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Birth weight and cognitive function in young adult life: historical cohort study
Sorensen, HT., Sabroe, S., Olsen, J., Rothman, K., Gillman, MW., & Fischer, P. (1997). Birth weight and cognitive function in young adult life: historical cohort study. BMJ (Clinical research ed.), 315(7105), 401-403.
Objective: To examine the relation between birth weight and cognitive function in young adult life. Design: Retrospective cohort study based on birth registry data and cognitive function measured during evaluation for military service. Subjects: 4300 Danish conscripts born between 1973 and 1975. Main outcome measures: Mean score in the Boerge Prien test of cognitive function; score is the number of correct answers to 78 questions and correlates with full scale intelligence quotient (IQ). Results: Mean score in the Boerge Prien test increased from 39.9 at a birth weight of less than or equal to 2500 g to 44.6 at a birth weight of 4200 g even after adjustment for gestational age and length at birth, maternal age and parity and other variables. Above a birth weight of 4200 g the test score decreased slightly. Conclusion: Birth weight is associated with cognitive performance in young adult life, Interference with fetal growth may influence adult cognitive performance
