주관적 기억장애, 인지기능, 그리고 우울증- 지역사회 거주노인에 대한 단면연구 -
Subjective Memory Impairment, Cognitive Function, and Depression - A Cross-sectional Study in a Community Dwelling Elderly Population -
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목 적:주관적 기억장애(Subjective memory impairment; SMI)와 연관된 인자들에 대한 연구는 일치된 결론을 이끌어내지 못하고 있다. 본 연구에서는 1) SMI와 인지기능, 우울증 그리고 제반 사회-인구학적 특징과의 연관성을 알아보고, 2) 인지기능의 장애 여부에 따라 그 연관성이 다른지 조사하고자 하였다.방 법:광주광역시에서 65세 이상의 지역사회 거주 노인들에 대한 연구가 시행되었다. SMI는 한 문항의 질문을 통해 평가되었으며, 이의 인지기능(Korean version of Mini-Mental State Examination; MMSE-K), 우울증(Korean form of Geriatric Depression Scale), 그리고 사회-인구학적 특징들과의 연관성이 조사되었다. 전체 대상은 인지기능 장애군과 정상군으로 나뉘어 분석이 다시 시행되었다.
Abstract
Objective: Research on the associated factors of subjective memory impairment (SMI) have reported conflicting findings. This study aimed to investigate the associations of SMI with objective cognitive performance, depression, and various socio-demographic characteristics and to measure possible differences in cognitively impaired and intact old peoples.Method: A community study of individuals aged 65 or over was conducted in Kwangju, South Korea. SMI was assessed by means of a single item question and its associations with cognitive function (Korean version of Mini-Mental State Examination; MMSE-K), depression (Korean form of Geriatric Depression Scale), and socio-demographic factors were investigated. Analyses were repeated for the cognitively impaired and intact samples separately.Results: Of 1,134 participants, 596 (53%) were categorized as having SMI. Depression, lower score on MMSE-K, and past manual occupation were associated with SMI. Further analyses for cognitively impaired and intact samples showed some different results. For the cognitively impaired sample (n=412), SMI was associated with depression and past manual occupation. For the cognitively intact sample (n=722), depression, lower score on MMSE-K, and male gender were significantly associated factors.Conclusion: Depression was consistently associated with SMI regardless of cognitive status. Other than depression, associated factor profiles differed between cognitively impaired and intact older populations.