Volume 18, Number 11—November 2012
Research
Livestock Density as Risk Factor for Livestock-associated Methicillin-Resistant Staphylococcus aureus, the Netherlands
Table 4
Variable |
Model 1: individual level
|
Model 2: model 1 + pig density
|
Model 3: model 1 + cow density
|
Model 4: model 1 + veal calf density
|
|||||||
---|---|---|---|---|---|---|---|---|---|---|---|
OR (95% CI) | p value | OR (95% CI) | p value | OR (95% CI) | p value | OR (95% CI) | p value | ||||
Individual level | |||||||||||
Contact with pigs |
8.63 (1.23–60.40) | 0.030 | 6.41 (0.77–53.35) | 0.086 | 6.84 (0.86–54.49) | 0.069 | 9.41 (1.24–71.26) | 0.030 | |||
Contact with cows |
7.37 (0.57–94.68) | 0.125 | 8.39 (0.55–129.18) | 0.127 | 5.10 (0.39–65.87) | 0.212 | 6.18 (0.53–71.83) | 0.146 | |||
Rural |
5.63 (1.02–31.17) | 0.048 | 4.14 (0.64–26.65) | 0.135 | 5.55 (0.89–34.56) | 0.066 | 4.94 (0.802–30.41) | 0.085 | |||
Probable source of MRSA | |||||||||||
Foreign vs. health care |
11.61 (1.04–129.63) | 0.046 | 8.53 (0.72–100.45) | 0.088 | 8.71 (0.74–102.73) | 0.086 | 14.36 (1.06–193.53) | 0.045 | |||
Unknown vs. health care |
9.56 (1.76–51.93) | 0.009 | 11.47 (2.01–65.64) | 0.006 | 14.03 (2.25–87.47) | 0.005 | 13.31 (2.02–87.75) | 0.007 | |||
Other vs. health care |
4.30 (0.55–33.56) | 0.164 | 4.12 (0.54–31.32) | 0.032 | 2.91 (0.36–23.77) | 0.319 | 4.11 (0.51–33.00) | 0.184 | |||
Municipality level | |||||||||||
Log (pig density) |
1.37 (1.01–1.87) | <0.041 | |||||||||
Log (cow density) |
2.28 (1.17–4.45) | 0.016 | |||||||||
Log (veal calf density) |
1.37 (1.08–1.72) | 0.009 | |||||||||
Regression diagnostics | |||||||||||
AIC | 84.76 | 79.98 | 79.14 | 77.90 | |||||||
Hosmer- Lemeshow† |
2.52 | 0.6407 | 5.48 | 0.7050 | 7.52 | <0.4817 | 6.09 | <0.6374 | |||
Likelihood ratio test |
NA | 0.0092 | <0.0058 | <0.0029 |
*MRSA, methicillin-resistant Staphylococcus aureus; LA-MRSA, livestock-associated MRSA; T-MRSA, typeable MRSA; OR, odds ratio; AIC, Akaike information criteria; NA, not applicable.
†Hosmer-Lemeshow, Hosmer-Lemeshow goodness-of-fit test.
Page created: October 15, 2012
Page updated: October 15, 2012
Page reviewed: October 15, 2012
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