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Risk of bias for included studies
| Cooke 2009 | Donaldson 2009 | GAPS 2004 | Lincoln 1999 | Kwakkel 1999 & 2002 | Partridge 2000 | Rodgers 2000 | |
|---|---|---|---|---|---|---|---|
| Sequence generation | low | low | low | low | low | low | low |
| Allocation concealment | low | low | low | unclear | unclear | low | low |
| Blinding (participants, personnel and assessors) | low | low | low | low | low | low | high |
| Incomplete outcome data | low | low | low | unclear | low | unclear | low |
| Selective outcome reporting | low | low | low | low | low | high | low |
| Other sources of bias | low | low | low | low | low | low | low |
