Table 3.
Results of overdispersed Poisson log-linear regression evaluating seasonal incidence of methicillin-resistant Staphylococcus aureus, Stenotrophomonas maltophilia, Achromobacter xylosoxidans and Haemophilus influenzae acquisition among young U.S. children with cystic fibrosis, 2003 to 2009
| Respiratory Pathogen | ||||
|---|---|---|---|---|
| MRSA | S. maltophilia | A. xylosoxidans | H. influenzae | |
| IRR (95% CI) |
IRR (95% CI) |
IRR (95% CI) |
IRR (95% CI) |
|
| Winter | 1.0 Referent |
1.0 Referent |
1.0 Referent |
1.0 Referent |
| Spring | 0.79* (0.65, 0.96) |
0.91 (0.76, 1.08) |
0.59* (0.39, 0.89) |
0.92 (0.81, 1.04) |
| Summer | 0.69* (0.57, 0.84) |
1.05 (0.89, 1.25) |
0.69 (0.47, 1.01) |
0.88* (0.78, 0.99) |
| Autumn | 0.89 (0.75, 1.07) |
0.95 (0.80, 1.12) |
0.80 (0.56, 1.15) |
0.78* (0.69, 0.88) |
MRSA, methicillin-resistant Staphylococcus aureus; S. maltophilia, Stenotrophomonas maltophilia; A. xylosoxidans, Achromobacter xylosoxidans; H. influenzae, Haemophilus influenzae; IRR, incidence rate ratio; CI, confidence interval
* P < 0.05