"Figure 3: Live Birth Percentages by Grouped Birthweight and Gestation, 2011 Birth Cohort, England and Wales","" "","" "","" "Notes","1. Pre-term is 24 to 36 completed weeks; term is 37 to 41 completed weeks; post-term is 42 weeks and over. 2. Births occurring at less than 24 weeks gestation account for 0.1% of all live births. 3. Known gestational age only." "Unit","% of live births" "","" "","Under 2,500g","2,500g and over" "Pre-term","62.1","2.8" "Term","37.5","92.8" "Post-term","0.4","4.4"