550
C. Minns Lowe et al.
Table II. Risk of bias assessment for identified trials
Domains
Effective blinding
Incomplete
outcome data Outcome country Intervention b) providers
c) objective outcomes
integrity reporting Other sources Our evaluation
of bias
of risk of bias
Ali & Khan 2015 (62) Unclear Adequate Partial Adequate IFU, GC,
Unclear Unclear IFU, UFSD,
High
UIV, USS, GC,
Study 1: Unclear FSD, OMC,
High
UIV, USS, GC,
Single session Adequate BLD, GC, IFU, Moderate
OMC, USS
Partial Unclear GC,
Low
Adequate Adequate IFU, OMC,
USS, GC,
High
Unclear Adequate GC, USS,
High
Unclear BLD, COI,
High
IFU, USS, GC,
Unclear Unclear FSD, UIV,
USS, GC,
High
Adequate Adequate IFU, GC,
Low
Adequate Adequate COI, USS, GC, Low
Adequate Unclear COI, GC, IFU, Moderate
USS,
Unclear Adequate IFU, OMC,
USS, GC,
Adequate Unclear GC, IFU, OMC, High
USS,
Unclear Unclear OMC, USS,
GC,
High
Adequate Unclear IFU, GC,
Moderate
Partial: loss to
follow up 21% Unclear IFU, USS, GC, High
b) Unclear c) Unclear
a) Not possible Unclear Unclear OMC, USS,
GC,
Adequate Adequate GC, IFU, USS, High
Unclear Adequate IFU, OMC,
USS, GC,
Unclear
Pakistan
Bae et al. 2014 (64)
Badalamente et al. 2016
(63) USA Studies 1&3
Adequate
Unclear
Adequate
Adequate
c) Unclear
Study 1.a) Unclear
Study 1: Study 1: Unclear Unclear b) ”investigators blinded”
Study 3: Study 3: c) unclear
Unclear Unclear Study 3.a) Not possible
High
Study 3:
Adequate
b) Not possible
Balci et al. 2016 (65)
Partial
Unclear
Adequate
Turkey
Celik & Kaya Mutlu 2016
(28) Turkey Adequate
Do Moon et al. 2015 (66) Unclear
Adequate
Adequate
Unclear
Unclear
Adequate
Unclear
Unclear
Unclear
Adequate
Unclear
Unclear
Unclear
Adequate
Adequate
Adequate
Adequate
Unclear
Adequate
Adequate
Adequate
Partial
Unclear
Unclear
Unclear
Unclear
Unclear
Adequate
Unclear
Unclear
Unclear
Adequate
Unclear
Adequate
c) Unclear
a) Unclear
High
b) Not possible
Adequate
Unclear
Adequate
Unclear
Unclear
Unclear
Germany
c) Adequate
a) Adequate
b) Not possible
Unclear
Adequate
Adequate
Korea
Ohta et al. 2014 (76)
c) Unclear
a) Not possible
b) Not possible
South Korea
Ma et al. 2013 (27)
c) Unclear
a) Unclear
b) Adequate where possible
South Korea
Lorbach et al. 2010 (75)
c) Unclear
a) Adequate
b) Unclear
South Korea
Lee et al. 2015 (74)
c) Adequate
a) Not possible
b) Not possible
South Korea
Lee et al. 2016 (73)
c) Adequate
a) Not possible
b) Partial
Korea
Kwak & Kim 2016 (72)
c) Unclear
a) Not possible
b) Not possible
China
Kim et al. 2015 (47)
c) Adequate
a) Not possible
b) Not possible
USA
Joo et al. 2013 (71)
c) Unclear
Inadequate
a) States blinded but
unclear how this is possible?
b) Not possible
Chile
Ji et al. 2015 (70)
c) Unclear
a) Not possible
b) Not possible
India
Ibrahim et al. 2014 (31)
c) Adequate
a) Not possible
b) Not possible
Egypt
Gutierrez Espinoza et al.
2015 (30)
c) Unclear
a) Not possible
b) Not possible
South Korea
Ghosh et al. 2012 (69)
c) Adequate
a) Not possible
b) Not possible
Elhafez & Elhafez 2016 (68) Unclear
c) Unclear
a) Not possible
b) Not possible
Turkey
a) Not possible
b) Not possible
South Korea
Doner et al. 2013 (67)
Selective
a) participant
Sequence Allocation
generation concealment
Study, year publication,
c) Unclear
a) Not possible
High
b) Not possible
Inadequate Unclear
Japan
Unclear
c) Adequate
a) Unclear
b) Unclear
c) Unclear
www.medicaljournals.se/jrm
High