Anthropometrics at birth and risk of a primary central nervous system tumour: A systematic review and meta-analysis

•High birth weight is associated with increased risk of a primary childhood central nervous system tumour.•This effect was evident for astrocytoma and embryonal central nervous system tumour.•The increased risk seems to be independent of gestational age.•The findings are robust in studies of the highest quality.•The role of modifiable determinants of infant macrosomia should be explored.