Multidrug-Resistant and Methicillin-Resistant Staphylococcus aureus (MRSA) in Hog Slaughter and Processing Plant Workers and Their Community in North Carolina (USA)

http://dx.doi.org/10.1289/ehp.1306741



Table 3. Unadjusted and adjusted estimates of the association between exposures and the mean number of anti­microbials classes to which a S. aureus isolate was resistant.
Category n Unadjusted mean ratio (95% CI) p-Value Adjusted mean ratio (95% CI) p-Value
aReference group are those who did not visit a medical facility in last 6 months. bReference group are those who did not take anti­microbials in last 6 months.
Participant group          
Community resident 25 Referent Referent
Household member 18 1.70 (0.70, 4.10) 0.24 1.69 (0.64, 4.46) 0.29
Worker 35 2.46 (1.17, 5.17) 0.17 2.54 (1.16, 5.56) 0.02
Age (years)          
18–25 29 Referent Referent
26–35 17 1.93 (0.97, 3.87) 0.06 1.67 (0.80, 3.46) 0.17
36–45 12 1.13 (0.46, 2.77) 0.79 1.10 (0.43, 2.78) 0.85
46–55 11 1.05 (0.41, 2.72) 0.91 0.78 (0.28, 2.20) 0.64
56–82 8 1.45 (0.56, 3.74) 0.44 1.14 (0.43, 3.08) 0.79
Medical facility visit in last 6 monthsa 39 1.33 (0.75, 2.36) 0.33 1.37 (0.75, 2.48) 0.31
Use of antimicrobials in last 6 monthsb 19 0.85 (0.44, 1.66) 0.64 0.93 (0.47, 1.85) 0.83