Identification of risk factors influencing Clostridium difficile prevalence in middle-size dairy farms

Table 5 Risk factors associated with the prevalence of C. difficile in calves—First (0–21 days) and second (22–56 days) age group

Age group	Calves 0–21 days					Calves 2–56 days
Risk factors	Odds ratio	CI, low	CI, up	P value	P.bh	Odds ratio	CI, low	CI, up	P value	P.bh
Intestinal parasites cows	0.61	0.27	1.37	0.237	0.612	1.18	0.50	2.82	0.694	0.879
Intestinal parasites calves	0.71	0.36	1.38	0.322	0.612	1.71	0.83	3.52	0.143	0.543
Dietary change	13.27	2.26	77.93	0.004	0.039	1.19	0.31	4.52	0.793	0.941
Heat index	1.00	0.96	1.04	0.866	0.951	1.00	0.96	1.05	0.668	0.879
Breed	5.27	1.88	14.76	0.002	0.029	2.77	0.87	8.83	0.083	0.395
Antibiotic treatment: cows	1.94	0.54	1.02	0.929	0.951	6.62	1.45	3.10	0.003	0.032
Other treatment: cows	1.56	0.79	3.06	0.197	0.612	2.60	1.21	5.59	0.014	0.088
GI diseases: cows	2.69	0.34	0.96	0.951	0.951	1.38	0.39	4.82	0.608	0.879
Mastitis	1.09	0.51	2.29	0.819	0.951	3.48	1.52	7.94	0.003	0.032
Other diseases: cow	7.57	0.38	1.70	0.486	0.768	1.16	0.20	6.69	0.865	0.966
Antibiotic treatment: calves	1.03	0.41	2.54	0.943	0.951	1.94	0.72	5.20	0.188	0.556
Other treatment: calves	1.14	0.50	2.57	0.745	0.951	3.98	0.59	1.54	0.371	0.767
GI diseases: calves	1.76	0.38	8.08	0.463	0.768	0.00	0.00	∞	0.988	0.994
Other diseases: calves	0.54	0.16	1.76	0.311	0.612	1.00	0.31	3.22	0.994	0.994
Meteorological season—winter vs				0.089	0.423				0.383	0.767
Spring	2.02	0.84	4.84	0.114	0.431	0.71	0.27	1.87	0.498	0.859
Autumn	1.66	0.63	4.36	0.300	0.612	0.61	0.20	1.90	0.404	0.767
Summer	3.35	1.22	9.18	0.018	0.116	1.27	0.40	4.02	0.682	0.879

CI: 95% confidential intervals, P.bh: P values adjusted with Benjamimi and Hochberg method.

ISSN: 1297-9716