Evidence map›Paper›PMID 33723623›Full record

ArticleJournal of neurology2021

Correlates of the discrepancy between objective and subjective cognitive functioning in non-demented patients with Parkinson's disease.

Mattia Siciliano, Lugi Trojano, Rosa De Micco, Valeria Sant'Elia, Alfonso Giordano, Antonio Russo, Luca Passamonti, Gioacchino Tedeschi, Carlo Chiorri, Alessandro Tessitore

Abstract read
In one paragraph

Article in Journal of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

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

  1. Pooled it
  2. Cognitive Function in Patients With Complex Regional Pain Syndrome (CRPS).European journal of pain (London, England) · 2025
    Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Cognition and Activity of Daily Living Function in people with Parkinson's disease.Journal of neural transmission (Vienna, Austria : 1996) · 2024
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
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  17. Article
  18. Clinical, cognitive, and morphometric profiles of progressive supranuclear palsy phenotypes.Journal of neural transmission (Vienna, Austria : 1996) · 2023
    Article
  19. Review
  20. 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

10 authors.

Mattia SicilianoDepartment of Advanced Medical and Surgical Sciences, MRI Research Center Vanvitelli-FISM, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy.
Lugi TrojanoDepartment of Psychology, University of Campania "Luigi Vanvitelli", Viale Ellittico 31, 81100, Caserta, Italy.
Rosa De MiccoDepartment of Advanced Medical and Surgical Sciences, MRI Research Center Vanvitelli-FISM, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy.
Valeria Sant'EliaDepartment of Psychology, University of Campania "Luigi Vanvitelli", Viale Ellittico 31, 81100, Caserta, Italy.
Alfonso GiordanoDepartment of Advanced Medical and Surgical Sciences, MRI Research Center Vanvitelli-FISM, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy.
Antonio RussoDepartment of Advanced Medical and Surgical Sciences, MRI Research Center Vanvitelli-FISM, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy.
Luca PassamontiDepartment of Clinical Neurosciences, University of Cambridge, CB2 0SZ, Cambridge, UK. lp337@medschl.cam.ac.uk.
Gioacchino TedeschiDepartment of Advanced Medical and Surgical Sciences, MRI Research Center Vanvitelli-FISM, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy.
Carlo ChiorriDepartment of Educational Sciences, University of Genova, Genova, Italy.
Alessandro TessitoreDepartment of Advanced Medical and Surgical Sciences, MRI Research Center Vanvitelli-FISM, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy. alessandro.tessitore@unicampania.it.

Funding

Medical Research Council MR/P01271X/1
6 · The paper itself

Abstract

backgroundSubjective complaints of cognitive deficits are not necessarily consistent with objective evidence of cognitive impairment in Parkinson's disease (PD). Here we examined the factors associated with the objective-subjective cognitive discrepancy.

methodsWe consecutively enrolled 90 non-demented patients with PD who completed the Parkinson's Disease Cognitive Functional Rating Scale (subjective cognitive measure) and the Montreal Cognitive Assessment (MoCA; objective cognitive measure). The patients were classified as "Overestimators", "Accurate estimators", and "Underestimators" on the basis of the discrepancy between the objective vs. subjective cognitive measures. To identify the factors distinguishing these groups from each other, we used chi-square tests or one-way analyses of variance, completed by logistic and linear regression analyses.

resultsForty-nine patients (54.45%) were classified as "Accurate estimators", 29 (32.22%) as "Underestimators", and 12 (13.33%) as "Overestimators". Relative to the other groups, the "Underestimators" scored higher on the Fatigue Severity Scale (FSS), Beck Depression Inventory (BDI), and Parkinson Anxiety Scale (p < 0.01). Logistic regression confirmed that FSS and BDI scores distinguished the "Underestimators" group from the others (p < 0.05). Linear regression analyses also indicated that FSS and BDI scores positively related to objective-subjective cognitive discrepancy (p < 0.01). "Overestimators" scored lower than other groups on the MoCA's total score and attention and working memory subscores (p < 0.01).

conclusionIn more than 45% of consecutive non-demented patients with PD, we found a 'mismatch' between objective and subjective measures of cognitive functioning. Such discrepancy, which was related to the presence of fatigue and depressive symptoms and frontal executive impairments, should be carefully evaluated in clinical setting.

Indexed as

Cognition DisordersCognitive DysfunctionParkinson DiseaseCognitionHumansNeuropsychological TestsPsychiatric Status Rating ScalesCognitive impairmentDepressionFatigueMild cognitive impairmentSubjective cognitive decline

Identifiers

PMID33723623
PMCPMC8357714

What OpenQuestion holds

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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.