Per oral cholangiopancreatoscopy in pancreatico biliary diseases - Expert consensus statements

Table 4 Summary of diagnostic accuracy parameters reported in relevant references

Ref.	Grading	Article type	Sensitivity	Specificity	Positive predictive value	Negative predictive value
[34]	4	Review	92%	93%	89%	95%
[12]	2+	Prospective	78%	82%	49%	98%
[13]	2+	Prospective	95%	79%	82%	82%
[21]	2++	Prospective	100%	77%	71%	100%
[35]	2+	Prospective	NR	NR	88%	94%
[14]	2+	Prospective	NR	NR	89%	96%
[15]	4	Retrospective	66%	98%	NR	NR
[26]	2+	Retrospective	98%	90%	NR	NR
[32]	2+	Retrospective	57%	100%	NR	NR
[36]	2+	Retrospective	77%	NR	NR	NR
[37]	2++	Prospective	99%	96%	99%	95.8%
[38]	2+	Prospective	NR	NR	100% visual	92% visual
					38% biopsy	100% biopsy

NR: Not reported.