Evidence map›Paper›PMID 35939055›Full record

SynthesisBrain and behavior2022

Neuropsychiatric Inventory domains cluster into neuropsychiatric syndromes in Alzheimer's disease: A systematic review and meta-analysis.

Shaun Kuan Wei Hiu, Theophile Bigirumurame, Patience Kunonga, Andrew Bryant, Manjunadh Pillai

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Brain and behavior, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

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

  1. Pooled it
  2. Toward Precision Neuropsychiatry of Dementia: Neuropsychiatric Symptoms as Multidimensional Clinical Phenotypes.Psychogeriatrics : the official journal of the Japanese Psychogeriatric Society · 2026
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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.

Shaun Kuan Wei HiuPopulation Health Sciences Institute, Newcastle University, Newcastle University, UK.ORCID 0000-0003-1699-4348
Theophile BigirumuramePopulation Health Sciences Institute, Newcastle University, Newcastle University, UK.
Patience KunongaPopulation Health Sciences Institute, Newcastle University, Newcastle University, UK.ORCID 0000-0002-6193-1365
Andrew BryantPopulation Health Sciences Institute, Newcastle University, Newcastle University, UK.
Manjunadh PillaiCampus for Ageing and Vitality, Northumberland Tyne and Wear, Newcastle upon Tyne Hospitals, Newcastle upon Tyne, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies of patients with Alzheimer's disease (AD) have observed that neuropsychiatric symptoms (NPS) tend to co-occur as neuropsychiatric syndromes and have generally shown mixed results regarding the number and composition of syndromes. We systematically reviewed how neuropsychiatric syndromes in AD have been defined and compared the different published definitions in a pooled sample of AD patients using meta-analytic structural equation modeling (MASEM).

methodsStudies examining the factor structure of the Neuropsychiatric Inventory (NPI) and published from 1994 to 2021 were included. We contacted the corresponding authors of eligible studies for correlation coefficients between NPI items. We pooled correlations under a random effects MASEM model and fitted and compared measurement models from published studies to identify a best-fitting model.

resultsTwenty-five studies were included in the systematic review, and correlations were obtained from seven studies for MASEM. For the NPI-10 (seven studies, n = 5185), a five-factor structure was found to have a good fit to the data. For the NPI-12 (four studies, n = 2397), we were unable to identify a factor structure that displayed a good model fit.

conclusionThis systematic review and meta-analysis contribute to the development of a theoretical model of neuropsychiatric syndromes in AD and reveals the barriers that accompany MASEM methodology.

Indexed as

Alzheimer DiseaseHumansNeuropsychological TestsSyndromeAlzheimer's diseasemeta-analysisneuropsychiatric symptomssystematic review

Identifiers

PMID35939055
PMCPMC9480932

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Registered trials

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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.