<p>Multiple logistic regression equation.</p>

A cross-sectional study of 2,907 participants from the China Health and Retirement Longitudinal Study (CHARLS) analyzed by Shuang Deng in 2026. It explores associations between lipid indices, frailty, and Severe Airflow Limitation (SAL) using multivariate logistic regression. The dataset includes results of nonlinear threshold and subgroup analyses.

Use Cases

• Modeling the association between the Atherogenic Index of Plasma (AIP) and Severe Airflow Limitation based on the reported odds ratios.
• Identifying non-linear thresholds for residual cholesterol's effect on SAL based on the piecewise regression results.
• Investigating effect modification by education level on lipid-SAL associations based on the interaction analyses.
• Comparing SAL prevalence between rural and urban residents based on the reported percentages.

Strengths

• Includes data from 2,907 participants, with 556 identified as SAL cases.
• Analysis provides specific odds ratios and confidence intervals, such as an OR of 0.556 for AIP.
• Identifies a concrete threshold for residual cholesterol at 0.329 mmol/L.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

China Health and Retirement Longitudinal Study (CHARLS).

Collection Method

Cross-sectional study using multivariate logistic regression and piecewise regression.

Freshness

Last updated 2026-04-29 17:34:35; freshness should be verified.

Geography

China (middle-aged and elderly populations).