Table 2 Qualitative analysis postoperative outcomes

Double tract

 Ahn et al. [30]

2/43 (4.65%)

2/43 (4.65%)

–

21/43 (48.9%)

 Kim et al. [31]

2/17 (11.8%)

0/17 (0%)

1/17 (5.9%)

–

Kamitaka et al. [32]

2/10 (20%)

–

0/10 (0%)

–

 Nomura et al. [17]

1/15 (6.7%)

1/15 (3.3%)

0/15 (0%)

2/15 (13.3%)

 Sugiyama et al. [33]

–

0/10 (0%)

1/10 (10%)

–

 Aburatani et al. [47]

2/19 (10.5%)

0

0

–

 Yang et al. [37]

0

–

–

–

 Tanaka et al. [32]

2/10 (20%)

0

0

0

 Hong et al. [39]

0

0

0

–

 Total

11/114 (9.6%)

3/85 (3.5%)

2/52 (3.9%)

23/58 (39.6%)

Jejunal pouch interposition

 Senmaru et al. [24]

–

1/12 (8.3%)

0 (0%)

–

 Kameyama et al. [19]

6/46 (13.0%)

–

9/46 (15.3%)

23/46 (50.0%)

 Isobe et al. [25]

2/12(16.7)

1/12 (8.3%)

1/12 (8.3%)

–

 Nakamura et al [38].

–

1/12 (8.3%)

0

11/12 (91.7%)

 Total

8/58 (13.8%)

3/36 (8.3%)

10/58 (17.2%)

34/58 (58.6%)

Jejunal interposition

 Wright et al. [23]

2/30 (6.7%)

1/30 (3.3%)

3/30 (10%)

8/30 (26.7%)

 Senmaru et al. [24]

–

2/12 (16.7%)

1/12 (8.3%)

–

 Kameyama et al. [19]

3/10 (30.0%)

–

0/10 (0.0%)

3/10 (30.0%)

 Isobe et al. [25]

3/23 (13.0)

0/23 (0%)

3/23 (13.0)

–

 Kazuhiro et al. [26]

0/14 (0%)

9/14 (64.3%)

0/14 (0%)

–

 Adachi et al. [27]

0/16 (0%)

1/16 (6.3%)

0/16 (0%)

–

 Yasuda et al. [29]

1/23 (5%)

3/21 (14.3%)

2/21 (10%)

17/17 (100%)

 Zhao et al. [21]

2/31 (6.5%)

–

0/35 (0%)

–

 Nomura et al. [17]

1/15 (6.7%)

1/15 (3.3%)

0/15 (0%)

4/15 (26.7%)

 Tokunaga et al. [46]

3/45 (7%)

–

–

–

 Nakamura et al. [38]

–

7/22 (31.8%)

1/25 (4%)

7/22 (31.8%)

 Takayama et al. [41]

–

1/32 (3.1%)

–

–

 Ohashi et al. [35]

22/65 (34%)

–

6/65 (9%)

–

 Katai et al. [48]

–

13/128 (10.2%)

1/128 (0.8%)

–

 Masuzawa et al. [40]

5/32 (15.6%)

1/32 (3.1%)

0

–

 Total

42/304 (13.8%)

39/345 (11.3%)

15/369 (4.1%)

39/94 (41.5%)

Esophagogastrostomy

 Isobe et al. [25]

12/66 (18.2%)

2/66 (3.0%)

1/66 (1.5%)

–

 Kazuhiro et al. [26]

4/10 (40%)

2/10 (20%)

2/11 (18.2%)

–

 Kondoh et al. [28]

4/10 (40%)

4/10 (40%)

0/10 (0%)

–

 Yasuda et al. [29]

1/23 (4.3%)

0/25 (0%)

0/25 (0%)

–

 Zhang et al. [22]

9/62 (14.5%)

11/62 (7.1%)

5/62 (8.1%)

–

 Tokunaga et al. [46]

3/38 (8%)

–

–

–

 Nakamura et al. [38]

–

12/55 (21.8%)

0

12/55 (21.8%)

 Masuzawa et al. [40]

9/49 (18.4%)

2/49 (4.1%)

0

 Abutarani et al. [47]

12/22 (54.5%)

6/22 (27.3%)

0

 Total

54/280 (19.3%)

39/299 (13.0%)

8/174 (4.6%)

12/55 (21.8%)

Double flap reconstruction

 Kano et al. [42]

3/51 (5.9%)

4/51 (8%)

0/51 (0%)

2/51 (3.9%)

 Koruda et al. [20]

46/464 (10.6%)

26/464 (5.5%)

7/464 (1.5%)

–

 Omori et al. [43]

0/32 (0%)

0/32 (0%)

0/32 (0%)

–

 Saeki et al. [44]

1/13 (7.7%)

–

1/13 (7.7%)

–

 Total

50/560 (8.9%)

30/547 (5.5%)

8/560 (1.4%)

2/51 (3.9%)