"Figure 10: Decline in infant mortality rate for mothers of all ages since 2010","" "Infant mortality rate by age of mother in England and Wales, 2010 and 2018","" "","" "Notes","1. Infant – deaths of those aged under 1 year." "Unit","Rate - infant deaths per 1,000 live births" "","" "","2010","2018" "under 20 years ","5.6","5.3" "20 to 24 years ","4.5","4.4" "25 to 29 years ","4","3.6" "30 to 34 years ","3.8","3.1" "35 to 39 years ","3.9","3.8" "40 years and over","5.8","4.8"