Subjective memory complaint and depressive symptoms among older adults in Portugal

Abstract

Older adults report subjective memory complaints (SMCs) but whether these are related to depression remains controversial. In this study we investigated the relationship between the SMCs and depression and their predictors in a sample of old adults. Methods. This cross-sectional study enrolled 620 participants aged 55 to 96 years (74.04 ± 10.41). Outcomemeasures included a sociodemographic and clinical questionnaire, a SMC scale (QSM), a Geriatric Depression Scale (GDS), aMini-Mental StatusExamination(MMSE), andaMontrealCognitiveAssessment(MoCA). Results.TheQSMmeantotal score for themain results suggests that SMCs are higher in old adults with depressed symptoms, comparatively to nondepressed old adults. The GDS scores were positively associated with QSMbut negatively associated with education, MMSE, andMoCA. GDS scores predicted almost 63.4% of variance. Scores on QSM andMoCA are significantly predicted by depression symptomatology. Conclusion. Depression symptoms, lower education level, and older age may be crucial to the comprehension of SMCs. The present study suggested that depression might play a role in the SMCs of the older adults and its treatment should be considered.