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. 2019 Mar 13;9(1):152-162.
doi: 10.1159/000497222. eCollection 2019 Jan-Apr.

Subjective Cognitive Decline in the Community Is Affected at Multiple Aspects of Mental Health and Life Quality: A Cross-Sectional Study of the Community Medicine of Keelung Chang Gung Memorial Hospital

Yi-Chia Wei  1   2   3 , Li-Yuan Huang  3   4   5 , Chih-Ken Chen  3   6 , Chemin Lin  3   6 , Yu-Chiau Shyu  3 , Yao-Liang Chen  3   7 , Wen-Yi Huang  1 , Ching-Po Lin  2
Affiliations

Subjective Cognitive Decline in the Community Is Affected at Multiple Aspects of Mental Health and Life Quality: A Cross-Sectional Study of the Community Medicine of Keelung Chang Gung Memorial Hospital

Yi-Chia Wei et al. Dement Geriatr Cogn Dis Extra. .

Abstract

Background: Subjective cognitive decline (SCD) is one of the early warning signs of objective cognition impairment and dementia.

Methods: This cross-sectional study screened SCD and studied multiple domains of mental health, lifestyle, and life quality of the community-dwelling people in the northern coastal region of Taiwan.

Results: Among 426 valid AD8 questionnaires, a cutoff of score 2 divided subjects into 115 with SCD (SCD+) and 311 without SCD (SCD-). Analysis of age, sex, body compositions, and blood tests revealed an older age (60.7 ± 10.9 years) of the SCD+ group than the SCD- group (57.6 ± 12.0 years, p < 0.05). Further exclusion of subjects younger than 50 years eliminated age differences and left 100 with SCD (SCD+_50) and 229 without (SCD-_50). Multidomain comparisons of the SCD+_50 group over the SCD-_50 group were made: the Taiwanese Depression Questionnaire found a higher likelihood of depression; the Pittsburgh Sleep Quality Index revealed suboptimal sleep quality; the SF-36 showed inferior function of all 8 aspects of quality of life; the Health-Promoting Lifestyle Profile documented a less health-seeking lifestyle of nutrition, self-actualization, and stress management.

Conclusions: Aging increased the SCD risk. People with SCD had suboptimal performance in mental health and life quality in addition to subjective cognition problems.

Keywords: Aging; Cognitive impairment; Depression; Quality of life; Subjective cognitive decline.

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Figures

Fig. 1.
Fig. 1.
Flow chart of the study design. SCD, subjective cognitive decline; TDQ, Taiwanese Depression Questionnaire; PSQI, Pittsburgh Sleep Quality Index; SF-36, the Short-Form (36-item) Health Survey; HPLP-S, short form of the Chinese Health-Promoting Lifestyle Profile.
Fig. 2.
Fig. 2.
Frequencies of AD8 scores.
Fig. 3.
Fig. 3.
Age distribution between SCD+ and SCD– groups. The age distributions are both near normal distribution in SCD– (upper row) and SCD+ (lower row). The curves of normal distributions are shown in each figure.
Fig. 4.
Fig. 4.
Multiple-domain involvements of SCD. Increased age increased the likelihood of SCD. Meanwhile, people with SCD tend to have a less satisfactory sleep quality, less optimal quality of life, higher tendency of depression, and less positive health-promoting lifestyle than people without SCD.
See this image and copyright information in PMC

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