Table 4.

Descriptive results of Hemo-Fec^® (HF) on slaughtered cattle the same day the fecal samples were obtained (Day 0) and two days after fecal sampling (Day 2). Cow was the study unit, but the individual cow may occur in multiple groups, e.g., group “Ia” includes all cattle with subtype Ia lesions along with those with other subtypes, while group “Ia + Ib” includes all cattle with at least Ia and Ib lesions. The diagnostic sensitivity with the corresponding confidence interval (CI) for both days are shown.

Lesion Subtype (LS) or Alteration	N 1	HF Test Results Day 0				HF Test Results Day 2
		HF+ 2	HF− 3	P(HF+|LS) 4	CI 5	HF+ 2	HF− 3	P(HF+|LS) 4	CI 5
No lesions	96	20	76	0.208	[0.127–0.290]	26	70	0.271	[0.182–0.360]
Ia	661	110	551	0.166	[0.138–0.195]	215	446	0.325	[0.290–0.361]
Ib	503	102	401	0.203	[0.172–0.233]	192	311	0.382	[0.339–0.424]
Ic	760	155	605	0.204	[0.173–0.234]	283	477	0.372	[0.338–0.407]
Id	108	23	85	0.213	[0.182–0.244]	47	61	0.435	[0.342–0.529]
Ia + Ib	955	178	777	0.186	[0.157–0.216]	335	620	0.351	[0.321–0.381]
Ia + Ic	1138	213	925	0.187	[0.157–0.217]	399	739	0.351	[0.323–0.378]
Ia + Id	721	124	597	0.172	[0.143–0.201]	243	478	0.337	[0.303–0.372]
Ib + Ic	997	197	800	0.198	[0.167–0.228]	365	632	0.366	[0.336–0.396]
Ib + Id	568	117	451	0.206	[0.175–0.237]	219	349	0.386	[0.346–0.426]
Ic + Id	797	160	637	0.206	[0.175–0.237]	297	500	0.373	[0.339–0.406]
Ia + Ib + Ic	1267	239	1028	0.189	[0.159–0.218]	447	820	0.353	[0.326–0.379]
Ia + Ib + Id	991	186	805	0.188	[0.158–0.217]	351	640	0.354	[0.324–0.384]
Ia + Ic + Id	1553	288	1265	0.187	[0.163–0.211]	523	1030	0.352	[0.323–0.381]
Ib + Ic + Id	1019	200	819	0.196	[0.166–0.227]	371	648	0.364	[0.335–0.394]
Ia + Ib + Ic + Id	1278	241	1037	0.189	[0.159–0.218]	451	827	0.353	[0.327–0.379]
Edema	15	8	7	0.533	[0.281–0.786]	9	6	0.600	[0.352–0.848]
Hyperplasia	855	152	703	0.178	[0.152–0.203]	282	573	0.330	[0.298–0.361]
Nodules	499	105	394	0.210	[0.175–0.246]	198	301	0.397	[0.354–0.440]
Scar	58	12	46	0.207	[0.103–0.311]	22	36	0.379	[0.254–0.504]
SPHF0 6	0.792
SPHF2 7	0.729

¹ N: the number of animals in the category, please note that one cow can have several lesion subtypes present at the same time and therefore one cow can be registered at more than one level; ² HF+: the number of positive HF samples; ³ HF−: the number of negative HF samples; ⁴ P(HF+|LS): Diagnostic sensitivity regarding the category, except for No lesions, where it corresponds to 1 − Sp; ⁵ CI: 95% confidence interval of the diagnostic sensitivity; ⁶ SP_HF0: the specificity of the HF test in regard of abomasal lesions and alterations at day 0; ⁷ SP_HF2: the specificity of the HF test in regard of abomasal lesions and alterations at Day 2.