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Updated: Jun 27, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Methodological issues related to longitudinal epidemiological assessment of developmental trajectories in children
Insights
The National Children's Study (NCS) faced early methodological challenges in its large-scale, long-term research protocol. Solutions discussed offer insights for future longitudinal child development studies.
Area of Science:
- Pediatric Epidemiology
- Developmental Psychology
- Longitudinal Study Design
Background:
- The National Children's Study (NCS) is a large-scale, prospective study tracking 100,000 children from pregnancy to 21 years.
- This supplement details methodological issues encountered during the initial protocol development phases.
- The focus is on challenges and solutions related to assessing developmental trajectories.
Discussion:
- Methodological hurdles in early protocol design for a major longitudinal child study are presented.
- The papers explore challenges in assessing motor, social/emotional, psychiatric, and neurocognitive/behavioral development.
- Solutions and discussions offer practical guidance for researchers.
Key Insights:
- Early-stage methodological challenges are common in ambitious longitudinal research.
- Collaborative problem-solving is crucial for refining research protocols.
- The NCS experience provides a valuable case study for epidemiological research design.
Outlook:
- The presented methodologies can inform the design of future large-scale child development studies.
- Sharing these challenges and solutions aids epidemiologists in planning similar long-term research.
- This work contributes to best practices in developmental trajectory assessment.
Abstract:
This supplement presents some of the methodological issues that arose during the early phases of protocol development for the National Children's Study (NCS), a probability sample of 100,000 children that will be followed prospectively from pregnancy through 21 years of age, and to share some of the challenges and solutions that were discussed. These papers on motor, social/emotional, psychiatric and neurocognitive/behavioural development do not define the protocol of the NCS, but reflect methodology related to the design of research and assessment of developmental trajectories in children that may be useful to other epidemiologists planning similar longitudinal studies.
Related Concept Videos
Longitudinal Studies
Longitudinal Research
Introduction to Epidemiology
Introduction to Developmental Psychology
Assumptions of Survival Analysis
Study Designs in Epidemiology
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and case-control studies.
