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Volume 18, Number 2—February 2012


Determining Mortality Rates Attributable to Clostridium difficile Infection

Susy S. HotaComments to Author , Camille Achonu, Natasha S. Crowcroft, Bart J. Harvey, Albert Lauwers, and Michael A. Gardam
Author affiliations: University Health Network, Toronto, Ontario, Canada (S.S. Hota, M.A. Gardam); Ontario Agency for Health Protection and Promotion, Toronto (C. Achonu, N.S. Crowcroft); University of Toronto, Toronto (N.S. Crowcroft, B.J. Harvey, M.A. Gardam); Ministry of Community Safety and Correctional Services, Toronto (A. Lauwers)

Main Article

Table 1

Proportion of deaths attributable to CDI, by panel review coding and death certificate classification, Ontario, Canada, April 2007–February 2008*

Reference category Death certificate, no. (%)
Panel review, no.†
CDI as primary cause of death CDI as primary or secondary cause of death CDI as unrelated cause of death Missing information
Directly/strongly attributable to CDI 6 (6) 37 (37) 61 (60) 3 (3) 101
Somewhat/unrelated to CDI 1 (2) 14 (29) 35 (71) 0 49
Insufficient information
1 (100)
Total 7 (5) 51 (34) 97 (64) 3 (2) 151

*CDI, Clostridium difficile infection.
†Categories determined by panel review. Because panel review was considered the reference standard, panel review percentages = 100%.

Main Article