-1.41). However, forwards had a lower overall incidence of injuries in Rugby Sevens (pooled IRR 0.78, CI 0.73-0.85). Strain injuries and injuries caused by tackling, running, or collision were more common in backs across rugby formats. In addition to a more standardized definition of injuries and more comprehensive subgroup analyses in future studies, different trends and patterns in injury occurrence regarding playing positions in all rugby formats should be further studied to develop more targeted injury prevention strategies in forwards and backs. Trial Registration: The study protocol was prospectively registered in the PROSPERO database (CRD42025645250).

Indexed as

Athletic InjuriesFootballHumansIncidenceepidemiologyincidencepreventionRugby

Identifiers

PMID40622774
PMCPMC12233056

What OpenQuestion holds

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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.