Szeto 2007.
Methods |
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Participants |
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Interventions | Treatment group
Control group
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Outcomes |
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Notes |
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Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Quote: "randomized by drawing sealed envelopes, which were prepared and then maintained by a third party not involved in the conduction of the study" |
Allocation concealment (selection bias) | Low risk | Quote: "randomized by drawing sealed envelopes, which were prepared and then maintained by a third party not involved in the conduction of the study" |
Blinding of participants and personnel (performance bias) All outcomes | Low risk | "Open‐label", but unlikely to have influenced the objective outcomes measured |
Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | Not reported other than for Subjective global assessment ‐ trained observers were blinded from treatment group allocation and biochemical results of the patients |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Dropout rate: 2/50 (4%) |
Selective reporting (reporting bias) | Low risk | All relevant outcomes reported |
Other bias | Unclear risk | Insufficient information to permit judgement |