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Table 3 Risk of bias assessment

From: Aspiration thrombectomy prior to percutaneous coronary intervention in ST-elevation myocardial infarction: a systematic review and meta-analysis

Author, year

Randomization sequence adequately generated?

Allocation adequately concealed?

Blinding of patients and caregivers?

Blinding of data collectors?

Blinding of adjudicators of outcome?

Blinding of data analysts?

Infrequent missing outcome data?a

Free of suggestion of selective outcome reporting?

Free of other problems that could put it at a risk of bias?

ADMIT (28)

Yes

Yes

No

Probably no

Probably yes

Probably no

Yes

Yes

Yes

Bulum 2012 (29)

Probably no

Probably no

No

No

No

No

Yes

Yes

Yes

Chao 2008 (30)

Probably yes

Probably no

No

No

No

No

Yes

Probably yes

Yes

De Luca 2006 (31)

Probably no

Probably no

No

Probably no

Probably no

Probably no

No

Yes

Yes

EXPIRA (32, 33)

Probably yes

Probably no

No

No

Yes

No

Probably yes

Probably yes

Probably yes

EXPORT (34)

Yes

Yes

No

No

Yes

No

Yes

Probably no

Probably yes

IMPACT (35)

Probably no

Probably no

No

Probably no

Probably no

Probably no

No

No

Yes

INFUSE-AMI (36, 37)

Yes

Probably no

No

Probably no

Yes

Probably no

Yes

Yes

No

ITTI (38)

Yes

Probably no

No

Probably no

Probably yes

Probably no

Yes

Yes

Yes

Kaltoft 2006 (39)

Yes

Yes

No

Probably no

Probably no

Probably no

Yes

Yes

Yes

Liistro 2009 (40)

Yes

Probably no

No

No

Probably yes

No

Probably yes

Yes

Yes

REMEDIA (41)

Yes

Probably yes

No

No

No

No

Probably yes

Yes

Probably yes

Shehata 2014 (25)

Yes

Yes

No

Probably no

Yes

Probably no

Yes

Yes

Yes

Sim 2013 (42)

Probably no

Probably no

No

No

No

No

Yes

Probably no

Yes

TAPAS (43, 44)

Yes

Probably yes

No

No

Yes

No

Yes

Yes

Yes

TASTE (26, 27)

Yes

Yes

No

No

No

Probably no

Yes

Yes

Yes

TOTAL (6)

Yes

Yes

No

Probably no

Yes

Probably yes

Yes

Yes

Probably no

TROFI (45, 46)

Yes

Yes

No

No

Yes

Probably no

Yes

Yes

Yes

VAMPIRE (47)

Probably yes

Probably no

No

No

Yes

No

No

Yes

Probably yes

Yin 2011 (48)

No

No

No

No

No

No

No

No

Probably no

  1. aDefined as less than 10 % loss to outcome data or difference between groups less than 5 % and those excluded are not likely to have made a material difference in the effect observed
  2. All answers as: yes (low risk of bias), probably yes, probably no, no (high risk of bias)
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BMC Cardiovascular Disorders

ISSN: 1471-2261

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