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Updated: May 15, 2026

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
Published on: January 11, 2020
Engagement in social activities and progression from mild to severe cognitive impairment: the MYHAT study
Tiffany F Hughes1, Jason D Flatt, Bo Fu
1Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA. hughest2@upmc.edu
Background:
It is of considerable public health importance to prevent or delay the progression of mild cognitive impairment (MCI) to more severely impaired cognitive states. This study examines the risk of progression from mild to severe cognitive impairment in relation to engagement in social activities while mildly impaired and the concurrence of subsequent change in engagement with MCI progression.
Methods:
Participants were 816 older adults with cognitively defined MCI (mean age 78.0 (standard deviation or SD = 7.4) years) from the Monongahela-Youghiogheny Healthy Aging Team (MYHAT) Study--a prospective cohort study of MCI in the community. Over three years of follow-up, 78 individuals progressed from MCI to severe cognitive impairment, while 738 did not progress. Risk of progression was estimated using discrete time survival analyses. The main predictors were standardized composite measures of the variety and frequency of engagement in social activities.
Results:
Lower risk of progression from mild to severe cognitive impairment was associated with both a greater level of frequency of engagement in social activities while mildly impaired (OR = 0.72, 95% CI: 0.55-0.93, p = 0.01) and also with a slower rate of decline in the variety of activities over time (OR = 0.01, 95% CI: <0.001-0.38, p = 0.02).
Conclusions:
Greater engagement in social activities may potentially be beneficial for preventing or delaying further cognitive decline among older adults with MCI. Alternatively, lesser engagement in social activities may be a marker of impending cognitive decline in MCI.
Insights
Maintaining social engagement may help delay cognitive decline in older adults with mild cognitive impairment (MCI). Reduced social activity could signal impending cognitive decline in individuals with MCI.
Area of Science:
- Gerontology
- Neuroscience
- Public Health
Background:
- Preventing progression from mild cognitive impairment (MCI) to severe cognitive impairment is a significant public health concern.
- This study investigates the link between social activity engagement and MCI progression in older adults.
Purpose of the Study:
- To examine the risk of MCI progression based on social activity levels.
- To assess if changes in social engagement predict cognitive decline.
Main Methods:
- Prospective cohort study of 816 older adults with MCI (mean age 78.0 years).
- Discrete time survival analyses used to estimate progression risk over three years.
- Social activity variety and frequency were primary predictors.
Main Results:
- Higher frequency of social activities while mildly impaired was associated with lower MCI progression risk (OR = 0.72).
- A slower decline in the variety of social activities over time also correlated with reduced progression risk (OR = 0.01).
Conclusions:
- Increased social engagement may help delay cognitive decline in older adults with MCI.
- Lower social activity engagement might serve as an early indicator of cognitive decline in MCI patients.
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