Influenza and Pneumonia Mortality Trends 2000-2007 DS 10-10000
County of Residence Populations
Thirty-two of the 58 California counties had reliable influenza and pneumonia age-adjusted death rates for each study year. Thirty-one counties had age-adjusted rates that were lower in 2007 than 2000, and one county demonstrated a higher rate. San Diego County demonstrated the greatest drop in rates from 30.6 in 2000 to 9.8 in 2007, which represented a 68.0 percent decrease. Sutter County was the only county that showed a slight increase, from an age adjusted rate of 26.0 in 2000 to 26.6 in 2007.
Out of 32 counties, 20 counties showed a statistically significant downward trend from 2000 to 2007.
The remaining 12 counties did not show significant change from 2000 to 2007.
Trend analyses were not performed in counties where rates for one or more years examined were unreliable. The counties listed below were not included in trend analysis due to unreliable rates.
Alpine County did not have any influenza and pneumonia deaths within the study period.
In a closer look at 2007, 34 counties had reliable age-adjusted death rates. Yolo County had the highest rate of 29.2, which was three times higher than the lowest rate of 9.8 in San Diego County. Alpine, Mono, and Sierra counties had no deaths from influenza and pneumonia in 2007.
Detailed yearly counts are displayed in Table 4 (PDF). Age-adjusted rates by county of residence are shown in Table 5 (PDF) with corresponding 95% confidence intervals displayed in Table 6 (PDF).