Wheeze n=3838 | No wheeze n=16630 | ||||||
---|---|---|---|---|---|---|---|
Animal production | n | % | n | % | Odds ratio† | 95% CI | p trend |
†Odds ratios adjusted for age, state, smoking (past and current), atopy-asthma status, and asthma*current smoking. | |||||||
Livestock on farm | 0.0042 | ||||||
None | 1219 | 34 | 5139 | 33 | 1.00 | ||
<50 | 540 | 15 | 2153 | 14 | 1.09 | 0.96 to 1.23 | |
50–99 | 287 | 8 | 1259 | 8 | 1.09 | 0.93 to 1.26 | |
100–499 | 692 | 19 | 3168 | 20 | 1.12 | 1.00 to 1.26 | |
500–999 | 415 | 12 | 1925 | 12 | 1.16 | 1.01 to 1.34 | |
⩾1000 | 470 | 13 | 2046 | 13 | 1.19 | 1.04 to 1.36 | |
Poultry on farm | 0.006 | ||||||
None | 3185 | 89 | 14029 | 91 | 1.00 | ||
<50 | 177 | 5 | 742 | 5 | 1.06 | 0.88 to 1.27 | |
50–99 | 48 | 1 | 198 | 1 | 1.06 | 0.75 to 1.48 | |
100–499 | 48 | 1 | 195 | 1 | 1.14 | 0.81 to 1.60 | |
⩾500 | 112 | 3 | 328 | 2 | 1.39 | 1.10 to 1.75 | |
Milk cows | 0.0008 | ||||||
Never or < once/month | 3490 | 93 | 15373 | 94 | 1.00 | ||
Monthly | 45 | 1 | 147 | 1 | 1.25 | 0.87 to 1.80 | |
Weekly | 26 | 1 | 96 | 1 | 1.25 | 0.79 to 1.99 | |
Daily | 183 | 5 | 705 | 4 | 1.33 | 1.11 to 1.58 | |
Veterinary procedures | <0.0001 | ||||||
Never or < once/month | 2239 | 60 | 9866 | 61 | 1.00 | ||
Monthly | 1068 | 29 | 4634 | 28 | 1.18 | 1.08 to 1.29 | |
Weekly | 361 | 10 | 1563 | 10 | 1.16 | 1.01 to 1.33 | |
Daily | 75 | 2 | 230 | 1 | 1.51 | 1.14 to 2.01 | |
Grind feed | 0.148 | ||||||
Never or < once/month | 2265 | 60 | 9424 | 58 | 1.00 | ||
Monthly | 422 | 11 | 1850 | 11 | 1.05 | 0.93 to 1.18 | |
Weekly | 859 | 23 | 4115 | 25 | 1.04 | 0.94 to 1.16 | |
Daily | 216 | 6 | 967 | 6 | 1.14 | 0.96 to 1.35 |