정상, 경도인지장애, 중증인지장애 노인의 인지기능 비교 연구
A comparative study of cognitive function in the elderly with no cognitive impairement, mild cognitive impairment, and severe cognitive impairment
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초록
연구목적: 본 연구의 목적은 경도인지장애 노인의 인지적 특성, 치매가 진행되면서 변화되는 인지기능 양상을 알아보고자 실시되었다. 연구방법: 인지기능 검사는 정상 노인 238명, 경도인지장애 노인 72명, 중증인지장애 노인 164명을 대상 으로 수집되었다. 수집된 자료는 분산분석, 교차분석, Cohen’s d 공식을 이용하여 통계 처리하였다. 연구결과: 스트룹 단순 시행, 스트룹 간섭 시행, 단어 유창성, 단어 즉시회상, 단어 지연회상, 단어 지연재인, MMSE-K1 검사에서 경도인지장애 노인과 정상 노인들 간에 유의한 차이가 있었다. 스트룹 단순 시행, 숫자 바로 외우기, 기본 지식 문제, 단어 유창성, 그림 이름 대기, 보고 그리기, 단어 즉시회상, 단어 지연 회상, 단어 지연재인, MMSE-K1 검사에서 경도인지장애 노인과 중증인지장애 노인들 간에 유의한 차이가 있었다. 결론: 경도인지장애 노인은 객관적인 인지기능 지표에서도 정상 노화 과정과 확실히 차이가 있는 것으로 조사되었다. 인지기능 장애는 동시에 진행되는 것이 아니라 초기에 떨어지는 것도 있고 나중에 저하가 시작되는 것도 있었다.
Abstract
Objectives: The purpose of this study was to investigate the cognitive characteristics of the elderly with mild cognitive impairment(MCI) and the patterns of cognitive function that change as dementia progresses. Methods: Cognitive function tests were collected from 238 elderly with no cognitive impairement, 72 elderly with MCI, and 164 elderly with severe cognitive impairment(SCI). The collected data were statistically using analysis of variance, cross-analysis, and Cohen’s d formula. Results: Subjects with normal and MCI showed significant differences in the stroop simple trial, stroop intervention trial, word fluency, immediate recall, delayed recall, delayed recognition, and MMSE-K1. There were significant differences between MCI and SCI in the stroop simple trial, digits forward, information, word fluency, picture naming, figure coping, immediate recall, delayed recall, delayed, recognition, MMSE-K1. Conclusions: It was established that the MCI clearly differ from the normal aging process in the objective indicators of cognitive function. Cognitive dysfunction did not progress at the same time, but some initially showed decline while and some showed the decline later.
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