A recent study has shown that being born early is associated with a higher risk of hospital admission throughout childhood than being born at full term. Existing evidence suggests that the risk of illness associated with preterm birth declines as children grow up but it remains unclear at what age this begins to happen and how these changes vary by the week of gestational age at birth. For the study published in the journal 'The BMJ' a team of UK researchers set out to examine the association between gestational age at birth and hospital admissions to age 10 years and