Table 7 Summary of methodological quality of included studies
From: Adjunct clinical interventions that influence vaginal birth after cesarean rates: systematic review
MMATa criteria | Screening questions | Quantitative/ control group | Quantitative non-randomized | Totalb | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Study | Clear research questions or objectives? | Do collected data address the research questions/objective? | 2.1 Clear description of randomization? | 2.2 Clear description of allocation concealment (or blinding)? | 2.3 Complete outcome data (≥80%)? | 2.4 Low withdrawal/drop-out (< 20%)? | 3.1 Participants/organizations recruitment - minimizes selection bias? | 3.2 Appropriate measurements used for intervention & outcomes? | 3.3 Participants/organizations comparable, or are differences accounted for? | 3.4 Complete outcome data (80% or above) or acceptable follow-up rate? | |
Ayres-De-Campos (2015) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | ✰ | ✰✰✰ (75%) |
Bickell (1996) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | ✰ | ✰ | ✰✰✰✰(100%) |
Bellows (2016) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | ✰ | ✰ | ✰✰✰✰(100%) |
Cleary-Goldman (2005) | ✰ | ✰ | NA | NA | NA | NA | – | ✰ | – | ✰ | ✰✰ (50%) |
Eden (2014) | ✰ | ✰ | ✰ | – | – | ✰ | NA | NA | NA | NA | ✰✰ (50%) |
Feldman (2015) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | ✰ | ✰ | ✰✰✰✰(100%) |
Fraser (RCT) | ✰ | ✰ | ✰ |  | ✰ | ✰ | NA | NA | NA | NA | ✰✰✰ (75%) |
Gardner (2014) | ✰ | ✰ | NA | NA | NA | NA | ✰ | – | – | ✰ | ✰✰ (50%) |
Kosecoff (1987) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | – | ✰✰ (50%) |
Liu (2013) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | ✰ | ✰✰✰ (75%) |
Lomas (1991) | ✰ | ✰ | ✰ | – | ✰ | – | NA | NA | NA | NA | ✰✰ (50%) |
Montgomery (2007) | ✰ | ✰ | ✰ | ✰ | ✰ | ✰ | NA | NA | NA | NA | ✰✰✰✰(100%) |
Myers (1993) | ✰ | ✰ | NA | NA | NA | NA | – | ✰ | – | ✰ | ✰✰ (50%) |
Pinette (2004) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | ✰ | ✰✰✰ (75%) |
Russillo (2008) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | ✰ | ✰✰✰ (75%) |
Sanchez-Ramos (1990) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | ✰ | ✰✰✰ (75%) |
Santerre (1996) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | ✰ | ✰✰✰ (75%) |
Studnicki (1997) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | ✰ | ✰ | ✰✰✰✰(100%) |
White (2016) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | ✰ | ✰ | ✰✰✰✰(100%) |
Wong (2014) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | – | – | ✰✰ (50%) |
Yee (2017) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | ✰ | ✰ | ✰✰✰✰(100%) |
Zhang (2016) | ✰ | ✰ | – | – | ✰ | – | NA | NA | NA | NA | ✰ (25%) |
Zweifler (2016) | ✰ | ✰ | NA | NA | NA | NA | ✰ | ✰ | ✰ | ✰ | ✰✰✰✰(100%) |