|
Author
|
Domains
|
|---|
| |
Sequence generation
|
Allocation concealment
|
Blinding
|
Incomplete outcome data
|
Selective outcome report
|
Others sources of bias
|
|---|
|
Pettigrew[24]
|
Yes
|
Yes
|
No
|
Yes
|
Yes
|
No*
|
|
Tsang[23]
|
No
|
No
|
No
|
Yes
|
Yes
|
Yes
|
|
Cohn[26]
|
Unclear
|
Unclear
|
No
|
Yes
|
Yes
|
Yes
|
|
Chatwiriya-charoen[[25]
|
No
|
No
|
No
|
Yes
|
Yes
|
Yes
|
|
Lahat[17]
|
No
|
No
|
No
|
Yes
|
Yes
|
Yes
|
|
Duttaroy[7]
|
Unclear
|
Yes
|
No
|
Yes
|
Yes
|
Yes
|
|
Chiang[16]
|
No
|
No
|
No
|
Yes
|
Yes
|
Yes
|
|
Khan[18]
|
Yes
|
Unclear
|
No
|
Yes
|
Yes
|
Yes
|
- Yes = Low risk of bias.
- No = High risk of bias.
- Unclear = Uncertain risk of bias.
- *Unbalanced in gangrenous appendicitis between comparison arms.
