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Table 2 Risk of bias assessment of included studies

From: Levosimendan and mortality after coronary revascularisation: a meta-analysis of randomised controlled trials

Source

Adequate sequence generation

Allocation concealment

Blinding

Incomplete outcome data addressed

Free of selective reporting

Free of other Bias

Concurrent therapies similar

Overall risk of bias

Al-Shawaf et al. [35]

Unclear

Yes (sealed envelopes)

No

Unclear

Yes

Yes

Yes

Moderate

Alvarez et al. [36]

unclear

Unclear

No

Unclear

Yes

Yes

Yes

Moderate

Alvarez et al. [37]

unclear

Unclear

No

Unclear

Yes

Yes

Yes

Moderate

Barisin et al. [38]

Yes (computer generated)

Yes

Yes (patients, doctors, adjudicators)

Unclear

Yes

Yes

Yes

Low

De Hert et al. [39]

Yes (computer generated)

Yes (sealed envelopes)

Yes (adjudicators)

Unclear

Yes

Yes

Yes

Low

De Hert et al. [40]

Yes (computer generated)

Yes (sealed envelopes)

Yes(adjudicators)

Unclear

Yes

Yes

Yes

Low

De Luca et al. [41]

Unclear

Unclear

No

Unclear

Yes

Yes

Yes

Moderate

Eriksson et al. [42]

Yes (permutated bocks)

Yes

Yes (patients, doctors)

Unclear

Yes

Yes

Yes

Low

Fuhrmann et al. [33]

Yes (computer generated)

Yes (computer generated)

Yes (patients doctors)

Unclear

Yes

Yes

Yes

Low

Husedzinovic et al. [43]

Yes (casting lots)

Yes

Yes (patients, adjudicators)

Unclear

Yes

Yes

Yes

Moderate

Jarvela et al. [44]

Yes (computer generated)

Yes (sealed envelopes)

Yes (patients, doctors, adjudicators)

Unclear

Yes

Yes

Yes

Low

Levin et al. [45]

Yes (computer generated)

Unclear

No

Unclear

Yes

Yes

Yes

Moderate

Lilleberg et al. [46]

Unclear

Unclear

Yes (patients, doctors, adjudicators)

Unclear

Yes

Yes

Yes

Moderate

Samimi-Fard et al. [47]

Unclear

Unclear

No

Unclear

Yes

Yes

Yes

Moderate

Sonntag et al. [48]

Unclear

Yes

Yes (patients, doctors, adjudicators)

Unclear

Yes

Yes

Yes

Moderate

Tritapepe et al. [49]

Yes

(computer generated)

Unclear

Yes (Patients, physicians, adjudicators)

Unclear

Yes

Yes

Yes

Low

Tritapepe et al. [1]

Yes (computer generate)

Unclear

Yes (patients, physicians, adjudicators)

Unclear

Yes

Yes

Yes

Low