Maternal Vitamin D and Childhood Growth Trajectories from Birth to 6 Years

Heng Zhang's dataset from the Wuxi Birth Cohort contains data from 1,100 mother–child dyads. It examines nonlinear and sex-specific associations between maternal vitamin D levels in early- and mid-pregnancy and offspring growth trajectories from birth to 6 years of age. The data was last updated on April 24, 2026.

Use Cases

• Analyze nonlinear associations between maternal vitamin D levels and childhood growth based on restricted cubic spline analyses.
• Model sex-specific effects on growth trajectories based on stratified logistic regression results.
• Identify risk factors for childhood overweight based on associations with increasing BMI-for-age Z-score trajectories.
• Validate group-based trajectory modeling (GBTM) methods for longitudinal growth data.

Strengths

• Includes 1,100 mother–child dyads from a prospective cohort.
• Contains longitudinal data on weight-, height-, and BMI-for-age Z-scores from birth to 6 years.
• Analyses include sex-stratified results and nonlinear associations.

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 geographic bias inherent to the Wuxi Birth Cohort in China.

Provenance

Source

Wuxi Birth Cohort

Collection Method

Prospective observational cohort study

Time Range

Data collection likely spans from pregnancy to child age 6 years.

Freshness

Last updated 2026-04-24 04:22:54; freshness should be verified.

Geography

China