Crude mortality rate

What are crude mortality rates?

A hospital’s crude mortality rate looks at the number of deaths that occur in a hospital in any given year and then compares that against the amount of people admitted for care in that hospital for the same time period. The crude mortality rate can then be set as the number of deaths for every 100 patients admitted.

What it tells you is how a hospital or Trust’s mortality rate changes over time. In the case of our hospitals, the Trust’s historical crude mortality rate is set out in the charts below.

Total number of patients admitted Total number of deaths % per 100 admitted
2014/15 89,810 1,735 1.93%
2013/14 79,831 1,572 1.97%
2012/13 80,801 1,761 2.18%
2011/12 86,620 1,768 2.04%
2010/11 95,071 1,912 2.00%

This table shows that as the Trust’s inpatient and emergency services have been brought together in new facilities at the Lister since 2012/13, the crude mortality rate has begun to drop – underlining the Trust’s commitment that such changes lead to improved clinical outcomes for patients.

This final table breaks down our crude mortality rates by our major clinical divisions – medicine, surgery and women’s and children’s services.  What this shows is that the relative risk for surgery, despite the best efforts of Hollywood perhaps, is much lower than that for general medicine. While we have seen general reductions in the crude mortality rates for each of these three clinical divisions, the biggest improvement has been achieved by our medical and women’s & children’s teams.

Crude mortality rate (%) by division
Medicine Surgery Women’s & Children’s
2014/15 4.06% 0.83% 0.05%
2013/14 4.29% 0.82% 0.04%
2012/13 5.40% 0.87% 0.08%
2011/12 5.61% 0.73% 0.09%
2010/11 5.70% 0.80% 0.20%

What does all this information tell us?

The numbers of people dying in our hospitals is very low, with the trend reducing as new specialist inpatient and emergency services are brought together at the Lister hospital, where a £150 million investment programme in major new facilities was completed in October 2014.  The crude mortality rates at the Trust’s hospitals are in line with – and perhaps even better than – what would be expected nationally within the health service.