Cohort profile: UK Millennium Cohort Study (MCS).

Area of Science:

• Social Epidemiology
• Developmental Psychology
• Public Health

Background:

• The UK Millennium Cohort Study (MCS) is a nationally representative longitudinal study.
• It follows children born at the turn of the 21st century, providing rich data on their lives.

Purpose of the Study:

• To track child development, cognitive ability, and educational attainment.
• To analyze health outcomes and social, economic, and demographic factors influencing them.
• To investigate health inequalities across the UK population.

Main Methods:

• Observational, multidisciplinary cohort study design.
• Five data collection sweeps conducted from infancy to age 11 years, with a planned sweep at age 14.
• Linkage of cohort data with administrative records, including health data.

Main Results:

• The MCS has collected extensive data on health, development, education, and family characteristics.
• The study provides a unique dataset for analyzing trends and disparities.
• Linked administrative data enhance the depth of analysis for health outcomes.

Conclusions:

• The MCS is a vital resource for understanding child development and health trajectories.
• It offers significant potential for research into the determinants of health inequalities.
• Freely available data facilitate broad access for bona fide researchers.