| |
Random sequence generation (selection bias)
|
Allocation concealment (selection bias)
|
Blinding participants and personnel for all outcomes (performance bias)
|
Blinding of outcome assessors for all outcomes
|
Incomplete outcome data for all outcomes (attrition bias)
|
Selective outcome reporting (reporting bias)
|
Other sources of bias
|
|---|
|
Callahan et al., 2006 [18]
|
+
|
+
|
?
|
+
|
+
|
+
|
+
|
|
Thyrian et al., 2017 [19]
|
+
|
-
|
-
|
-
|
-
|
+
|
+
|
|
Van den Dungen et al., 2016 [15]
|
+
|
-
|
-
|
?
|
-
|
+
|
+
|
- - High risk of bias, + Low risk of bias, ? Unclear risk of bias
