| Before matching | After matching | ||||
---|---|---|---|---|---|---|
Variables | Control group (n = 103) | EIN group (n = 21) | p value | Control group (n = 42) | EIN group (n = 21) | p value |
Complication | ||||||
 All | 42 | 4 | 0.600 | 20 | 4 | 0.028 |
 Anastomotic fistula | 11 | 2 | 0.999 | 3 | 2 | > 0.999 |
 Pneumonia | 26 | 1 | 0.043 | 13 | 1 | 0.024 |
 Others | 5 | 1 | 0.999 | 4 | 1 | 0.657 |
Hospital stays (day) | 15 (13–17) | 13 (11–16) | 0.039 | 15 (13–16) | 13 (11–16) | 0.081 |
Adverse reactions | ||||||
 Bloating and diarrhea | 26 | 3 | 0.280 | 14 | 3 | 0.108 |