NHATS Joint Trajectories of Physical Function and Cognition for Dementia Risk

Table 2_Joint trajectories of objective physical function and cognition and risk of incident dementia presents results from an 8-year longitudinal cohort study using the National Health and Aging Trends Study (NHATS). The data, authored by Shiyi Wang and shared under CC-BY-4.0, includes analysis of 6,175 older adults representing 35.4 million individuals, identifying four distinct physio-cognitive aging phenotypes and their associated dementia risks.

Use Cases

• Modeling joint trajectories of physical and cognitive decline based on longitudinal survey data.
• Assessing the mediating role of life space constriction on dementia risk.
• Evaluating the moderating effect of sensory impairment on the relationship between physical decline and cognitive outcomes.
• Improving exploratory diagnostic modeling by incorporating physical metrics.

Strengths

• Based on 8 years of longitudinal data from the nationally representative NHATS study.
• Analyzes a cohort of 6,175 older adults, representing 35.4 million individuals.
• Identifies specific high-risk phenotypes, such as 'Dual Rapid Decliners' with a hazard ratio of 4.85 for dementia.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is small (27.4 KB), suggesting it contains summary or analysis results rather than raw survey data.

Provenance

Source

National Health and Aging Trends Study (NHATS)

Collection Method

Parallel-Process Latent Class Growth Analysis (LCGA) and Cross-Lagged Panel Models applied to longitudinal survey data.

Time Range

8-year longitudinal study (specific years not provided).

Freshness

Last updated 2026-05-22 05:36:38; freshness should be verified.

Geography

United States (implied by NHATS).