Volume 11, Number 6—June 2005
Research
Methicillin-resistant Staphylococcus aureus and Vancomycin-resistant Enterococci in Rural Communities, Western United States
Table 5
Random effects Poisson regression model for HA-MRSA* rate†
Predictors | No. of institutions | Incidence rate ratio | 95% CI | p value |
---|---|---|---|---|
Quintile of CA-MRSA rate‡ | ||||
1st–2nd: 0 | 11 | Reference | ||
3rd: 0.3 to 1.6 | 6 | 11 | 2.8–4.5 | 0.001 |
4th: 1.7 to 3.4 | 6 | 35 | 10–122 | <0.0001 |
5th: 3.5 to 9.4 | 5 | 33 | 9.2–115 | <0.0001 |
Hospital bed size | ||||
13–25 | 10 | Reference | ||
26–50 | 9 | 0.8 | 0.3–2.0 | 0.596 |
51–235 | 9 | 1.3 | 0.6–3.0 | 0.530 |
State | ||||
Idaho | 17 | Reference | ||
Utah | 11 | 2.3 | 1.3–4.2 | 0.005 |
*HA-MRSA, heathcare-associated methicillin resistant Staphylococcus aureus; 95% CI, 95% confidence interval; CA-MRSA, community-associated MRSA.
†No. of HA-MRSA cases/10,000 occupied bed-days.
‡No. of CA-MRSA cases/10,000 person-years, based on county population.