Supplementary Material for Physical Activity and Aortic Calcification in CKD Patients

571 participants with chronic kidney disease from the 2013–2014 NHANES survey were analyzed in this cross-sectional study. The research, shared on figshare, demonstrates an inverse association between physical activity time and abdominal aortic calcification burden. Each 1-hour increase in weekly activity was linked to a 1% lower prevalence of AAC.

Use Cases

• Analyzing associations between physical activity metrics and vascular calcification based on the study's regression results.
• Conducting subgroup analyses to detect interaction effects on disease outcomes as described in the methodology.
• Assessing potential nonlinear relationships between lifestyle factors and clinical markers using restricted cubic spline models.

Strengths

• Study includes 571 participants with chronic kidney disease, providing a substantive sample size.
• Analysis is based on data from the authoritative 2013–2014 National Health and Nutrition Examination Survey (NHANES).
• Results include specific prevalence ratios (e.g., PR = 0.71) with confidence intervals, offering quantitative findings.

Limitations

• The dataset is 276.7 KB, indicating it is a small supplementary document rather than a primary data file.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for direct data analysis.

Provenance

Source

National Health and Nutrition Examination Survey (NHANES)

Collection Method

Cross-sectional study using weighted Poisson regression and subgroup analyses.

Time Range

2013–2014

Freshness

Last updated 2026-05-23 05:55:14; freshness should be verified.

Geography

United States (implied by NHANES)