Further evaluation and validation of the VETSCAN IMAGYST: in-clinic feline and canine fecal parasite detection system integrated with a deep learning algorithm

Table 2 Algorithm performance analysis: diagnostic sensitivity and specificity comparing the results reported by an expert (reference) versus by the VETSCAN IMAGYST scanner and algorithm for samples prepared with the VETSCAN IMAGYST centrifugal flotation method

	Feline Ancylostoma	Toxocara cati	Cystoisospora	Giardia
True positive	19	32	26	25
False positive	1	0	12	2
True negative	60	46	161	65
False negative	0	2	1	8
Total	80	80	200	100
Sensitivity (95% confidence interval)	100 (87.8–100)	94.1 (82.4–98.8)	96.3 (84.0–99.6)	75.8 (59.4–87.8)^a
Specificity (95% confidence interval)	98.4 (92.6–99.8)	100 (94.7–100)	93.1 (88.6–96.2)	97.0 (90.8–99.4)

^aThirty-six percent (12/33) of Giardia samples contained ≤ 10 cysts per gram (CPG); diagnostic sensitivity of Giardia samples with > 10 CPG increased to 95.2% (95% confidence interval: 79.8-99.5%)

ISSN: 1756-3305