RCT quality assessment
| Author | Adequate random allocation | Adequate allocation concealment | Blinding of healthcare professional | Blinding of participants | Blinding of outcome assessor | Unexpected imbalances in drop outs between groups | Imbalances accounted/adjusted for | Intention-to-treat analysis | ITT appropriate and appropriate methods used to account for missing data |
|---|---|---|---|---|---|---|---|---|---|
| Bariatric surgery | |||||||||
| Lemanu et al27 | ✓ | ✓ | X | X | X | X | NA | UC | UC |
| Colorectal/colon surgery | |||||||||
| Garcia-Botello et al24 | UC | X | UC | X | UC | X | NA | UC | ✓ |
| Ionescu et al25 | ✓ | ✓ | X | X | UC | X | NA | UC | UC |
| Lee et al26 | ✓ | ✓ | UC | X | UC | X | NA | UC | UC |
| Ren et al29 | ✓ | ✓ | X | X | ✓ | X | NA | UC | UC |
| Wang et al31 | UC | UC | UC | X | UC | X | NA | ✓ | ✓ |
| Wang et al32 | UC | UC | X | X | ✓ | UC | UC | UC | UC |
| Yang et al33 34 | ✓ | UC | X | X | UC | X | NA | X | X |
| Gastric surgery | |||||||||
| Chen et al22 | UC | UC | X | ✓ | ✓ | X | NA | UC | UC |
| Kim et al23 | UC | UC | X | X | X | X | NA | UC | UC |
| Liu et al28 | UC | X | X | X | X | X | NA | UC | UC |
| Wang et al30 | UC | UC | X | X | UC | X | NA | X | X |
UC, unclear reporting; NA, not applicable.