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Significant model-based contrasts between the rate of CDI cases and year and season
| 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 |
CDI = Clostridium difficile infection.
IRR = Incidence rate ratio.
CI = Confidence interval.
