Compared to very low gestational age (
Koller-Smith et al BMC Pediatrics (2017) 17:166 DOI 10.1186/s12887-017-0921-x RESEARCH ARTICLE Open Access Comparing very low birth weight versus very low gestation cohort methods for outcome analysis of high risk preterm infants Louise IM Koller-Smith1, Prakesh S Shah2,3, Xiang Y Ye3, Gunnar Sjörs4, Yueping A Wang1, Sharon S W Chow1, Brian A Darlow5, Shoo K Lee2,3, Stellan Håkanson6, Kei Lui1,7*, on behalf of the Australian and New Zealand Neonatal Network, Canadian Neonatal Network and Swedish Neonatal Quality Register Abstract Background: Compared to very low gestational age (