Table 2.
Characteristics of the poultry workers, swine workers, and the general population who participated in the cohort study
| Characteristics | Poultry workers | Swine workers | General population | P value |
|---|---|---|---|---|
| person‐months (%) | person‐months (%) | person‐months (%) | ||
| Gender | ||||
| Male | 6757 (40.44)a | 9231 (54.35)a | 11 801 (47.72)a | <0.001 |
| Female | 9950 (59.56)a | 7752 (45.65)a | 12 927 (52.28)a | |
| Age group | ||||
| ≤39 | 3770 (22.57)a | 3822 (22.52)a | 8166 (32.99) | <0.001 |
| 40‐59 | 9076 (54.33)a | 10 052 (59.22)a | 10 217 (41.28) | |
| ≥60 | 3859 (23.10)a | 3101 (18.26)a | 6369 (25.73) | |
| Presence of at least one chronic disease | ||||
| Yes | 1117 (6.62) | 512 (3.01) | 2886 (11.66) | <0.001 |
| No | 15 761 (93.38) | 16 482 (96.99) | 21 866 (88.34) | |
| Total | 16 806 (100) | 16 994 (100) | 24 752 (100) | |
a
Variables have missing data.