Third, we obtained data from the Bureau of Justice Statistics national prisoner statistics program for year end state prison population estimates by sex and age group (denominator data).
Where mortality rates per 100,000 population were calculated for a specific age and sex group, denominator data were restricted to population estimates for that specific age and sex group.
Similarly, we calculated the overall incidence rate by dividing the total number of Cronobacter cases by the sum of the age-group denominators and multiplying by 100,000.
In 2005, a similar number of HbA1c tests were performed for individuals with diabetes (483,746) and without diabetes (496,616) despite large differences in the two groups' denominators.
We then calculated age-specific incidence rates by dividing the number of Cronobacter cases for each age group by the overall age-group denominator and multiplying by 100,000.
We applied this proportion to US census data for that age group, year, and FoodNet site and summed values from all laboratories to obtain an age-group denominator for 2003 2009.
For 65+ and meets any criteria risk groups, denominator is all individuals registered with a GP aged over 16. #Estimate may not reliable as sample size <30 or 95% CI half width >10.
Data analysis was by 'intention-to-treat'. Study results are reported as a summary of the outcome in each group (with denominators being the number of women randomised), or the mean and standard deviation of measurements.
These 5-year (incidence) and 3-year (mortality) pericensal periods were chosen because the appropriate census block group-level denominators needed for neighborhood SES rate calculations were available for the 2000 census.
This expression is adjusted for exposure from the outside community (the second term in the numerator) and from the children in the group (the denominator; cf. Erästö et al., Stat Medicine, 2012), where N v s is the number of carriers of serotype s at visit v and n c g is the number of children in the group.
