Evaluation of KDSQ-C's Reliability and Validity between the Subject Elderly and Caregiver

Lee, In Sook; Lee, Kwang Ok; Ko, Young

doi:10.12799/jkachn.2012.23.4.446

Cited by 4 publications

(4 citation statements)

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“…Using a cut‐off score of ≥6, the KDSQ‐C showed 79% sensitivity and 80% specificity for distinguishing nondemented from demented elderly (CDR 0.5 and CDR 1). In addition, there was an excellent agreement (Kappa index = 0.822) between self‐ratings and informant ratings on the KDSQ‐C in nondemented elderly …”

Section: Methodsmentioning

confidence: 82%

“…In addition, there was an excellent agreement (Kappa index = 0.822) between self-ratings and informant ratings on the KDSQ-C in nondemented elderly. 26 The AD8 23 is an informant-based measure that validly and reliably differentiates nondemented from demented individuals and is sensitive to the earliest signs of cognitive change. It consists of eight questions to rate change over the last several years (yes vs no) in memory, orientation, problem-solving abilities, and daily activities, ranging from 0 to 8.…”

Section: Assessment Of Cognitive Complaintsmentioning

confidence: 99%

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Self‐ and informant‐reported cognitive functioning and awareness in subjective cognitive decline, mild cognitive impairment, and very mild Alzheimer disease

Ryu

Kim

et al. 2019

Int J Geriat Psychiatry

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Objectives:The present study examined self-reports and informant reports of cognitive function and discrepancies between the two reporting methods in healthy controls (HC), subjective cognitive decline (SCD), mild cognitive impairment (MCI), and very mild Alzheimer disease (AD) using three questionnaires. Methods:The study included a total of 300 individuals (mean age: 74.4 ± 5.7 y), including 130 HC, 70 SCD, 51 MCI, and 49 very mild AD patients. Self-ratings and informant ratings of cognitive function were assessed using the Korean Dementia Screening Questionnaire-Cognition (KDSQ-C), AD8, and Subjective Memory Complaints Questionnaire (SMCQ). Awareness of cognitive functioning was measured on the basis of the discrepancy scores between self-reports and informant reports.Results: Group comparisons on questionnaire scores adjusting for age, education, and depressive symptoms showed that self-reports were lowest in HC than other

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Section: Methodsmentioning

confidence: 82%

Section: Assessment Of Cognitive Complaintsmentioning

confidence: 99%

Self‐ and informant‐reported cognitive functioning and awareness in subjective cognitive decline, mild cognitive impairment, and very mild Alzheimer disease

Ryu

Kim

et al. 2019

Int J Geriat Psychiatry

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“…Mild cognitive impairment (MCI) is a transitional state between normal cognition and dementia [ 6 , 7 ]. However, most screening tools, including the KDSQ, have been evaluated for their ability to make only dichotomous distinctions between normal cognition and dementia or between normal cognition and cognitive dysfunction [ 4 , 8 , 9 ]. In clinical settings, these dichotomous categories have not been always useful for classifying patients by graded stages of cognitive dysfunction.…”

Section: Introductionmentioning

confidence: 99%

Screening for Normal Cognition, Mild Cognitive Impairment, and Dementia with the Korean Dementia Screening Questionnaire

Lee

Han

Hwang

et al. 2018

Psychiatry Investig

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Objective The Korean Dementia Screening Questionnaire (KDSQ) is an informant-based instrument used to screen for cognitive dysfunction. However, its ability to only dichotomously discriminate between dementia and normal cognition has been previously investigated. This study investigated the ability of the KDSQ to classify not only dichotomous but also multiple stages of cognitive dysfunction. Methods We examined 582 participants. Receiver operating characteristic (ROC) curves were used to determine dichotomous classification parameters. Multi-category ROC surfaces were evaluated to classify the three stages of cognitive dysfunction. Results Dichotomous classification using the ROC curve analyses showed that the area under the curve was 0.92 for dementia for subjects without dementia and 0.96 for dementia in controls. Simultaneous multi-category classification analyses showed that the volume under the ROC surface (VUS) was 0.57 and that the derived optimal cut-off points were 2 and 8 for controls, MCI, and dementia. The estimated Youden index for the KDSQ was 0.48, and the derived optimal cut-off points were 5 and 10. The overall classification accuracy of the VUS and Youden index was 61.2% and 58.6%, respectively. Conclusion The KDSQ is useful for classifying dichotomous and multi-category stages of cognitive dysfunction.

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“…Hence, discrimination is not easy given the community elders who do not use this medical service or are difficult for the access even if having cognitive disorder. Accordingly, many dementia patients are visiting a hospital in a serious condition [8]. This suggests that there is a need to have an interest in the elderly's cognitive impairment in the dimension of community.…”

Section: Introductionmentioning

confidence: 99%

The Efficacy of Dementia Prevention Integrative Program for Cognitive function, Depression, and Quality of life in the Elderly Non-Dementia

Hyun¹,

Choi²,

Byeon³

et al. 2017

IJEWPM

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Evaluation of KDSQ-C's Reliability and Validity between the Subject Elderly and Caregiver

Cited by 4 publications

References 1 publication

Self‐ and informant‐reported cognitive functioning and awareness in subjective cognitive decline, mild cognitive impairment, and very mild Alzheimer disease

Self‐ and informant‐reported cognitive functioning and awareness in subjective cognitive decline, mild cognitive impairment, and very mild Alzheimer disease

Screening for Normal Cognition, Mild Cognitive Impairment, and Dementia with the Korean Dementia Screening Questionnaire

The Efficacy of Dementia Prevention Integrative Program for Cognitive function, Depression, and Quality of life in the Elderly Non-Dementia

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