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

Table 4 Risk factors associated with the prevalence of C. difficile in cows and third age group of calves (57–180 days)

Age group	Cows					Calves 57–180 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	0.67	0.27	1.67	0.397	0.685	1.11	0.45	2.73	0.805	0.899
Intestinal parasites calves	0.97	0.47	1.98	0.937	0.976	1.12	0.53	2.37	0.760	0.899
Dietary change	5.00	2.06	12.11	0.001	0.007	2.84	1.10	7.35	0.030	0.289
Heat index	0.95	0.91	0.99	0.046	0.323	0.98	0.93	1.02	0.423	0.899
Breed	1.80	0.58	5.57	0.304	0.685	2.82	1.23	6.47	0.014	0.268
Antibiotic treatment: cows	1.72	0.86	3.43	0.118	0.323	1.26	0.59	2.69	0.545	0.899
Other treatment: cows	1.85	0.91	3.74	0.087	0.323	1.16	0.51	2.60	0.715	0.899
GI diseases: cows	1.60	0.54	4.68	0.390	0.685	0.86	0.18	4.18	0.862	0.909
Mastitis	1.30	0.58	2.88	0.513	0.750	1.16	0.48	2.78	0.736	0.899
Other diseases: cow	3.38	0.72	15.73	0.119	0.323	0.00	0.00	∞	1.000	1.000
Antibiotic treatment: calves	0.64	0.19	2.11	0.468	0.741	0.56	0.12	2.64	0.472	0.899
Other treatment: calves	1.18	0.46	3.02	0.723	0.858	1.26	0.44	3.61	0.664	0.899
GI diseases: calves	0.00	0.00	∞	0.976	0.976	1.55	0.16	14.32	0.696	0.899
Other diseases: calves	1.40	0.42	4.66	0.5764	0.782	1.33	0.35	5.06	0.669	0.899
Meteorological season-winter vs				0.060	0.323				0.230	0.899
Spring	1.20	0.48	3.00	0.693	0.858	1.52	0.57	4.01	0.395	0.899
Autumn	0.55	0.14	2.10	0.391	0.685	0.58	0.14	2.36	0.451	0.899
Summer	0.32	0.09	1.14	0.079	0.323	0.64	0.17	2.34	0.503	0.899

ISSN: 1297-9716