I’m trying to understand the population numbers in the CDC WONDER database when querying information regarding STD morbidity.
If I build the following query:
- Age: 20-24 years
- Disease: All
- Gender: All
- Race/Ethnicity: All
- State: Illinois (17)
- Year: 2011
- Group By: Disease
- Show Totals: True
- Show Zero Values: False
- Show Suppressed: False
- Calculate Rates Per: 100,000
The results return the following:
It's not clear to me what the quoted population sample is. The website documentation cites sources but not how they are used.
Additionally, in the image supplied, I don't understand why the last line was totaled for the population. Shouldn't the total "Rate per 100,000" be 3,422.21 instead of 1,140.74?
(30,080 / 878,964 * 100,000) = 3,422.21