Sleep problems in infancy and early school age in very preterm infants

•sleep problems of VPT children are unrelated to gestational age•individual strategies are needed to approach sleeping behavioral problems in preterm children•the exposure to analgesics and sedatives during primary hospital stay is associated with long-term sleep impairment•sleep problems and the exposure to analgesics and sedatives are associated with hyperactivity and inattention•sleep problems of VPT children are associated with neurodevelopmental impairment (decreased IQ and motor function)