InformMe 2017.
Methods |
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Participants |
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Interventions |
Intervention 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 | Using a computer‐generated random number list |
Allocation concealment (selection bias) | Low risk | Sealed envelopes concealed until study arm was assigned |
Blinding of participants and personnel (performance bias) Blinding of participants | High risk | Could not have been blinded |
Blinding of participants and personnel (performance bias) Blinding of personnel | High risk | Trial was single blinded; research team members assessing outcomes were blinded to assignments to the intervention |
Blinding of outcome assessment (detection bias) Objective outcome | Low risk | No objective outcomes were measured |
Blinding of outcome assessment (detection bias) Subjective outcomes | Unclear risk | Outcomes were subjective and administered by research personnel who could have been made aware of allocation |
Incomplete outcome data (attrition bias) All outcomes | Low risk | 18 people dropped out with no significant differences between them and those who did not drop out but data not shown |
Selective reporting (reporting bias) | Unclear risk | Insufficient information to permit judgement |
Other bias | Unclear risk | Provided with financial incentives, higher drop‐out/refusal in intervention group; met sample size goal |