Table 3. Detection frequency of pathogens causing calf diarrhea from non-diarrheic and diarrheic feces of Korean native calves in Korea and association between a positive detection and calf diarrhea

Pathogens	Positive in overall samples	Positive in non-diarrheic calves	Positive in diarrheic calves	p-value	Odds ratio
Eimeria species	27.4% (149/544)	25.0% (85/340)	31.4% (64/340)	0.113	1.37 (0.93–2.01)1)
Bovine rotavirus group A	8.8% (48/544)	5.0% (17/340)	15.2% (31/204)	< 0.001	3.41 (1.83–6.33)
Bovine Coronavirus	8.5% (46/544)	7.4% (25/340)	10.3% (21/204)	0.266	1.45 (0.79–2.66)
Cryptosporidium parvum	4.4% (24/544)	2.1% (7/340)	8.3% (17/204)	0.001	4.33 (1.76–10.62)
BVDV	0.7% (4/544)	1.2% (4/340)	0% (0/204)	0.302	0.99 (0.98–1.00)
Escherichia coli K99	0.2% (1/544)	0% (0/340)	0.5% (1/204)	0.375	1.005 (1.00–1.02)
Salmonella species	0% (0/544)	0% (0/340)	0% (0/204)	-	-

Number in parentheses is the 95% confidence interval of the estimated odds ratio.