Table 5 Significant model-based contrasts between the rate of MRSA and year and month
Description | IRR | 95% CI | P-value |
|---|---|---|---|
2009 versus 2007 | 1.45 | 1.09 – 1.94 | 0.011 |
2009 versus 2008 | 1.83 | 1.34 – 2.48 | < 0.001 |
2010 versus 2007 | 2.34 | 1.79 – 3.06 | < 0.001 |
2010 versus 2008 | 2.94 | 2.20 – 3.92 | < 0.001 |
2010 versus 2009 | 1.61 | 1.28 – 2.03 | < 0.001 |
2011 versus 2007 | 1.91 | 1.10 – 3.31 | 0.021 |
2011 versus 2008 | 2.39 | 1.38 – 4.18 | 0.002 |
March versus June | 1.83 | 1.12 – 3.00 | 0.016 |
April versus February | 1.72 | 1.11 – 2.66 | 0.015 |
April versus June | 2.11 | 1.31 – 3.42 | 0.002 |