A(H1N1)pdm09 Associated Mortality Rates per 100,000 Population, Canada, May – Dec 2009.

Notes:
1The number of influenza-attributed respiratory deaths was calculated from the regression model for deaths certified as due to an underlying respiratory cause.
2The estimated number deaths that were attributable to A(H1N1)pdm2009 based on the all-cause model was not statistically significant. However, the estimate based on the respiratory model was statistically significant. Hence, the lower 95% CI for the number of deaths attributed to influenza was set to the lower 95% CI for respiratory deaths attributed to H1N1/p2009, a figure that is close to the number of deaths certified through ICD-10 coding as due to laboratory-confirmed influenza as the underlying cause of death (rates of 1.0 vs 0.92).