"Figure 1: The unexplained infant mortality rate has flattened in recent years","" "Unexplained infant mortality rate, England and Wales, 2004 to 2018","" "","" "Notes","1. Figures are based on death occurrences. 2. Data for 2018 are provisional. 3. Sudden infant deaths are coded to ICD-10 code R95 and unascertained deaths are coded to ICD-10 code R99. 4. Unexplained infant deaths include both sudden infant deaths and unascertained deaths. " "Unit","Deaths per 1,000 live births (rate)" "","" "","Sudden infant deaths","Unascertained deaths","Unexplained infant deaths " "2004","0.32","0.17","0.50" "2005","0.35","0.16","0.50" "2006","0.27","0.15","0.43" "2007","0.29","0.11","0.40" "2008","0.26","0.14","0.40" "2009","0.26","0.14","0.40" "2010","0.22","0.14","0.36" "2011","0.23","0.11","0.34" "2012","0.22","0.10","0.32" "2013","0.24","0.12","0.36" "2014","0.19","0.13","0.31" "2015","0.17","0.11","0.28" "2016","0.17","0.16","0.32" "2017","0.16","0.12","0.28" "2018","0.17","0.13","0.30"