MRSA nasal carriage prevalence and unadjusted ORs for risk factors among slaughterhouse workers
| Characteristics | Total (%) | MRSA positive (%) | OR (95% CI)* | p Value |
| All | 341/341 (100.0) | 11/341 (3.2) | n.c. | n.c. |
| Gender (male) | 304/341 (89.1) | 11/304 (3.6) | n.c. | n.c. |
| Current smoking | 146/341 (42.8) | 4/146 (2.7) | 0.3 (0.1 to 1.6) | 0.16 |
| Antimicrobial use | 34/341 (10.0) | 2/34 (5.9) | 2.3 (0.5 to 11.2) | 0.32 |
| Lairage area | 36/341 (10.6) | 4/36 (11.1) | 6.1 (1.6 to 22.8) | <0.01 |
| Scalding and dehairing area | 34/341 (10.0) | 3/34 (8.8)† | 4.1 (1.0 to 16.7) | 0.05 |
| Sticking | 26/341 (7.6) | 0/26 (0.0) | n.c. | n.c. |
| Combined | 47/341 (13.8) | 3/47 (6.4) | 2.8 (0.7 to 11.3) | 0.15 |
| Evisceration area | 94/341 (27.6) | 4/94 (4.3)† | 1.1 (0.3 to 4.4) | 0.89 |
| Intestine cleaning | 22/341 (6.5) | 0/22 (0.0) | n.c. | n.c. |
| Combined | 106/341 (31.1) | 4/106 (3.8) | 0.9 (0.2 to 3.7) | 0.92 |
| Cutting area | 109/341 (32.0) | 0/109 (0.0) | n.c. | n.c. |
| Processing area | 25/341 (7.3) | 0/25 (0.0) | n.c. | n.c. |
| Packing area | 25/341 (7.3) | 0/25 (0.0) | n.c. | n.c. |
| Shipping area | 19/341 (5.6) | 0/19 (0.0) | n.c. | n.c. |
| Combined | 146/341 (42.8) | 0/146 (0.0) | n.c. | n.c. |
| Technical service | 15/341 (4.4) | 1/15 (6.7) | 2.7 (0.3 to 22.9) | 0.38 |
| Other | 46/341 (13.5) | 0/46 (0.0) | n.c. | n.c. |
| Contact with livestock‡ | 20/341 (5.9) | 2/20 (10.0) | 4.3 (<0.001 to >999.9) | 0.33 |
| Pigs | 10/341 (2.9) | 1/10 (10.0) | 3.7 (0.4 to 33.4) | 0.24 |
| Cattle | 7/341 (2.1) | 1/7 (14.3) | 5.9 (0.6 to 55.5) | 0.12 |
↵* For univariate calculation of ORs, CIs and p values, 339 observations were used, of which 10 were MRSA positive. Some participants indicated that they worked at more than one section.
↵† MRSA-positive participant working in both scalding and dehairing and evisceration areas (n=1).
↵‡ Contact with livestock outside of slaughterhouse.
n.c., not computable.