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

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

  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