Table 2.
D1, randomisation process; D2, deviations from the intended interventions; D3, missing outcome data; D4, measurement of the outcome; D5, selection of the reported result.
| Outcome | ID | D1 | D2 | D3 | D4 | D5 | Overall |
|---|---|---|---|---|---|---|---|
| First flatus and gas | Sun et al., 2017 | Low | Low | Low | Low | Low | Low |
| Hur et al., 2011 | Low | Low | Low | Low | Low | Low | |
| Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Mahmoodzadeh et al., 2014 | Low | Low | Low | Low | Low | Low | |
| Wang et al., 2019 | Low | Low | Low | Low | Low | Low | |
| First defecation | Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low |
| Sun et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Wang et al., 2019 | Low | Low | Low | Low | Low | Low | |
| Length of hospital stay | Sun et al., 2017 | Low | Low | Low | Low | Low | Low |
| Mahmoodzadeh et al., 2014 | Low | Low | Low | Low | Low | Low | |
| Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Hur et al., 2011 | Low | Low | Low | Low | Low | Low | |
| Wang et al., 2019 | Low | Low | Low | Low | Low | Low | |
| Rehospitalization | Mahmoodzadeh et al., 2014 | Low | Low | Low | Low | Low | Low |
| Hur et al., 2011 | Low | Low | Low | Low | Low | Low | |
| Sun et al., 2017 | Low | Low | Low | Low | Low | Low | |
| Sun et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Anastomotic leakage | Sun et al., 2018 | Low | Low | Low | Low | Low | Low |
| Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Wang et al., 2019 | Low | Low | Low | Low | Low | Low | |
| Mahmoodzadeh et al., 2014 | Low | Low | Low | Low | Low | Low | |
| Pneumonia | Sun et al., 2017 | Low | Low | Low | Low | Low | Low |
| Mahmoodzadeh et al., 2014 | Low | Low | Low | Low | Low | Low | |
| Sun et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Wound infection | Sun et al., 2018 | Low | Low | Low | Low | Low | Low |
| Wang et al., 2019 | Low | Low | Low | Low | Low | Low | |
| Sun et al., 2017 | Low | Low | Low | Low | Low | Low | |
| Hur et al., 2011 | Low | Low | Low | Low | Low | Low | |
| Bleeding | Hur et al., 2011 | Low | Low | Low | Low | Low | Low |
| Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Wang et al., 2019 | Low | Low | Low | Low | Low | Low | |
| Sun et al., 2017 | Low | Low | Low | Low | Low | Low | |
| Ascites | Hur et al., 2011 | Low | Low | Low | Low | Low | Low |
| Sun et al., 2017 | Low | Low | Low | Low | Low | Low | |
| Sun et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Gastrointestinal paresis | Hur et al., 2011 | Low | Low | Low | Low | Low | Low |
| Wang et al., 2019 | Low | Low | Low | Low | Low | Low | |
| Shimizu et al., 2018 | Low | Low | Low | Low | Low | Low | |
| Recurrent laryngeal nerve injury | Sun et al., 2017 | Low | Low | Low | Low | Low | Low |
| Mahmoodzadeh et al., 2014 | Low | Low | Low | Low | Low | Low | |
| Sun et al., 2018 | Low | Low | Low | Low | Low | Low |