Author (year) | Allocation concealment | Blinded assessment | Follow-up | Baseline measure | Reliable primary outcome | Protection against contamination | Summarya |
---|---|---|---|---|---|---|---|
Cleland (2009) | DONE | DONE | DONE | DONE | DONE | NC | Low |
Evans (2010) | DONE | NC | DONE | DONE | NC | DONE | Moderate |
Bussières (2010) | DONE | DONE | ND | DONE | NC | ND | Moderate |
van Dulmen (2014) | DONE | NC | DONE | ND | ND | DONE | Moderate |
Murray (2015) | DONE | DONE | NC | DONE | ND | DONE | Moderate |
Peter (2013) | NC | DONE | DONE | DONE | NC | DONE | Moderate |
Rebbeck (2006) | DONE | NC | NC | DONE | ND | DONE | Moderate |
Peter (2015) | NC | NC | ND | NC | NC | DONE | High |
Stevenson (2006) | NC | NC | NC | NC | NC | DONE | High |
Bekkering (2005) | DONE | NC | NC | DONE | DONE | DONE | High |
Chipchase (2016) | DONE | NC | NC | DONE | NC | NC | High |