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Unformatted text preview: group in standard population =the number pregnancies by age group that would occur in each city if age was distributed like the standard population For each city, add the number of pregnancies and divide by total population number in standard population Choose a standard population with known pregnancy rate by age group (City A) Multiply rates from City A (standard population) * number of people in each of City Cs age categories = the expected number of women that would be pregnant by age group in City C if the rates were the same as City A by age category Calculate SMR = Total number of observed pregnancies in City C/Total number of expected in City C Multiply SMR * crude rate in standard population (City A) Result: adjusted rate for both City A and City B to compare (specific to standard population) Result: adjusted rate for City C that you can compare to crude rate of City A...
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- Spring '08