Saccadic Reaction Time and Child Development Data from Lusaka

Zambian data from a sub-study of 299 children in Lusaka assesses saccadic reaction time (SRT) as a measure of early childhood development. The dataset includes predictors like household characteristics, nutritional status, and health indicators, and correlates SRT with concurrent development scores. It contains results from a screen-based assessment using a Tobii Pro Fusion tracker conducted when children were approximately 31 months old.

Use Cases

• Analyze the correlation between Saccadic Reaction Time (SRT) and concurrent Height-for-Age Z-score (HAZ) or Head Circumference-for-Age Z-score (HCZ).
• Model SRT predictors such as being the only child under five, baseline Length-for-Age Z-score (LAZ), dietary diversity (≥4 food groups), and recent diarrheal disease.
• Investigate the relationship between SRT and Global Scales of Early Development (GSED) Development-for-Age Z-score (DAZ) to evaluate its use as an ECD metric.

Strengths

• Data from 299 children provides a focused sample for a specific sub-study in Lusaka, Zambia.
• Includes multiple validated early childhood development metrics: GSED DAZ, HAZ, HCZ, and LAZ.
• Associations and predictors are derived from statistical models (univariable and multivariable regression) with reported p-values and confidence intervals.

Limitations

• Small sample size of 299 limits generalizability and statistical power for subgroup analyses.
• Geographic scope is restricted to Lusaka, Zambia, which may not represent all low- and middle-income country contexts.
• Temporal coverage is a single assessment point at ~31 months, lacking longitudinal tracking.

Provenance

Source

Sub-study data from a 2x2 cluster-randomized trial in Lusaka, Zambia.

Collection Method

SRT assessed with a screen-based setup and Tobii Pro Fusion eye tracker; statistical analysis via regression models.

Time Range

Assessment conducted when children were approximately 31 months old.

Freshness

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Geography

Lusaka, Zambia.