Evidence map›Paper›PMID 30446902›Full record

SynthesisJournal of neuro-oncology2019

Effects of surgery on neurocognitive function in patients with glioma: a meta-analysis of immediate post-operative and long-term follow-up neurocognitive outcomes.

Justin Choon Hwee Ng, Angela An Qi See, Ting Yao Ang, Lysia Yan Rong Tan, Beng Ti Ang, Nicolas Kon Kam King

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Journal of neuro-oncology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 8 pooled it
4.8field-weighted citation impact, top 4% of its field
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

50 citing papers in PubMed, 8 syntheses or guidelines pooled it, 82 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Justin Choon Hwee NgYong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Angela An Qi SeeDepartment of Neurosurgery, Singapore General Hospital, Singapore, Singapore.
Ting Yao AngYong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Lysia Yan Rong TanDepartment of Neurosurgery, Singapore General Hospital, Singapore, Singapore.
Beng Ti AngDepartment of Neurosurgery, Singapore General Hospital, Singapore, Singapore.
Nicolas Kon Kam KingDepartment of Neurosurgery, Singapore General Hospital, Singapore, Singapore. nicolas.kon.k.k@singhealth.com.sg.ORCID http://orcid.org/0000-0002-6009-4411
Singapore General Hospital · SGNational University of Singapore · SGSingHealth · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study aims to identify the neuropsychological tests commonly used for assessment in each neurocognitive domain, and quantify the post-operative changes in neurocognitive function in the immediate post-operation and follow-up.

methodsWith the use of the PubMed, a comprehensive search of the English literature was performed following PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) guidelines. There were 1021 publications identified for screening. Standardized mean differences (SMD) in neuropsychological task performance were calculated both for immediate post-operation (up to 1 week) and follow-up (up to 6 months).

resultsOut of 12 studies which met the inclusion criteria, 11 studies were analyzed in this meta-analysis, with a total of 313 patients (age range 18-82, 50% males) with intracranial gliomas (45% high-grade, 55% low-grade). Complex attention, language and executive function were the most frequently tested neurocognitive domains. Surgery had a positive impact in the domains of complex attention, language, learning and memory tasks in the immediate post-operative period and sustained improvement at follow-up. In contrast, surgery was found to negatively impact performance for executive function in the immediate post-operative period with sustained decline in performance in the long term.

conclusionsThis meta-analysis suggests that surgery for glioma confers a benefit for the domains of complex attention, language, learning and memory, while negatively affecting executive function, in the periods immediately after surgery and at 6 months follow-up. In addition, awake surgery seemed to confer a beneficial effect on neurocognitive functions. Future research should attempt to standardize a battery of neuropsychological tests for patients undergoing surgical resection for glioma, perhaps with a particular focus on executive function.

Indexed as

Neuropsychological TestsAdultAgedBrain NeoplasmsDatabases, FactualFemaleFollow-Up StudiesGliomaHumansMaleMiddle AgedPostoperative PeriodTreatment OutcomeAdultGliomaMeta-analysisNeurocognitive functionSurgical resection

Identifiers

PMID30446902
OpenAlexW2900559205

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.