Table B.3.
Adjusted ORs (aORs) for MRSA-positive compared to non-MRSA SSTI inpatients, MRSA-colonized compared to non-MRSA-colonized SSTI inpatients, and CA-MRSA compared to HA-MRSA for more finely parsed upper categorical residential ZIP code swine exposures.
| Exposure | Outcome
|
|||||
|---|---|---|---|---|---|---|
| All MRSA†
|
MRSA Colonizationˠ
|
CA-MRSAǂ
|
||||
| Cases (n) | aOR (95% CI) | Cases (n) | aOR (95% CI) | Cases (n) | aOR (95% CI) | |
| Density, swine/km2 | ||||||
| 0 | 10,613 | 1.00 | 1595 | 1.00 | 8439 | 1.00 |
| 0.00004–1.48 | 3155 | 1.07 (1.02–1.11) | 529 | 0.98 (0.88–1.08) | 2560 | 1.14 (1.03–1.27) |
| 1.49–7.69 | 3945 | 1.33 (1.27–1.38) | 536 | 1.01 (0.91–1.11) | 3169 | 1.04 (0.94–1.15) |
| 7.70–19.90 | 3956 | 1.39 (1.34–1.45) | 506 | 0.93 (0.84–1.04) | 3135 | 1.00 (0.90–1.10) |
| 19.91–50 | 2649 | 1.41 (1.35–1.48) | 376 | 1.02 (0.91–1.15) | 2093 | 0.98 (0.88–1.10) |
| 50.1–100 | 908 | 1.37 (1.27–1.47) | 155 | 1.22 (1.03–1.43) | 720 | 1.01 (0.84–1.19) |
| 100.1–150 | 266 | 1.32 (1.16–1.51) | 60 | 1.53 (1.18–1.99) | 204 | 0.90 (0.67–1.21) |
| >150 | 77 | 1.31 (1.03–1.67) | 8 | 0.61 (0.32–1.23) | 63 | 1.37 (0.76–2.48) |
aOR, adjusted odds ratio; CA, Community-Acquired; CI, confidence interval; HA, Hospital Acquired; MRSA, Methicillin Resistant Staphylococcus Aureus; SSTI, Skin and Soft Tissue Infection.
Per 100 swine/km2 increase**Per 1 large farm increase
Both Exposure Metrics: Adjusted for age, race, and socioeconomic deprivation index
Density: Adjusted for race, ethnicity, and socioeconomic deprivation index; Farms >1000: Adjusted for race, ethnicity, socioeconomic deprivation index, asthma, and COPD
Density: Adjusted for age, race, ethnicity, socioeconomic deprivation index, COPD, public insurance recipient status and tobacco use; Farms >1000: Adjusted for age, race, ethnicity, socioeconomic deprivation index, COPD, and public insurance recipient status