Diagnostic accuracy of blood sucrose as a screening test for equine gastric ulcer syndrome (EGUS) in adult horses

Table 4 Sensitivity, specificity, positive and negative predictive values of blood sucrose for diagnosis of CSL in horses after administration of 1 g/kg of sucrose via nasogastric intubation

Time of sampling (min)	Cut-off (µmol/l)	Disease present	Disease absent	Sp (%)	Se (%)	NPV (%)	PPV (%)
Time of sampling (min)	Cut-off (µmol/l)	Disease present	Disease absent	95% CI	95% CI	95% CI	95% CI
45	4.61	59	42	50.0	74.6	58.3	67.7
45	4.61	59	42	34–66	62–85	41–75	55–79
90	5.87	59	42	52.4	76.3	61.1	69.2
90	5.87	59	42	36–68	63–86	44–77	57–80

CSL clinically significant lesions, Se sensitivity, Sp specificity, NPV negative predictive value, PPV positive predictive value, 95% CI 95% confidence intervals

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