Table 2. Characteristics of livestock operations and worker exposures, North Carolina, 2011.
ILO | AFLO | Chi-square | ||||
N = 80 | % | N = 92 | % | value (df) | ||
Direct contact with livestock | 77 | 96.3 | 92 | 100.0 | 3.51 (1) | |
Direct contact with pigs a | 59 | 73.8 | 62 | 67.4 | 1.76 (1) | |
Direct contact with poultry a | 19 | 23.8 | 65 | 70.7 | 35.44 (1) | |
Direct contact with other animals | 2 | 2.5 | 73 | 79.3 | 100.03 (1) | |
Number of pigs in direct contact with/day b | 108.16 (4) | |||||
None | 21 | 26.3 | 30 | 32.6 | ||
1–249 | 1 | 1.3 | 53 | 57.6 | ||
250–499 | 1 | 1.3 | 5 | 5.4 | ||
500–999 | 3 | 3.8 | 4 | 4.3 | ||
≥1000 | 54 | 67.5 | 0 | 0 | ||
Number of poultry in direct contact with/day c | 76.21 (4) | |||||
None | 61 | 76.3 | 27 | 29.3 | ||
1–249 | 0 | 0 | 52 | 56.5 | ||
250–499 | 0 | 0 | 5 | 5.4 | ||
500–999 | 0 | 0 | 1 | 1.1 | ||
≥1000 | 19 | 23.8 | 7 | 7.6 | ||
Hours/week worked in direct contact with livestock | 132.02 (3) | |||||
None | 3 | 3.8 | 0 | 0 | ||
1–20 hours | 5 | 6.3 | 81 | 88.0 | ||
21–40 hours | 10 | 12.5 | 11 | 12.0 | ||
>40 hoursd | 62 | 77.5 | 0 | 0 |
ILO = industrial livestock operation.
AFLO = antibiotic-free livestock operation.
Categories are not exclusive.
Restricted to workers reporting direct contact with pigs.
Restricted to workers reporting direct contact with poultry.
The maximum number of hours/week worked in direct contact with livestock was 73.5 and 35 hours for ILO and AFLO workers, respectively.