Volume 12, Number 11—November 2006
Research
Clostridium difficile PCR Ribotypes in Calves, Canada
Table 1
Estimated odds ratios for a calf to have a positive toxin A/B ELISA result, southern Ontario, Canada, 2004*
Pairwise comparison | Odds ratio | 95% CI | Adjusted Tukey p values |
---|---|---|---|
May vs August† | 3.62 | 1.8–8.3 | 0.007 |
June vs August† | 3.17 | 1.3–7.7 | 0.029 |
July vs August† | 2.58 | 1.2–5.5 | 0.038 |
May vs July | 1.41 | 0.7–2.8 | 0.59 |
June vs July | 1.23 | 0.6–2.6 | 0.85 |
May vs June | 1.14 | 0.5–2.6 | 0.95 |
*CI, confidence interval. The number of positive toxin A/B ELISA test results and calves sampled per month was May, 23/57; June, 16/41; July, 34/105; and August, 12/75. August data include 2 observations from September.†Statistically significant. |
*CI, confidence interval. The number of positive toxin A/B ELISA test results and calves sampled per month was May, 23/57; June, 16/41; July, 34/105; and August, 12/75. August data include 2 observations from September.†Statistically significant.