Comparison of the biopsy and cytobrush techniques for diagnosis of subclinical endometritis in mares

Table 2 Sensitivity, specificity, positive and negative predictive values data of cytological and microbiological examinations from cytobrush (CB) and endometrial biopsy (EB)

	Histology positive	Histology negative	Sum	Sensitivity	Specificity	Positive predictive value	Negative predictive value
Microbiology of EB positive	35	12	47	0.63	0.54	0.74	0.40
Microbiology of EB negative	21	14	35
Sum	56	26	82
Microbiology of CB positive	28	7	35	0.50	0.73	0.80	0.40
Microbiology of CB negative	28	19	47
Sum	56	26	82
Cytology of EB positive	41	1	42	0.73	0.96	0.98	0.63
Cytology of EB negative	15	25	40
Sum	56	26	82
Cytology of CB positive	40	4	44	0.71	0.85	0.91	0.58
Cytology of CB negative	16	22	38
Sum	56	26	82

ISSN: 1477-7827