Table 4 Risk of Bias
Study | Random Sequence Generation | Allocation Concealment | Blinding of participants and personnel | Blinding of outcome assessments | Incomplete outcome data | Selective reporting | Other Bias |
|---|---|---|---|---|---|---|---|
Emerit et al. (1988) | U | U | U | U | U | H | U |
Rashid et al. (1991) | L | U | U | U | L | U | U |
Coghlan et al. (1994) | L | L | L | L | L | H | H |
Taggart et al. (1994) | L | U | U | U | L | U | U |
Castelli et al. (1995) | U | U | U | U | L | H | H |
Gimpel et al. (1995) | U | U | U | U | L | U | U |