an epidemiological study of listeriosis in dairy cattle

July 9 105 0.86
after July 10 72 1.39 0.5 X
number of cuts
type of harvester
1 R 36 292 1.00
2 3 7 3.48
3 0 3 0.00 0.4 X
discs and drums 19 223 1.0 (0.5-2.3) 0.3
mower conditioner 14 117 1.3 (0.6-2.6) 0.6
wilting
wilted 34 335 0.9 (0.3-2.5) 0.9
storage
days 0 R 6 52 1.00
1 0 3 0.00
2 1 7 1.24
3 33 325 0.88 0.8 X
in covered barn 35 365 0.5 (0.2-1.6) 0.3
outside covered 3 5 6.3 (1.1-32.1) 0.03*
outside uncovered 2 7 2.9 (0.0-16.2) 0.4
Straw
Y N OR (95% CL) p Value
fed 44 378 1.0 (0.6-1.6) 0.9
type