Validation of the Czech version of the SIMS using a clinical sample of patients with amnestic MCI and dementia

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F25%3A10504908" target="_blank" >RIV/00216208:11110/25:10504908 - isvavai.cz</a>

Result on the web

<a href="https://www.researchgate.net/publication/396524687_Validation_of_the_Czech_version_of_the_SIMS_using_a_clinical_sample_of_patients_with_amnestic_MCI_and_dementia" target="_blank" >https://www.researchgate.net/publication/396524687_Validation_of_the_Czech_version_of_the_SIMS_using_a_clinical_sample_of_patients_with_amnestic_MCI_and_dementia</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Validation of the Czech version of the SIMS using a clinical sample of patients with amnestic MCI and dementia

Original language description

Introduction: The Structured Inventory of Malingered Symptomatology (SIMS) is a 75-item inventory that focuses on the simulation detection of five areas of psychopathology. SIMS is a screening tool for the simulation detection of cognitive and psychiatric complaints in a broader context (e.g., forensic and neuropsychological examinations) [1]. Objective: The aim of the study was the validation of the Czech version of the SIMS [2] using a clinical sample of patients with memory impairment - patients with mild cognitive impairment (MCI) and patients with dementia. We focused on the validation of two specific SIMS subscales - Amnestic disorder (AM) and Neurological impairment (NI). Participants and Methods: From the total sample of 199 participants, 141 respondents were included in the final analysis, ensuring that the research groups did not differ in terms of socio-demographic characteristics. The SIMS method was completed by three research samples: 1) 38 patients with memory impairment, including 23 patients with MCI and 15 patients with dementia who completed the SIMS honestly. The etiology was mainly Alzheimer&apos;s disease. 2) 53 healthy elderly volunteers - the simulation group. 3) 50 healthy elderly volunteers - honest respondents (HR). The mean age of the participants was 71.6 years (SD = 6.72 years). The group of patients and the HR group completed SIMS truthfully, while the simulation group was asked to feign amnestic disorder and neurological impairment according to a predetermined scenario [3]. Results: A statistical analysis revealed that the research groups significantly differed on all SIMS scales, including AM scale and NI scale. The simulation group had the highest scores on all SIMS scales compared to the other two groups. No SIMS scale scores were significantly different between MCI and dementia patients. ROC analysis for the patient group and the simulation group outcomes showed the appropriate cut-off scores for the AM &gt; 6 scale with 92% sensitivity and 89% specificity and for the NI &gt; 4 scale with 100% sensitivity and 89% specificity. Discussion: In the context of the present study, it was hypothesized that the simulation group would have significantly higher total SIMS scores and AM and NI scale scores than the group of healthy honest responders and the group of patients. At the same time, it was hypothesized that the scores of patients and honest respondents would not differ significantly. With the exception of the AM scale, the median scores of all scales for the HR and patient groups do not exceed the original cut-off scores proposed by the author of the method [1]. Based on the ROC analysis, it may be appropriate to consider adjusting the cut-off scores of the SIMS scales for use in this clinical population. Conclusions: The results of the validation study indicate that the SIMS is an appropriate tool for use in the clinical population with memory impairment in brain disorders such as dementia and MCI. For use in this clinical population, it may be appropriate to consider adjusting the cut-off scores for SIMS scales. References: [1] Widows, M.R., Smith, G.P., 2005. Structured Inventory of Malingered Symptomatology (SIMS). Psychological Assessment Resources, Florida. [2] Krámská, L., Krejčová, M., 2023. Strukturovaný inventář simulovaných příznaků (SIMS) - česká adaptace. Hogrefe - Testcentrum, Prague. [3] Rogers, R., Robinson, E.V., Gillard, N.D., 2014. The SIMS Screen for Feigned Mental Disorders: the development of detection-based scales. Behav. Sci. Law 32(4), 455-66.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

30300 - Health sciences

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů