Comparing age adjusted mortality rates

[Abdul Mannan]

Hello everyone.

I am trying to compare age-adjusted mortality rate for two population. Rural age adjusted mortality rate is 50 per 10,00,000 (95% CI 49-51) and Urban age adjusted mortality rate is 40 per 10,00,000(95% CI 39-41).As their CIs are not overlapping, the difference should be statistically significant. But is there anyway, I can obtain p value in STATA. Can I obtain rate ratio or risk ratio or any other test of difference, like test of proportions? I have absolute counts of death and population. I have tried -csi-, but that gives the comparison of crude rates only using the absolute numbers.

Thank you in advance.

[William Lisowski]

Your question really isn't clear without more detail, or at a minimum it is too difficult to guess at a good answer from what you have shared. Please help us help you.

Can you tell us how you obtained the age-adjusted mortality rates and their confidence intervals from your counts of death and population? What is the data like, what commands did you run, what is the output of those commands.

The Statalist FAQ provides advice on effectively posing your questions, posting data, and sharing Stata output.

[Abdul Mannan]

Thank you for your response.

Age-adjusted mortality rates have been obtained by standardizing the crude mortality rates to 2000 US population. Crude rates were calculating by dividing the number of deaths by total population. These rates are already available at CDC website. So these calculations were already done. Following is the data already obtained from CDC website.

Rural Deaths Rural Population Rural Age Adjusted Rate Rural Age Adjusted Rate Lower 95% Confidence Interval Rural Age Adjusted Rate Upper 95% Confidence Interval Rural Age Adjusted Rate Standard Error Urban Deaths Urban Population Urban Age Adjusted Rate Urban Age Adjusted Rate Lower 95% Confidence Interval Urban Age Adjusted Rate Upper 95% Confidence Interval Urban Age Adjusted Rate Standard Error 39122 646605764 49.08 48.59 49.57 0.25 141097 3600613712 38.54 38.34 38.75 0.1

I have tried comparing these rates using following command:

prtesti 646605764 0.4908 3600613712 0.3854

which gives significant results, however I am not sure if that is the accurate test for comparison.

Suggested manual calculation is also given in the following official CDC website at page 84.

https://www.cdc.gov/nchs/data/nvsr/n...r70-08-508.pdf

Again, appreciate your help.