1. Please check and comment entries here.
Table of Contents

    Topic review

    MMSE and MoCA

    View times: 6
    Submitted by: Ponnusamy Subramaniam

    Definition

    Objective: Primary care clinicians in Asia employed the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) to aid dementia diagnosis post-stroke. Recent studies questioned their clinical utility in stroke settings for relying on verbal abilities and education level, as well as lack of consideration for aphasia and neglect. We aimed to review the clinical utility of the MMSE and MoCA for stroke patients in Asia and provide recommendations for clinical practice.

    1. Introduction

    The risk of dementia in the first year after stroke is 50% greater than in the general population [1] and about 40% of stroke patients will present with mild cognitive impairments [2]. The MMSE (Mini-Mental State Examination) [3] and MoCA (Montreal Cognitive Assessment) [4] are the most used screening tools for cognitive impairments after stroke [5]. Both screening tests were originally designed to screen for dementia and mild cognitive impairments (MCIs). The diagnostic criteria for these conditions are based on the cognitive presentation of Alzheimer’s disease (AD), where memory deficits are prominent [6][7]. However, unlike AD, stroke patients show more salient frontal/executive deficits, e.g., attention and cognitive flexibility [8][9]. The term vascular cognitive impairments (VCIs) was proposed to represent a continuum of cognitive deficits of vascular etiology [7] including post-stroke dementia (PSD) [10], thereby delineating it from AD.
    The different cognitive profiles of AD and stroke suggest that the MMSE and MoCA may not be useful in stroke settings, as they do not consider impairments intrinsic to stroke, i.e., aphasia, neglect, and apraxia [5][11][12][13][14][15]. For instance, both tests place a high load on verbal abilities, which can be problematic for aphasic patients in areas where language is required to perform well [16][17]. In contrast, stroke patients who retain their language abilities, such as those with right ischemic lesion, might give a false impression of normal cognition [18]. The MMSE seems to fare worse than the MoCA in detecting post-stroke cognitive impairments (PSCIs) due to its reliance on language [19]. For example, performance on calculation and attention in the MMSE varies across Asian countries [20], possibly because some languages have a higher phonological load for number processing [21].
    In addition to the inherent limitations of the MMSE and MoCA, it is also critical to select a valid cutoff score for PSCI due to its influence on detection accuracy. Many studies have found the cutoff of 26 in the MoCA [4] to be inadequate in addressing cognitive impairments in stroke settings. Rather, optimal values were shown to range from 19 to 27, conditional on whether screening was conducted in the acute or chronic phase of stroke [22][23]. Preliminary evidence in Asia suggests that the MoCA is more sensitive than the MMSE in predicting cognitive deficits after stroke [24][25][26][27]. However, only a few studies maintained methodological rigor in examining the optimal clinical cutoff for stroke patients. For example, education stratification in receiver operating characteristics (ROCs) was rarely applied [14]. This has a significant clinical impact, as many Asian studies report inadequate detection accuracy using the one additional point recommendation for the MoCA for patients with <12 years of education [28][29][30][31]. Furthermore, it is uncertain which cutoffs should be used in societies with greater educational disparities [32][33][34]. In brief, increasing evidence reveals that sociocultural considerations are indispensable in interpreting the results of the MMSE and MoCA.
    The brief and broad nature of the MMSE and MoCA render them practical and popular in clinical settings, particularly in developing countries in Asia where resources are limited. It is commonplace that only patients showing prominent functional impairments are referred for further neuropsychological evaluation. However, such services are often inaccessible to underserved groups in the community (e.g., poor health, low income, rural areas). Thus, accurate detection for PSCI is crucial while patients are in the hospital. Is it possible to balance the limitations of the MMSE and MoCA with practicality for the benefit of both patients and clinicians? This question is worthy of exploration due to the 5–15% higher prevalence of dementia due to stroke in Asia than in North America and Europe [35]. Although cognitive screening is part of stroke care protocol, whether the MMSE and MoCA are clinically useful in Asia remains unclear.
    The aim of this review is to compare the sensitivity and specificity of the MMSE and MoCA in Asia. Based on this, recommendations for future practice and research will be outlined. While there are other cognitive tests currently available—e.g., ACE-III (Addenbrooke’s Cognitive Examination 3rd Edition) [36] and the IQCODE (Informant Questionnaire for Cognitive Decline in the Elderly) [37]—this review focused on the MMSE and MoCA because (1) ACE-III was designed to differentiate AD and frontotemporal dementia, (2) the IQCODE is an informant-based structured questionnaire—as opposed to the MMSE and MoCA, which directly measure the patient’s cognitive function—and (3) the MMSE and MoCA remain the most well-known cognitive tests across multidisciplinary settings in Asia. Sensitivity and specificity were chosen as indices of detection accuracy because they are not dependent on the prevalence of PSCI in the population.

    2. MMSE and MoCA

    The search yielded 1306 records. After removing duplicates, 846 articles remained, and were screened by title and abstracts. Following this, 810 were excluded due to geographical locations, sample (e.g., dementia, Parkinson’s disease, brain injury), non-cognitive outcomes (e.g., functional ability), review papers, randomized controlled trials, or neuroimaging studies. This resulted in 48 articles for further full-text evaluation, of which 11 articles met the inclusion criteria and were included in this review; 7 of these studies were conducted in China, 3 in Singapore, and 1 in Korea. The National Institute of Neurological Disorders and Stroke–Canadian Stroke Network 5-Minute Protocol (NINDS-CSN 5) [38] was included as it consists of the original subtests in the MoCA, i.e., five-word memory task, six-item orientation, and one-letter phonemic fluency. Moreover, two of the three studies examining the NINDS-CNS 5-Minute reported ≥200 participants [39][40].

    2.1. Detection Accuracy of the MMSE and MoCA

    Four studies that compared the MMSE and MoCA showed equivalent sensitivity and specificity to identify PSCI [41][42][43][44]. However, only two studies [41][43] met the detection accuracy standard of 80% sensitivity and 60% specificity, as suggested by Stolwyk et al. [14]. In the work of Dong et al. [42], there was a substantial difference in sensitivity between the optimal (MMSE = 61%, MoCA = 69%) and recommended (MMSE = 71%, MoCA = 78%) cutoff scores. Detection accuracy improved after a processing speed test was added in the ROC analysis (sensitivity = 97–98%, specificity = 76–78%). Likewise, Zhu et al. [44] reported poor sensitivity for both tests (MMSE = 68%, MoCA = 64%). Studies that found equivalent detection accuracy for the MMSE and MoCA also recruited older patients (see Table 1). Out of the nine studies that examined the MoCA, six reported adequate sensitivity (78–97%) and specificity (64–90%). Only one study showed poor specificity [45], attributable to the ceiling effect among patients with higher education levels. Two [40][46] of the three studies that examined the NINDS-CNS 5 demonstrated adequate sensitivity (82–92%) and specificity (67–68%). Another study showed fair SE (70%) but good SP (82%) [39].
    Table 1. Summary of studies and covariates categorized by tests.
    MMSE                          
    Study Disease Language Study Design Sample Size Age Education NIHSS Time Since Stroke Cutoffs Sensitivity (95% CI) Specificity (95% CI) PPV NPV
    (%) (%)
    Dong 2012 VCI Preference Prospective 239 67.9 * 5.7 * 1 to 4 3 days ≤25/26 0.88 (0.77, 0.95) 0.66 (0.59, 0.73) 47 94
    Dong 2014 VCI Preference Prospective 400 64.3 * 6.3 * 0 to 1 2.4–3.4 months ≤26 0.71 (0.64, 0.77) 0.81 (0.74, 0.87) 84 67
    Shen 2016 VCI-ND Mandarin Case–control 104 70.6 * 8.7 3.16 ≤14 days ≤27/28 0.82 (0.70, 0.90) 0.78 (0.62, 0.89) 82 78
    Zhu 2020 VCI Mandarin Prospective 229 63.8 6* 1 ≤14 days ≤27 0.68 (0.58, 0.77) 0.82 (0.74, 0.88) 71 23
    MoCA                          
    Dong 2012 VCI Preference Prospective 239 67.9 * 5.7 * 1 to 4 3 days ≤21/22 0.88 (0.77, 0.95) 0.64 (0.57, 0.71) 45 94
    Tu 2013 VCI-ND, VD Changsha Case–control 470 69.4–73.2 6.3–8.1 * ? ≥3 months? ≤26/27 0.96 (0.91, 0.99) 0.76 (0.69, 0.82) 86 93
    Wu 2013 VCI-ND Mandarin Case-control 206 68.1 8.65 ? Acute? 22/23 0.97 (0.91, 0.99) 0.47 (0.37, 0.57) N/A N/A
    Dong 2014 VCI Preference Prospective 400 64.3 * 6.3 * 0 to 1 2.4–3.4 months ≤23 0.78 (0.71, 0.83) 0.80 (0.72, 0.86) 84 72
    Dong 2016 VCI-ND Preference Prospective 291 68.4 * 5.5* 1 to 4 2.6–4 days ≤20/21 0.83 (0.78, 0.88) 0.80 (0.68, 0.90) 50 95
    Shen 2016 VCI-ND Mandarin Case–control 104 70.6 * 8.7 3.16 ≤14 days ≤23/24 0.87 (0.75, 0.94) 0.76 (0.60, 0.87) 86 75
    Zuo 2016 VCI Mandarin Case–control 102 58.3 * Level * 1 10 days ≤22/23 0.85 (0.73, 0.93) 0.88 (0.74, 0.96) 91 80
    Liao 2021 VCI Mandarin Case–control 316 61.1 * Level * 2 6 months ≤24 0.63 (0.56, 0.70) 0.71 (0.63, 0.79) 74 60
    Zhu 2020 VCI Changsha Prospective 229 63.8 6 * 1 ≤14 days ≤21 0.64 (0.54, 0.74) 0.90 (0.83, 0.94) N/A N/A
    NINDS-                          
    CNS 5  
    Chen 2015 VCI Mandarin Case–control 80 62.9 7.2 * 2 10 months 24 0.92 (0.79, 0.98) 0.68 (0.52, 0.82) 73 90
    Dong 2016 VCI-ND Preference Prospective 291 68.4 * 5.5 * 1 to 4 2.6–4 days ≤7/8 0.70 (0.64, 0.76) 0.82 (0.70, 0.91) 49 92
    Lim 2017 VD Korean Prospective 308 69.1 * Level 5 3 months ≤6/7 0.82 (0.69, 0.91) 0.67 (0.61, 0.73) 33 95
    Wei 2020 VCI Mandarin Case–control 2989 63 Level 1.16 1–2 months ≤10 0.91 (0.89,0.92) 0.63 (0.60, 0.65) 71 87
    * Significant differences between comparison groups; VCI: vascular cognitive impairment; VCI-ND: vascular cognitive impairment, no dementia; VD: vascular dementia; CI: confidence interval; PPV: positive predictive value; NPV: negative predictive value; MMSE: Mini-Mental State Examination; MoCA: Montreal Cognitive Assessment; NINDS-CNS 5: The National Institute of Neurological Disorders and Stroke–Canadian Stroke Network 5-Minute Protocol; NIHSS: National Institutes of Health Stroke Scale.
     
     
    Qualitatively, studies showing adequate sensitivity and specificity had several characteristics: (1) shorter time interval between stroke and screening (i.e., ≤4 days), (2) older patients, and (3) lower dropout rates in prospective cohort designs (<30%).

    2.2. Covariates

    Although the MMSE and MoCA both appear adequate for detecting PSCI, there are several covariates to consider.

    2.2.1. Education

    Many studies (82%) reported significantly lower education in patients with PSCI. Despite the considerable education weightage on PSCI, only two studies stratified patients according to education in the ROC analysis [40][45]. The 12-year education cutoff for MoCA was found to be inadequate [47]; instead, a 6-year or primary education level cutoff better fit the Asian population [31][40][41][42][44][45]. Over half of the studies included in the review raised concerns over education’s effect on MoCA scores (see Table 2).
    Table 2. Methods for education adjustment across studies.
    MMSE        
    Study Adjusted Additional One Point Method Notes
    Dong 2012 Yes < primary level education Regression Cutoff scores did not differ between patients with lower (≤6 years) and higher educational levels
    Dong 2014 Yes < primary level education ROC analysis Cited lack of education stratification for cutoff as study limitation
    Shen 2016 No <12 years   Due to small sample size
    Zhu 2020 Yes <6 years ROC analysis  
    MoCA        
    Dong 2012 Yes < primary level education ROC analysis Cutoff scores did not differ between patients with lower (≤6 years) and higher educational levels
    Tu 2013 No     Regression analysis showed education’s effect
    Wu 2013 Yes <12 years Cutoff scores stratified by education level Not education-adjusted
    MoCA ≤ 22/23
    Education ≤ 6 years
    MoCA ≤ 15
    Education 6–12 years
    MoCA ≤ 22
    Education > 12 years
    MoCA ≤ 23
    Dong 2014 Yes < primary level education ROC analysis Cited lack of education stratification for cutoff as study limitation
    Dong 2016 Yes < primary level education ROC analysis Education-adjustment did not affect cutoff scores
    Shen 2016 No <12 years   Cutoff scores not adjusted for education
    Zuo 2016 No <12 years   Authors recommended education-adjusted cutoff scores for future studies
    Liao 2020 No <12 years   Authors recommended education-adjusted cutoff scores for future studies
    Zhu 2020 Yes <6 years ROC analysis MoCA is more suitable for educated individuals
    NINDS-CNS 5        
    Chen 2015 Yes Not applicable Analysis of variance Cutoff scores not adjusted for education
    Dong 2016 Yes Not applicable ROC analysis Education-adjustment did not affect cutoff scores
    Lim 2017 Yes Not applicable Logistic regression Categorized education as ≤6 years vs. >6 years
    MMSE: Mini-Mental State Examination; MoCA: Montreal Cognitive Assessment; NINDS-CNS 5: The National Institute of Neurological Disorders and Stroke–Canadian Stroke Network 5-Minute Protocol; ROC: receiving operating characteristic.

     

    2.2.2. Age

    Eighty percent of the studies that reported inadequate sensitivity and specificity for the MMSE and MoCA recruited younger stroke patients (61–64 years old). In comparison, studies that reported adequate sensitivity and specificity recruited older patients (68–73 years old). Overall, 73% of studies showed that patients with poorer cognitive outcomes were significantly older.

    2.2.3. Stroke Characteristics

    Seven studies (64%) recruited patients with mild stroke or TIA, and eight studies (73%) excluded patients with aphasia. Less than half of the studies reported stroke location [39][41][42][44][47], and only one study reported stroke lateralization [44]. Only two studies did not report stroke severity [31][45], i.e., using the NIHSS (National Institutes of Health Stroke Scale) [48]. The remaining studies reported

    3. Current Insights on MMSE

    While the MMSE and MoCA are widely used in stroke settings in Asia, this is the first review to address concerns about the psychometric properties of both tools for Asian stroke patients. An optimal cutoff score has the best trade-off between SE (true positive) and SP (true negative). However, to pool together the sensitivity and specificity of the MMSE and MoCA for a single cutoff score for the Asian population would undermine the diversity of cultures, ethnicities, and languages; the paucity of high-quality studies in other parts of Asia further deters this.
    Studies that directly compared the MMSE and MoCA found them to be equivalent in detecting PSCI, but at varying accuracy levels. In other words, despite their equivalence, some studies found both screening tests to be inadequate for stroke patients [42][44]. These studies reported large sample sizes (N = 229–400), over 50% dropout rate at follow-up, and younger patients. The extent to which these factors are statistically significant remained a question because of the limited number of studies (N = 4); nevertheless, high dropout rate can erroneously estimate PSCI, e.g., in aging studies, dropouts were prevalent among individuals with worse white matter integrity [49][50]. In a study by Dong et al. [42], sensitivity improved by approximately 20% after a visuomotor processing speed test was added in the ROC analysis. This aligns with recent studies suggesting visual processing speed as an underlying cognitive function that affects performance in other cognitive domains in neurocognitive disorders [51][52]. Further evidence is warranted in Asia to determine whether the addition of a visual processing speed task can improve the detection accuracy of the MMSE and MoCA in stroke settings.
    On the other hand, the MoCA generally showed adequate sensitivity and specificity for stroke patients. A closer examination of the findings supports the importance of education stratification in ROC analysis [53]. For example, many cognitive tasks in the MoCA (e.g., executive, memory, abstraction) were inadequate for stroke patients with higher education [45]. This can partly explain the poor specificity (47%) reported. It was postulated that some tasks in the MoCA are easy for patients with higher levels of education, risking an underestimation of PSCI. Arguably, a recent study in Israel found that the MoCA was difficult even for healthy and highly educated older adults [54]. In contrast, a floor effect was reported for stroke patients with lower education, suggesting that the test items in MoCA are too difficult for this group [44]. Similar findings have been reported in previous studies [7][22][55][56][57]. In this light, what may potentially contribute to the observed limitations? While sociocultural differences and stroke characteristics must be acknowledged, it is difficult to ignore the limitation of global cognitive screening tests—using a universal cutoff score to identify cognitive deficits. Recent evidence points towards domain-specific screening tests that minimize verbal requirements and emphasize clinical utility, e.g., informing clinicians of potential rehabilitative targets [11].
    The studies that found adequate sensitivity also reported older patient samples, concurrent with epidemiological studies showing poorer cognitive outcomes after stroke with increasing age [1][56][58]. It is plausible that the MMSE and MoCA appear capable of accurate detection when results merely reflect a sociodemographic artefact. However, the age factor can also be intertwined with education, e.g., it was not mandatory for older individuals to obtain a formal education in past decades in developing countries [59].
    One way to accommodate the aforementioned challenges is to provide normative data stratified by age and education, but this is financially demanding and time-consuming for developing countries to achieve. It may be feasible to pool data across Asia to provide appropriate age- and education-based cutoff scores. It may also be relevant to supplement the MoCA with additional cognitive tests, e.g., for processing speed [42][60]. Nevertheless, concern arises regarding qualification and skills, as administering additional cognitive tests means enlisting the expertise of neuropsychologists. Misinterpretation of results and liability due to misreporting can prove to be counterproductive. A possible alternative is to minimize the use of single cutoff scores and shift towards domain-specific scores, as increasing evidence shows that this provides a more sensitive measure for PSCI [12][61][57]. Clinicians are recommended to adjust cutoff scores for the MoCA based on education level, i.e., an additional 1 point for <6 years. Previous studies in Singapore and China further support this recommendation [28][45]. More studies are warranted to determine whether these recommendations improve detection accuracy for PSCI. For instance, illiteracy can be a potential confounding factor in community settings [55].
     

    The entry is from 10.3390/ijerph18178962

    References

    1. Pendlebury, S.T.; Rothwell, P.M. Incidence and prevalence of dementia associated with transient ischaemic attack and stroke: Analysis of the population-based Oxford Vascular Study. Lancet Neurol. 2019, 18, 248–258.
    2. Sexton, E.; McLoughlin, A.; Williams, D.J.; Merriman, N.A.; Donnelly, N.; Rohde, D.; Hickey, A.; Wren, M.A.; Bennett, K. Systematic review and meta-analysis of the prevalence of cognitive impairment no dementia in the first year post-stroke. Eur. Stroke J. 2019, 4, 160–171.
    3. Folstein, M.F.; Folstein, S.E.; McHugh, P.R. "Mini-mental state": A practical method for grading the cognitive state of patients for the clinician. J. Psychiatr. Res. 1975, 12, 189–198.
    4. Nasreddine, Z.S.; Phillips, N.A.; Bédirian, V.; Charbonneau, S.; Whitehead, V.; Collin, I.; Cummings, J.L.; Chertkow, H. The Montreal Cognitive Assessment, MoCA: A brief screening tool for mild cognitive impairment. J. Am. Geriatr. Soc. 2005, 53, 695–699.
    5. Quinn, T.J.; Elliott, E.; Langhorne, P. Cognitive and mood assessment tools for use in stroke. Stroke 2018, 49, 483–490.
    6. O’Brien, J.T.; Erkinjuntti, T.; Reisberg, B.; Roman, G.; Sawada, T.; Pantoni, L.; Bowler, J.V.; Ballard, C.; DeCarli, C.; Gorelick, P.B.; et al. Vascular cognitive impairment. Lancet Neurol. 2003, 2, 89–98.
    7. Sachdev, P.; Kalaria, R.; O’Brien, J.; Skoog, I.; Alladi, S.; Black, S.E.; Blacker, D.; Blazer, D.G.; Chen, C.; Chui, H. Diagnostic criteria for vascular cognitive disorders: A VASCOG statement. Alzheimer Dis. Assoc. Disord. 2014, 28, 206–218.
    8. Sachdev, P.S.; Brodaty, H.; Valenzuela, M.J.; Lorentz, L.; Looi, J.C.; Wen, W.; Zagami, A.S. The neuropsychological profile of vascular cognitive impairment in stroke and TIA patients. Neurology 2004, 62, 912–919.
    9. American Psychiatric Association. Diagnostic and Statistical Manual, 5th ed.; DSM-APA: Washington, DC, USA, 2013; pp. 621–624.
    10. Mijajlović, M.D.; Pavlović, A.; Brainin, M.; Heiss, W.D.; Quinn, T.J.; Ihle-Hansen, H.B.; Hermann, D.M.; Assayag, E.B.; Richard, E.; Thiel, A.; et al. Post-stroke dementia a comprehensive review. BMC Med. 2017, 15, 11.
    11. Demeyere, N.; Riddoch, M.J.; Slavkova, E.D.; Bickerton, W.L.; Humphreys, G.W. The Oxford Cognitive Screen (OCS): Validation of a stroke-specific short cognitive screening tool. Psychol. Ass. 2015, 27, 883–894.
    12. Demeyere, N.; Riddoch, M.J.; Slavkova, E.D.; Jones, K.; Reckless, I.; Mathieson, P.; Humphreys, G.W. Domain-specific versus generalized cognitive screening in acute stroke. J. Neurol. 2016, 263, 306–315.
    13. Rodrigues, J.C.; Becker, N.; Beckenkamp, C.L.; Miná, C.S.; de Salles, J.F.; Bandeira, D.R. Psychometric properties of cognitive screening for patients with cerebrovasculardiseases A systematic review. Dement. Neuropsychol. 2019, 13, 31–43.
    14. Stolwyk, R.J.; O’Neill, M.H.; McKay, A.J.; Wong, D.K. Are cognitive screening tools sensitive and specific enough for use after stroke? A systematic literature review. Stroke 2014, 45, 3129–3134.
    15. Van Heugten, C.M.; Walton, L.; Hentschel, U. Can we forget the Mini-Mental State Examination? A systematic review of the validity of cognitive screening instruments within one month after stroke. Clin. Rehab. 2015, 29, 694–704.
    16. Razali, R.; Jean-Li, L.; Jaffar, A.; Ahmad, M.; Shah, S.A.; Ibrahim, N.; Din, N.C.; Nik Jaafar, N.R.; Midin, M.; Sidi, H. Is the Bahasa Malaysia version of the Montreal Cognitive Assessment (MoCA-BM) a better instrument than the Malay version of the Mini Mental State Examination (M-MMSE) in screening for mild cognitive impairment (MCI) in the elderly? Compr. Psychiatr. 2014, 55, S70–S75.
    17. Rosli, R.; Tan, M.P.; Gray, W.K.; Subramanian, P.; Chin, A.V. Cognitive assessment tools in Asia: A systematic review. Int. Psychogeriatr. 2016, 28, 189–210.
    18. Chan, E.; Altendorff, S.; Healy, C.; Werring, D.J.; Cipolotti, L. The test accuracy of the Montreal Cognitive Assessment (MoCA) by stroke lateralisation. J. Neurol. Sci. 2017, 373, 100–104.
    19. Nys, G.M.; van Zandvoort, M.J.; de Kort, P.L.; Jansen, B.P.; Kappelle, L.J.; de Haan, E.H. Restrictions of the Mini-Mental State Examination in acute stroke. Arch. Clin. Neuropsychol. 2005, 20, 623–629.
    20. Shim, Y.S.; Yang, D.W.; Kim, H.J.; Park, Y.H.; Kim, S. Characteristic differences in the Mini-Mental State Examination used in Asian countries. BMC Neurol. 2017, 17, 141.
    21. Tang, Y.; Zhang, W.; Chen, K.; Feng, S.; Ji, Y.; Shen, J.; Reiman, E.M.; Liu, Y. Arithmetic processing in the brain shaped by cultures. Proc. Natl. Acad. Sci. USA 2006, 103, 10775–10780.
    22. Chiti, G.; Pantoni, L. Use of Montreal Cognitive Assessment in patients with stroke. Stroke 2014, 45, 3135–3140.
    23. Godefroy, O.; Fickl, A.; Roussel, M.; Auribault, C.; Bugnicourt, J.M.; Lamy, C.; Canaple, S.; Petitnicolas, G. Is the Montreal Cognitive Assessment superior to the Mini-Mental State Examination to detect poststroke cognitive impairment? A study with neuropsychological evaluation. Stroke 2011, 42, 1712–1716.
    24. Suda, S.; Muraga, K.; Ishiwata, A.; Nishimura, T.; Aoki, J.; Kanamaru, T.; Suzuki, K.; Sakamoto, Y.; Katano, T.; Nagai, K.; et al. Early cognitive assessment following acute stroke: Feasibility and comparison between Mini-Mental State Examination and Montreal Cognitive Assessment. J. Stroke Cerebrovasc. Dis. 2020, 29, 104688.
    25. Tan, H.H.; Xu, J.; Teoh, H.L.; Chan, B.P.; Seet, R.C.; Venketasubramanian, N.; Sharma, V.K.; Chen, C.L.; Dong, Y. Decline in changing Montreal Cognitive Assessment (MoCA) scores is associated with post-stroke cognitive decline determined by a formal neuropsychological evaluation. PLoS ONE 2017, 12, e0173291.
    26. Xu, Q.; Cao, W.W.; Mi, J.H.; Yu, L.; Lin, Y.; Li, Y.S. Brief screening for mild cognitive impairment in subcortical ischemic vascular disease: A comparison study of the Montreal Cognitive Assessment with the Mini-Mental State Examination. Eur. Neurol. 2014, 71, 106–114.
    27. Zhang, H.; Zhang, X.N.; Zhang, H.L.; Huang, L.; Chi, Q.Q.; Zhang, X.; Yun, X.P. Differences in cognitive profiles between traumatic brain injury and stroke: A comparison ofthe Montreal Cognitive Assessment and Mini-Mental State Examination. CJT 2016, 19, 271–274.
    28. Dong, Y.; Sharma, V.K.; Chan, B.P.; Venketasubramanian, N.; Teoh, H.L.; Seet, R.C.; Tanicala, S.; Chan, Y.H.; Chen, C. The Montreal Cognitive Assessment (MoCA) is superior to the Mini-Mental State Examination (MMSE) for the detection of vascular cognitive impairment after acute stroke. J. Neurol. Sci. 2010, 299, 15–18.
    29. Julayanont, P.; Tangwongchai, S.; Hemrungrojn, S.; Tunvirachaisakul, C.; Phanthumchinda, K.; Hongsawat, J.; Suwichanarakul, P.; Thanasirorat, S.; Nasreddine, Z.S. The Montreal Cognitive Assessment-Basic: A screening tool for mild cognitive impairment in illiterate and low-educated elderly adults. J. Am. Geriatr. Soc. 2015, 63, 2550–2554.
    30. Ng, T.P.; Feng, L.; Lim, W.S.; Chong, M.S.; Lee, T.S.; Yap, K.B.; Tsoi, T.; Liew, T.M.; Gao, Q.; Collinson, S.; et al. Montreal Cognitive Assessment for screening mild cognitive impairment: Variations in test performance and scores by education in Singapore. Dement. Geriatr. Cogn. Disord. 2015, 39, 176–185.
    31. Tu, Q.Y.; Jin, H.; Ding, B.R.; Yang, X.; Lei, Z.H.; Bai, S.; Zhang, Y.D.; Tang, X.Q. Reliability, validity, and optimal cutoff score of the montreal cognitive assessment (Changsha version) in ischemic cerebrovascular disease patients of Hunan Province, China. Dement. Geriatr. Cogn. Disord. 2013, 3, 25–36.
    32. Gómez, F.; Zunzunegui, M.; Lord, C.; Alvarado, B.; García, A. Applicability of the MoCA-S test in populations with little education in Colombia. Int. J. Geriatr. Psychiatr. 2013, 28, 813–820.
    33. Rossetti, H.C.; Lacritz, L.H.; Hynan, L.S.; Cullum, C.M.; Van Wright, A.; Weiner, M.F. Montreal Cognitive Assessment performance among community-dwelling African Americans. Arch. Clin. Neuropsychol. 2017, 32, 238–244.
    34. Santoso, L.; Erkkinen, E.; Adon, C. The Montreal Cognitive Assessment may not be and effective screening tool in low income countries with education inequality (P1.278). Neurology 2016, 86, P1.
    35. Wolters, F.J.; Ikram, M.A. Epidemiology of Vascular Dementia. Arterioscler. Thromb. Vasc. Biol. 2019, 39, 1542–1549.
    36. Hsieh, S.; Schubert, S.; Hoon, C.; Mioshi, E.; Hodges, J.R. Validation of the Addenbrooke’s Cognitive Examination III in frontotemporal dementia and Alzheimer’s disease. Dement. Geriatr. Cogn. Disord. 2013, 36, 242–250.
    37. Fuh, J.L.; Teng, E.L.; Lin, K.N.; Larson, E.B.; Wang, S.J.; Liu, C.Y.; Chou, P.; Kuo, B.I.; Liu, H.C. The Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) as a screening tool for dementia for a predominantly illiterate Chinese population. Neurology 1995, 45, 92–96.
    38. Hachinski, V.; Iadecola, C.; Petersen, R.C.; Breteler, M.M.; Nyenhuis, D.L.; Black, S.E.; Powers, W.J.; De Carli, C.; Merino, J.G.; Kalaria, R.N.; et al. National Institute of Neurological Disorders and Stroke-Canadian Stroke Network vascular cognitive impairment harmonization standards. Stroke 2006, 37, 2220–2241.
    39. Dong, Y.; Xu, J.; Chan, B.P.; Seet, R.C.; Venketasubramanian, N.; Teoh, H.L.; Sharma, V.K.; Chen, C.L. The Montreal Cognitive Assessment is superior to National Institute of Neurological Disease and Stroke-Canadian Stroke Network 5-minute protocol in predicting vascular cognitive impairment at 1 year. BMC Neurol. 2016, 16, 46.
    40. Lim, J.S.; Oh, M.S.; Lee, J.H.; Jung, S.; Kim, C.; Jang, M.U.; Lee, S.H.; Kim, Y.J.; Kim, Y.; Park, J.; et al. Prediction of post-stroke dementia using NINDS-CSN 5-minute neuropsychology protocol in acute stroke. Int. Psychogeriatr. 2017, 29, 777–784.
    41. Dong, Y.; Venketasubramanian, N.; Chan, B.P.; Sharma, V.K.; Slavin, M.J.; Collinson, S.L.; Sachdev, P.; Chan, Y.H.; Chen, C.L. Brief screening tests during acute admission in patients with mild stroke are predictive of vascular cognitive impairment 3-6 months after stroke. J. Neurol. Neurosurg. Psychiatr. 2012, 83, 580–585.
    42. Dong, Y.; Slavin, M.J.; Chan, B.P.; Venketasubramanian, N.; Sharma, V.K.; Collinson, S.L.; Sachdev, P.S.; Chen, C.L. Improving screening for vascular cognitive impairment at three to six months after mild ischemic stroke and transient ischemic attack. Int. Psychogeriatr. 2014, 26, 787–793.
    43. Shen, Y.J.; Wang, W.A.; Huang, F.D.; Chen, J.; Liu, H.Y.; Xia, Y.L.; Han, M.; Zhang, L. The use of MMSE and MoCA in patients with acute ischemic stroke in clinical. Int. J. Neurosci. 2016, 126, 442–447.
    44. Zhu, Y.; Zhao, S.; Fan, Z.; Li, Z.; He, F.; Lin, C.; Topatana, W.; Yan, Y.; Liu, Z.; Chen, Y.; et al. Evaluation of the Mini-Mental State Examination and the Montreal Cognitive Assessment for predicting post-stroke cognitive impairment during the acute phase in Chinese minor stroke patients. Front. Aging Neurosci. 2020, 12, 236.
    45. Wu, Y.; Wang, M.; Ren, M.; Xu, W. The effects of educational background on Montreal Cognitive Assessment screening for vascular cognitive impairment, no dementia, caused by ischemic stroke. J. Clin. Neurosci. 2013, 20, 1406–1410.
    46. Chen, X.; Fan, X.; Zhao, L.; Duan, L.; Wang, Z.; Han, Y.; Dai, Q.; Liu, D.; Zhang, X.; Chen, Z.; et al. Telephone-based cognitive screening for stroke patients in China. Int. Psychogeriatr. 2015, 27, 2079–2085.
    47. Zuo, L.; Dong, Y.; Zhu, R.; Jin, Z.; Li, Z.; Wang, Y.; Zhao, X.; Sachdev, P.; Zhang, W.; Wang, Y. Screening for cognitive impairment with the Montreal Cognitive Assessment in Chinese patients with acute mild stroke and transient ischaemic attack: A validation study. BMJ Open 2016, 6, e011310.
    48. Brott, T.; Adams, H.P., Jr.; Olinger, C.P.; Marler, J.R.; Barsan, W.G.; Biller, J.; Spilker, J.; Holleran, R.; Eberle, R.; Hertzberg, V. Measurements of acute cerebral infarction: A clinical examination scale. Stroke 1989, 20, 864–870.
    49. Liao, X.; Zuo, L.; Pan, Y.; Xiang, X.; Meng, X.; Li, H.; Zhao, X.; Wang, Y.; Shi, J.; Wang, Y. Screening for cognitive impairment with the Montreal Cognitive assessment at six months after stroke and transient ischemic attack. Neurol. Res. 2021, 43, 15–21.
    50. Glymour, M.M.; Chêne, G.; Tzourio, C.; Dufouil, C. Brain MRI markers and dropout in a longitudinal study of cognitive aging: The Three-City Dijon Study. Neurology 2012, 79, 1340–1348.
    51. Khaligh-Razavi, S.M.; Habibi, S.; Sadeghi, M.; Marefat, H.; Khanbagi, M.; Nabavi, S.M.; Sadeghi, E.; Kalafatis, C. Integrated cognitive sssessment: Speed and accuracy of visual processing as a reliable proxy to cognitive performance. Sci. Rep. 2019, 9, 1102.
    52. Su, C.Y.; Wuang, Y.P.; Lin, Y.H.; Su, J.H. The role of processing speed in post-stroke cognitive dysfunction. Arch. Clin. Neuropsychol. 2014, 30, 148–160.
    53. O’Driscoll, C.; Shaikh, M. Cross-cultural applicability of the Montreal Cognitive Assessment (MoCA): A systematic review. J. Alzheimer’s Dis. 2017, 58, 789–801.
    54. Elkana, O.; Tal, N.; Oren, N.; Soffer, S.; Ash, E.L. Is the cutoff of the MoCA too high? Longitudinal data from highly educated older adults. J. Geriatr. Psychiatr. Neurol. 2020, 33, 155–160.
    55. Din, N.C.; Shahar, S.; Zulkifli, B.H.; Razali, R.; Vryn, C.A.; Omar, A. Validation and optimal cut-off scores of the Bahasa Malaysia version of the Montreal Cognitive Assessment (MoCA-BM) for mild cognitive impairment among community dwelling older adults in Malaysia. Sains Malaysiana 2016, 45, 1337–1343.
    56. Gottesman, R.F.; Hillis, A.E. Predictors and assessment of cognitive dysfunction resulting from ischaemic stroke. Lancet Neurol. 2010, 9, 895–905.
    57. Robotham, R.J.; Riis, J.O.; Demeyere, N. A Danish version of the Oxford cognitive screen: A stroke-specific screening test as an alternative to the MoCA. Neuropsychol. Dev. Cogn. 2020, 27, 52–65.
    58. Levine, D.A.; Wadley, V.G.; Langa, K.M.; Unverzagt, F.W.; Kabeto, M.U.; Giordani, B.; Howard, G.; Howard, V.J.; Cushman, M.; Judd, S.E.; et al. Risk factors for poststroke cognitive decline: The REGARDS study (Reasons for Geographic and Racial Differences in Stroke). Stroke 2018, 49, 987–994.
    59. Freitas, S.; Simões, M.R.; Alves, L.; Santana, I. Montreal Cognitive Assessment: Influence of sociodemographic and health variables. Archv. Clin. Neuropsych. 2012, 27, 165–175.
    60. Pendlebury, S.T.; Mariz, J.; Bull, L.; Mehta, Z.; Rothwell, P.M. MoCA, ACE-R, and MMSE versus the National Institute of Neurological Disorders and Stroke-Canadian Stroke Network Vascular Cognitive Impairment Harmonization Standards Neuropsychological Battery after TIA and stroke. Stroke 2012, 43, 464–469.
    61. Mancuso, M.; Demeyere, N.; Abbruzzese, L.; Damora, A.; Varalta, V.; Pirrotta, F.; Antonucci, G.; Matano, A.; Caputo, M.; Caruso, M.G.; et al. Using the Oxford Cognitive Screen to Detect Cognitive Impairment in Stroke Patients: A Comparison with the Mini-Mental State Examination. Front. Neurol. 2018, 9, 101.
    More