Excess Winter Mortality

The number of deaths can vary depending on the season and in particular, tend to increase in the winter. This section presents Excess Winter Mortality; the difference between the actual number of winter deaths in the 4 month period December to March and the expected number of deaths.

The expected number of deaths is a 4 month average of the number of non-winter deaths: deaths in the two four month periods which precede winter (August to November) and follow winter (April to July).

Latest Data xls
Infographic pdf

Latest update - 2014/15

Over the last year (August 2014-July 2015P), the total number of deaths registered increased by 8%, winter deaths by 11% and non-winter deaths by 7%.

On average, 218 more deaths occurred each month between December 2014 and March 2015 than occurred in each of the remaining months of the year in question.

  • In 2014/15 there were 870 excess winter deaths in Northern Ireland, the highest since 2009/10
  • Most of the deaths (86%) were of people aged 75 and over
  • Excess winter deaths due to Respiratory Disease (J00-J99) more than doubled from 160 in 2013/14 to 330 in 2014/15

This Chart is a modification based on work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution License.

Useful Links
Public Health Agency: Seasonal Influenza pdf
Excess Winter Mortality in England and Wales pdf
Winter Mortality in Scotland pdf

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