NHANES 2017-2018 Serum Vitamin Levels and Liver Fat Data

Analytic dataset used in a study investigating associations between serum vitamins A, C, D, and E and liver fat accumulation in lean and non-lean adults. The data originates from the 2017–2018 National Health and Nutrition Examination Survey (NHANES) and was analyzed by Caijuan Hong. The dataset is 182.0 KB in size and was last updated in April 2026.

Use Cases

• Modeling associations between serum vitamin levels and liver fat based on CAP-defined hepatic steatosis.
• Investigating threshold effects and nonlinear relationships, such as the described effect of vitamin C in lean adults.
• Analyzing how associations between vitamins and liver fat vary by demographic factors like diabetes status.
• Comparing vitamin-liver fat relationships between lean and non-lean population subgroups.

Strengths

• Data is sourced from the authoritative, nationally representative NHANES survey.
• Analysis includes specific beta coefficients and confidence intervals for associations (e.g., vitamin C β = -0.16).
• Dataset is licensed under CC-BY-4.0, facilitating open reuse.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal and geographic bias inherent to the 2017-2018 U.S. NHANES survey.

Provenance

Source

National Health and Nutrition Examination Survey (NHANES) 2017-2018 cycle.

Collection Method

Secondary analysis of publicly available survey and examination data.

Time Range

2017-2018

Freshness

Last updated 2026-04-13 17:31:14; freshness should be verified.

Geography

United States