Self-management and glycemic control linked to lower MCI risk in rural elderly with type 2 diabetes
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Key Takeaway
Consider associations between self-management, mood, glycemic control, and MCI risk in elderly diabetes patients.
A cohort study followed 232 rural Chinese elderly with type 2 diabetes mellitus from 2019 to 2024. The study examined associations between changes in self-management behaviors (Δ SDSCA), changes in depressive symptoms (Δ CESD-10), glycemic control, and the risk of developing mild cognitive impairment (MCI). The setting was rural health clinics in China.
Improved self-management behaviors significantly predicted better glycemic control (β = 0.233, P < 0.01). At follow-up, 37.07% of participants had MCI. Regression analyses showed improved self-management (β = 0.220, P < 0.001), fewer depressive symptoms (β = -0.145, P < 0.05), and better glycemic control (β = 0.143, P < 0.05) were each associated with lower MCI risk. A mediation analysis found better glycemic control partially mediated the effects of improved self-management on reducing MCI incidence (indirect effect = 0.035, 95% CI [0.006, 0.074]).
Safety and tolerability data were not reported. Key limitations include the observational design, which cannot establish causation, and the specific population of rural Chinese elderly, which may limit generalizability. The study did not report on adverse events, discontinuations, or funding/conflicts. The practice relevance is that these findings highlight potential modifiable factors in diabetes care, but the associations require confirmation in interventional studies.
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View Original Abstract ↓
BackgroundThe elderly with type 2 diabetes mellitus (T2DM) are often affected by mild cognitive impairment (MCI). However, little is known about the potential mechanisms between the psychological and behavioral factors and MCI among rural Chinese elderly with T2DM. This cohort survey explored the effects of changes in self-management behaviors, depressive symptoms, and glycemic control on MCI.MethodsThis study was conducted from 2019 to 2024 in the rural health clinics in China. At baseline and during follow-up in this cohort study, data on changes in self-management behaviors (the Summary of Diabetes Self-Care Activities, Δ SDSCA), depressive symptoms (the 10-item Center for Epidemiologic Studies Depression Scale, Δ CESD-10), cognitive function (the 30-item Mini-Mental State Examination, MMSE), and glycemic control were assessed. MCI was defined as MMSE scores below education-adjusted cutoffs. Hierarchical multiple regression and mediation model analysis were employed to examine the effects of these variables.ResultsAmong 232 participants, 37.07% had MCI at the follow-up stage. Hierarchical multiple regression analysis revealed that improved self-management behaviors (β = 0.233, P < 0.01) significantly predicted better glycemic control. In addition, improved self-management behaviors (increased Δ SDSCA score) (β = 0.220, P < 0.001), less depressive symptoms (decreased Δ CESD-10 score) (β = -0.145, P < 0.05), and better glycemic control (β = 0.143, P < 0.05) were associated with lower risks of MCI. Mediation analysis suggested that better glycemic control partially mediate the effects of improved self-management (increased Δ SDSCA score) on reducing the incidence of MCI (increasing MMSE score) (indirect effect = 0.035, 95% CI [0.006, 0.074]).ConclusionsImproving self-management behaviors may contribute to more favorable cognitive function by controlling glycemic control. Furthermore, alleviating depressive symptoms may reduce the later incidence of MCI.
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