Evidence map›Paper›PMID 38833024›Full record

ReviewActa neurochirurgica2024

A guide to interpreting systematic reviews and meta-analyses in neurosurgery and surgery.

Ignatius Esene, Ourlad Alzeus G Tantengco, Faith C Robertson, Megan E H Still, Alvan-Emeka K Ukachukwu, Ronnie E Baticulon, Ernest J Barthélemy, Daniela Perez-Chadid, Laura Lippa, Ana Cristina Veiga Silva and 12 more

Abstract readReview
PubMed Publisher
In one paragraph

Review in Acta neurochirurgica, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

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

  1. Pooled it
  2. Review
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

22 authors.

Ignatius EseneNeurosurgery Division, Faculty of Health Sciences, University of Bamenda, Bambili, Cameroon. ignatiusesene@yahoo.co.uk.ORCID 0000-0001-8785-8875
Ourlad Alzeus G TantengcoDepartment of Physiology, College of Medicine, University of the Philippines Manila, Manila, Philippines.
Faith C RobertsonDepartment of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA.
Megan E H StillDepartment of Neurosurgery, University of Florida, Gainesville, FL, USA.
Alvan-Emeka K UkachukwuDepartment of Neurosurgery, Duke University Health System, Durham, NC, USA.
Ronnie E BaticulonDivision of Neurosurgery, Department of Neurosciences, Philippine General Hospital, University of the Philippines, Manila, Philippines.
Ernest J BarthélemyGlobal Neurosurgery Laboratory, Division of Neurosurgery, SUNY Downstate Health Sciences University, Brooklyn, NY, USA.
Daniela Perez-ChadidFaculty of Medicine, Universidad CES, Medellin, Colombia.
Laura LippaDepartment of Neurosurgery, ASST Ospedale Niguarda, Milan, Italy.
Ana Cristina Veiga SilvaNeurosurgery Department of Post Graduation Program in Neuropsychiatry and Behavioral Sciences (PosNeuro), Federal University of Pernambuco, Recife, Brazil.
Luxwell JokonyaDepartment of Surgery, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe.
Fahd D HassaniDepartment of Neurosurgery, Cheikh Zaid International Hospital, Abulcasis International University of Health Sciences, Rabat, Morocco.
Federico NicolosiDepartment of Medicine and Surgery, Neurosurgery Unit, University of Milano-Bicocca, Milan, Italy.
Berjo D TakoutsingResearch Division, Winners Foundation, Yaounde, Cameroon.
Jeff NtalajaClinique Ngaliema, République Démocratique du Congo, Kinshasa, Congo.
Samer S HozDepartment of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
Kazadi K N KalanguDepartment of Surgery, College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe.
Gilbert DechambenoitCentre Medical Chirurgical Obstetrical Cote d'Opale, Saint Martin Boulogne, France.
Franco ServadeiDepartment of Biomedical Sciences, Humanitas University, Milan, Italy.
Najia El AbbadiDepartment of Neurosurgery, Cheikh Zaid International Hospital, Abulcasis International University of Health Sciences, Rabat, Morocco.
Kee B ParkProgram in Global Surgery and Social Change, Harvard Medical School, Boston, MA, USA.
Angelos KoliasDivision of Neurosurgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionSystematic reviews (SRs) and meta-analyses (MAs) are methods of data analysis used to synthesize information presented in multiple publications on the same topic. A thorough understanding of the steps involved in conducting this type of research and approaches to data analysis is critical for appropriate understanding, interpretation, and application of the findings of these reviews.

methodsWe reviewed reference texts in clinical neuroepidemiology, neurostatistics and research methods and other previously related articles on meta-analyses (MAs) in surgery. Based on existing theories and models and our cumulative years of expertise in conducting MAs, we have synthesized and presented a detailed pragmatic approach to interpreting MAs in Neurosurgery.

resultsHerein we have briefly defined SRs sand MAs and related terminologies, succinctly outlined the essential steps to conduct and critically appraise SRs and MAs. A practical approach to interpreting MAs for neurosurgeons is described in details. Based on summary outcome measures, we have used hypothetical examples to illustrate the Interpretation of the three commonest types of MAs in neurosurgery: MAs of Binary Outcome Measures (Pairwise MAs), MAs of proportions and MAs of Continuous Variables. Furthermore, we have elucidated on the concepts of heterogeneity, modeling, certainty, and bias essential for the robust and transparent interpretation of MAs. The basics for the Interpretation of Forest plots, the preferred graphical display of data in MAs are summarized. Additionally, a condensation of the assessment of the overall quality of methodology and reporting of MA and the applicability of evidence to patient care is presented.

conclusionThere is a paucity of pragmatic guides to appraise MAs for surgeons who are non-statisticians. This article serves as a detailed guide for the interpretation of systematic reviews and meta-analyses with examples of applications for clinical neurosurgeons.

Indexed as

Meta-Analysis as TopicNeurosurgeryNeurosurgical ProceduresData Interpretation, StatisticalHumansSystematic Reviews as TopicEvidence-based neurosurgeryForest plotMeta-analysisNeurosurgerySurgerySystematic review

Identifiers

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.