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Table 3 GRADE evidence profile

From: Efficacy and safety of extracorporeal membrane oxygenation for cardiogenic shock complicating myocardial infarction: a systematic review and meta-analysis

Certainty assessment

Summary of findings

Participants

(studies)

Follow-up

Risk of bias

Inconsistency

Indirectness

Imprecision

Publication bias

Overall certainty of evidence

Study event rates (%)

Relative effect

(95% CI)

Anticipated absolute effects

With Standard of Care

With VA-ECMO

Risk with Standard of Care

Risk difference with VA-ECMO

30-day mortality

611

(4 RCTs)

not serious

not serious

not serious

seriousa

none

Moderate

148/306 (48.4%)

140/305 (45.9%)

RR 0.96

(0.81 to 1.13)

484 per 1,000

19 fewer per 1,000

(from 92 fewer to 63 more)

30-day reinfarct

491

(3 RCTs)

not serious

not serious

not serious

very seriousb

none

Low

5/247 (2.0%)

4/244 (1.6%)

RR 0.95

(0.25 to 3.60)

20 per 1,000

1 fewer per 1,000

(from 15 fewer to 53 more)

Stroke

608

(4 RCTs)

not serious

not serious

not serious

very seriousb

none

Low

11/306 (3.6%)

12/302 (4.0%)

RR 1.16

(0.38 to 3.57)

36 per 1,000

6 more per 1,000

(from 22 fewer to 92 more)

Acute kidney injury/Renal Replacement Therapy

566

(3 RCTs)

not serious

not serious

not serious

very seriousb

none

Low

40/285 (14.0%)

25/281 (8.9%)

RR 0.65

(0.41 to 1.03)

140 per 1,000

49 fewer per 1,000

(from 83 fewer to 4 more)

Bleeding events

608

(4 RCTs)

not serious

not serious

not serious

seriousa

none

Moderate

36/306 (11.8%)

76/302 (25.2%)

RR 2.07

(1.44 to 2.97)

118 per 1,000

126 more per 1,000

(from 52 more to 232 more)

Sepsis

611

(4 RCTs)

not serious

not serious

not serious

very seriousb

none

Low

51/306 (16.7%)

54/305 (17.7%)

RR 1.06

(0.77 to 1.47)

167 per 1,000

10 more per 1,000

(from 38 fewer to 78 more)

Pneumonia

152

(2 RCTs)

not serious

not serious

not serious

extremely seriousb

none

Very low

19/77 (24.7%)

18/75 (24.0%)

RR 0.99

(0.58 to 1.68)

247 per 1,000

2 fewer per 1,000

(from 104 fewer to 168 more)

  1. CI: confidence interval; RR: risk ratio
  2. Explanations
  3. a. Low number of events < 300 event
  4. b. A wide confidence interval that does not exclude the risk of appreciable harm or benefit and a low number of events < 300 events