Effectiveness of narrow-band imaging magnification for invasion depth in early colorectal cancer

Table 4 Assessment of the carcinomatous invasion depth: comparison between microvascular architecture & pit pattern analysis

Microvascular architecture	Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)	Accuracy (%)
Non-dense vessel density and/or negative vessel regularity	38/43	60/69	0.81 (0.67-0.91)	0.92 (0.83-0.97)	87.5
	0.88 (0.75-0.96)	0.87 (0.77-0.94)
Non-dense vessel density and negative vessel regularity	35/43	69/69	1.00 (0.90-1.00)	0.90 (0.81-0.95)	92.9
	0.81 (0.67-0.92)	1.00 (0.95-1.00)
Pit pattern (Invasive pattern)	37/43	68/69	0.97 (0.86-0.99)	0.92 (0.83-0.97)	93.8
	0.86 (0.72-0.95)	0.99 (0.92-0.99)