| 1. |
- Classon, Elisabet, et al.
(författare)
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A quick test of cognitive speed (AQT) : regression-based norms for cognitively healthy 80 to 94-year olds
- 2022
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Ingår i: Aging, Neuropsychology and Cognition. - : ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD. - 1382-5585 .- 1744-4128. ; 29:5, s. 820-839
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Tidskriftsartikel (refereegranskat)abstract
- Slowed processing speed is part of normal aging but also a symptom of many diseases, including dementia. A Quick Test of Cognitive Speed (AQT) consists of three conditions: color naming (AQT1), form naming (AQT2) and dual color-form naming (AQT3) and offers a user-friendly assessment of processing speed that is used internationally to identify cognitive impairment in elderly patients. Appropriate age-norms have however been lacking. This study provides regression-based norms derived from a Swedish sample of 158 cognitively healthy 80 to 94-year olds. The results show age effects in all three conditions, a non-linear education effect in AQT1, and age by gender interactions in AQT2 and AQT3: men performed worse with increasing age, but women remained on a par. However, irrespective of age and gender, AQT2 and AQT3 mean raw and predicted scores were slower than the hitherto recommended cutoff criteria for suspected cognitive impairment.
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| 2. |
- Classon, Elisabet, et al.
(författare)
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Montreal Cognitive Assessment: Normative Data for Cognitively Healthy Swedish 80-to 94-Year-Olds
- 2022
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Ingår i: Journal of Alzheimer's Disease. - : IOS PRESS. - 1387-2877 .- 1875-8908. ; 87:3, s. 1335-1344
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Tidskriftsartikel (refereegranskat)abstract
- Background: The Montreal Cognitive Assessment (MoCA) is sensitive to cognitive impairment; however, it is also sensitive to demographic and socio-cultural factors. This necessitates reliable sub-population norms, but these are often lacking for older adults. Objective: To present demographically adjusted regression-based MoCA norms for cognitively healthy Swedish older adults. Methods: A pseudo-random sample of community-dwelling 80- to 94-year-olds, stratified by age and gender, was invited to the study. Initial telephone interviews and medical records searches (n = 218) were conducted to screen for cognitive impairment. N= 181 eligible participants were administered a protocol including the Swedish version of the MoCA and assessments of global cognition (Mini-Mental State Examination, MMSE) and depression (Patient Health Questionnaire-9, PHQ-9). Individuals scoring in the range of possible cognitive impairment on the MMSE or more than mild depression on the PHQ-9 were excluded (n = 23); three discontinued the test-session. Results: Norms were derived from the remaining n = 158. They were evenly distributed by gender, on average 85 years old, and with a mean education of 11 years. MoCA scores were independently influenced by age and education, together explaining 17.2% of the total variance. Higher age and lower education were associated with lower performance and 46% performed below the original cut-off (< 26/30). Conclusion: The negative impact of increasing age on MoCA performance continues linearly into the nineties in normal aging. Demographic factors should be considered when interpreting MoCA performance and a tool for computing demographically corrected standard scores is provided.
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| 3. |
- Fällman, Katarina, 1984-, et al.
(författare)
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Normative data for the oldest old: Trail Making Test A, Symbol Digit Modalities Test, Victoria Stroop Test and Parallel Serial Mental Operations
- 2020
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Ingår i: Aging, Neuropsychology and Cognition. - : ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD. - 1382-5585 .- 1744-4128. ; 27:4, s. 567-550
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Tidskriftsartikel (refereegranskat)abstract
- Normative data for evaluating cognitive function in the oldest old, aged 85 years and above, are currently sparse. The normative values used in clinical practice are often derived from younger old persons, from small sample sizes or from broad age spans (e.g. amp;gt;75 years) resulting in a risk of misjudgment in assessments of cognitive decline. This longitudinal study presents normative values for the Trail Making Test A (TMT-A), the Symbol Digit Modalities Test (SDMT), the Victoria Stroop Test (VST) and the Parallel Serial Mental Operations (PaSMO) from cognitively intact Swedes aged 85 years and above. 207 participants, born in 1922, were tested at 85, 90 (n = 68) and 93 (n = 35) years of age with a cognitive screening test battery. The participants were originally recruited for participation in the Elderly in Linkoping Screening Assessment. Normative values are presented as mean values and standard deviations, with and without adjustment for education. There were no clinically important differences between genders, but education had a significant effect on test results for the 85-year-olds. Age effects emerged in analyses of those participants who completed the entire study and were evident for TMT-A, SDMT, VST1 and PaSMO. When comparisons can be made, our results are in accordance with previous data for TMT-A, SDMT and VST, and we present new normative values for PaSMO.
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| 4. |
- Fällman, Katarina, et al.
(författare)
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Swedish normative data and longitudinal effects of aging for older adults : The Boston Naming Test 30-item and a short version of the Token Test
- 2022
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Ingår i: Applied neuropsychology. Adult. - : Routledge; Taylor & Francis. - 2327-9095 .- 2327-9109.
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Tidskriftsartikel (refereegranskat)abstract
- Naming ability and verbal comprehension are cognitive functions that may be affected both by normal aging and by disease. Neuropsychological testing is crucial to evaluate changes in language ability and reliable normative data for all ages are needed. We present clinically useful test norms, together with subsample analysis of longitudinal effects of aging, for two robust and well-known tests that evaluate naming ability and verbal comprehension where the present norms for older adults (aged 85 and older) are sparse or missing. Participants (n = 338) from a Swedish population-based study, the Elderly in Linkoping Screening Assessment, were cognitively evaluated with a cognitive screening battery at the age of 85 years and followed to the age of 93 years. Normative data at age 85 years were calculated from a sample (n = 207) that was determined as cognitively healthy after application of rigorous exclusion criteria. Effects of normal aging were investigated by analyzing follow-up performance at age 90 and 93 years for the subsample of cognitively healthy that completed the entire study. The evaluated tests in this study are Swedish versions of the Boston Naming Test 30-item Odd Version (BNT-30) and a short form of the Token Test, Part V (TokV). Analyzes of effects of aging showed that performance decreased with age for BNT-30, but not for TokV. Higher education was associated with better performance in both tests and men performed better than women on the BNT-30. Results also showed naming ability to be more sensitive to aging than verbal comprehension.
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