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Table 6 Significant model-based contrasts between the rate of CDI cases and year and season

From: Detection of Clostridium difficile infection clusters, using the temporal scan statistic, in a community hospital in southern Ontario, Canada, 2006–2011

Description IRR 95% CI P-value
2007 versus 2008 3.82 1.60 – 9.12 0.002
2007 versus 2009 3.15 1.39 – 7.08 0.006
2010 versus 2008 3.85 1.61 – 9.21 0.002
2010 versus 2009 3.17 1.42 – 7.08 0.005
Spring versus Winter 2.56 1.22 – 5.38 0.013
  1. CDI = Clostridium difficile infection.
  2. IRR = Incidence rate ratio.
  3. CI = Confidence interval.