Epidemiology, Mortality and Morbidity

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Victoria Preston        

EPIDEMIOLOGY

ASSIGNMENT 2

VICTORIA PRESTON

WHAT IS EPIDEMIOLOGY?

Many definitions of epidemiology exist. Most are along the line of the following, which is commonly used.

Epidemiology is the study of the distribution and determinants of disease in human populations (Barker and Rose 1984)

Epidemiology is the study of distribution and causes of disease and injuries in human population.

The way this information is collaborated is through Standardised mortality rates (SMR).  

The SMR makes a comparison between Mortality in a designated group and a standard population (normally England and Wales). The SMR involves calculating the number of deaths which we would expect within a certain district i.e.  Middlesbrough, Stockton and Langbaurgh. The observed number of deaths is then divided by the expected number to calculate the SMR.                                                            

A SMR of less than 100 indicated mortality better than the reference population, while a SMR of over 100 indicates a worse mortality.

WHAT IS A MORTALITY RATE?

A mortality rate is the number of deaths that occur in a particular population in a specified period of time ()

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Information about the number and causes of deaths is available for the UK from the 19th century onwards. The registration of a death is compulsory and a doctor is required to certify the death.  Death registration data is collected and analysed and the death statistics are published annually.

        The information recorded on death certificates is:

  • Date and place of death
  • Name of deceased
  • Sae of deceased
  • Place of birth
  • Date of birth
  • Occupation
  • Usual address  (edited by S. Pike and D. Forster 1997)

WHAT IS A MORBIDITY RATE?

Morbidity statistics are concerned with the amount ...

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