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<p>Subjective cognitive decline (SCD) is prevalent among older adults and can signal the onset of neurodegenerative diseases and dementia. As the aging population grows, understanding the impact of SCD on quality of life (QoL) becomes a pressing public health concern. This study examines the relationship between SCD and health-related quality of life (HrQoL). Using data from the 2022 Behavioral Risk Factor Surveillance System (BRFSS) survey, we explored the association between SCD and the HrQoL-4 questionnaire components: poor/fair general health, unhealthy physical days over 14, unhealthy mental days over 14, and activity-limited days over 14. We also assessed the association between SCD and the unhealthy days index (UHD), which is a summary of these components. Of the 21,931 participants, 3462 (12.9%) reported SCD. Participants with SCD had significantly higher rates of poor/fair general health (53.48% vs. 27.98%), activity limitations (35.34% vs. 15.77%), mental distress (37.51% vs. 17.85%), and poor physical health (43.18% vs. 25.71%). Multivariable analyses showed that SCD was independently associated with poor/fair general health (aOR: 1.71 [95% CI: 1.38–2.11]), frequent physical distress (aOR: 1.41 [1.17–1.71]), frequent mental distress (aOR: 1.48 [1.22–1.80]), frequent activity limitations (aOR: 1.77 [1.45–2.15]), and unhealthy days index above 14 (aOR: 1.46 [1.19–1.79]). Among participants with SCD, protective factors for HrQoL included alcohol consumption, physical activity, higher education, emotional support, lower social isolation, and some older age groups, whereas history of COPD, CVD, diabetes, and depression were associated with worse HrQoL. SCD is independently and inversely associated with HrQoL, negatively impacting general health, physical health, mental health, and activity-related aspects.</p>

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A cross-sectional comparison of health-related quality of life in people with subjective cognitive decline and the general population

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月29日

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  • Ida Mohammadi,
  • Shahryar Rajai Firouzabadi,
  • Mohammadreza Alinejadfard,
  • Rasoul Ebrahimi,
  • Sana Mohammad Soltani

摘要

Subjective cognitive decline (SCD) is prevalent among older adults and can signal the onset of neurodegenerative diseases and dementia. As the aging population grows, understanding the impact of SCD on quality of life (QoL) becomes a pressing public health concern. This study examines the relationship between SCD and health-related quality of life (HrQoL). Using data from the 2022 Behavioral Risk Factor Surveillance System (BRFSS) survey, we explored the association between SCD and the HrQoL-4 questionnaire components: poor/fair general health, unhealthy physical days over 14, unhealthy mental days over 14, and activity-limited days over 14. We also assessed the association between SCD and the unhealthy days index (UHD), which is a summary of these components. Of the 21,931 participants, 3462 (12.9%) reported SCD. Participants with SCD had significantly higher rates of poor/fair general health (53.48% vs. 27.98%), activity limitations (35.34% vs. 15.77%), mental distress (37.51% vs. 17.85%), and poor physical health (43.18% vs. 25.71%). Multivariable analyses showed that SCD was independently associated with poor/fair general health (aOR: 1.71 [95% CI: 1.38–2.11]), frequent physical distress (aOR: 1.41 [1.17–1.71]), frequent mental distress (aOR: 1.48 [1.22–1.80]), frequent activity limitations (aOR: 1.77 [1.45–2.15]), and unhealthy days index above 14 (aOR: 1.46 [1.19–1.79]). Among participants with SCD, protective factors for HrQoL included alcohol consumption, physical activity, higher education, emotional support, lower social isolation, and some older age groups, whereas history of COPD, CVD, diabetes, and depression were associated with worse HrQoL. SCD is independently and inversely associated with HrQoL, negatively impacting general health, physical health, mental health, and activity-related aspects.