"Figure 4b: Excess winter mortality index in Wales decreased in 2018 to 2019 for both sexes compared to last winter","" "Excess winter mortality index (based on death occurrences) by age group and sex, between 2017 to 2018 and 2018 to 2019","" "","" "Notes","1. Figures are based on deaths occurring in each period (August through to the following July). Numbers of deaths from January to July 2019 are provisional and have been adjusted to take account of late registrations. 2. The excess winter mortality (EWM) index is calculated as excess winter deaths (EWD) divided by the average non-winter deaths, expressed as a percentage. 3. Provisional excess winter deaths (EWD) figures for the latest winter are rounded to the nearest 100. Where there are instances when EWD are below 100, an excess winter mortality (EWM) index is not presented. This is the case for females aged 75 to 79 years in 2018 to 2019. 4. Figures for Wales exclude deaths of non-residents." "Unit","Excess winter mortality index" "","" "Age","2017 to 2018 males","2017 to 2018 females","2018 to 2019 males","2018 to 2019 females" "0 to 74 years","18.7","19.5","10.8","10.5" "75 to 79 years","40.1","30.2","21.1","" "80 to 84 years","27.2","39.7","5.9","14.8" "85 to 89 years","34.2","38.7","9.5","13.6" "90 years and over","41.5","52.3","16.5","22.1"