Table A2.
Cochrane Risk of Bias Assessment Among Individual Studies
| Study | Random Sequence Generation | Allocation Concealment | Blinding of Participants | Blinding of Personnel | Blinding of Outcome Assessment | Incomplete Outcome Data | Selective Outcome Reporting | Other Sources of Bias |
|---|---|---|---|---|---|---|---|---|
| Adams, 19951 |
|
|
|
|
|
|
|
|
| Altman, 19982 |
|
|
|
|
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|
|
|
| Dickson, 200116 |
|
|
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|
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|
|
|
| Petrella, 200233 |
|
|
|
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|
|
|
|
| Ishijima, 201424 |
|
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| Buendía-López, 20188 |
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|
low bias risk; uncertain bias risk; high bias risk.