Routine Drainage of Colorectal Anastomoses: An Evidence-Based Review of the Current Literature

Table 3

Rates of AL in drained and nondrained patients in the studies included.

Study	Number	AL in drained group (%)	AL in nondrained group (%)	Use of protective stoma (%)
Peeters et al. [5]	924	9.6	23.5	56.6
Qu et al. [6]	4580	5.3	9.2	22.5
Kawada et al. [7]	154	10.8	20.8	0
Akiyoshi et al. [8]	336	2.6	6.3	18.5
Rondelli et al. [9]	2277	7.2	7.4	43.5
Tsujinaka et al. [11]	196	10.7	NA	23.5
Urbach et al. [14]	414	8.9	6.4	NA
Petrowsky et al. [15]	1390	4.2	2.4	NA
Karliczek et al. [16]	1140	2	1	NA
Zhang et al. [17]	1803	7.1	5.7	NA
Menahem et al. [18]	660	14.8	16.7	NA
Rolph et al. [19]	908	1.7	1.2	NA
Yeh et al. [20]	978	2.8		10
Denost et al. [21]	469	9.3	8.6	75
Boccola et al. [23]	1576	8.5	5.1	6
Median	—	7.2 (1.7–14.8)	6.4 (1–23.5)	22.5 (0–75)

AL: anastomotic leakage. NA: not available.