Table 4.

Sensitivity and negative predictive value of imaging of the anastomosis (CT, contrast radiography or both modalities) depending on timing postoperatively and level of the anastomosis

	N	Sensitivity % (CI)	Negative predictive value % (CI)
Timing of imaging
7<days postop	43	53 (29–75)	92 (72–99)
7≥days postop	48	75 (53–89)	75 (53–89)
Level of anastomoses
distala	65	69 (51–83)	83 (65–94)
proximalb	26	50 (17–83)	83 (58–96)

CI = 95% confidence interval

^aSigmoidresection, low anterior resection and subtotal or total colectomy

^bIleocoecal resection, right hemicolectomy and left hemicolectomy