Table 2 Risk of bias in randomized and non-randomized trials
Criteria for Randomized control trials | Dan Apter 2016 | David Hubacher 2017 |
|---|---|---|
Random sequence generation (selection bias) | Low risk | Low risk |
Allocation concealment (selection bias) | Low risk | Low risk |
Blinding of participants and personnel (performance bias) | High risk | High risk |
Blinding of outcome assessment (detection bias) | High risk | Low risk |
Incomplete outcome data (attrition bias) | High risk | High risk |
Selective reporting (reporting bias) | Low risk | Low risk |
Other bias | NA | NA |
Over all | High risk | High risk |
Criteria for Non-Randomized control trials | Bahamondes 2015 | Flores 2005 | Oderich 2012 |
|---|---|---|---|
 Bias due to confounding | Moderate risk | NI (No info) | NI (No info) |
 Bias in selection of participants into the study | Moderate risk | NI (No info) | NI (No info) |
 Bias in classification of interventions | Low risk | Low risk | Low risk |
 Bias due to deviations from intended interventions | Low risk | Low risk | Low risk |
 Bias due to missing data | Moderate risk | NI (No info) | Low risk |
 Bias in selection of the reported result | Low risk | Low risk | Low risk |
 Overall | Moderate risk | Serious risk | Serious risk |