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Standardised mortality ratios


The standardised mortality ratio for a certain town, using England and Wales as the standard, is reported as 70. Which of the following statements, if any, are true?


a) The low standardised mortality ratio could be because the average age of the town’s population is low

b) The death rate in each age band is 70% of that seen in England and Wales

c) The number of deaths in the town is 70% of what would be expected if the age specific death rates for England and Wales are applied to the town population

d) The standardised mortality ratio for the town is 30% lower than the average for England and Wales