Table 2 GRADE evidence profile.

From: Rivaroxaban for thromboprophylaxis after total hip or knee arthroplasty: a meta-analysis with trial sequential analysis of randomized controlled trials

Quality assessment

No of patients

Effect

Quality*

Importance

No of studies

Design

Risk of bias

Inconsistency

Indirectness

Imprecision

Other considerations

Rivaroxaban

Enoxaparin

Relative (95% CI)

Absolute

Symptomatic venous thromboembolism (follow-up 28–75 days)

9

randomised trials

serious1

no serious inconsistency

no serious indirectness

serious2

none

38/8781 (0.4%)

72/7048 (1%)

RR 0.44 (0.29 to 0.67)

6 fewer per 1000 (from 3 fewer to 7 fewer)

ΟΟ LOW

CRITICAL

        

0.9%

 

5 fewer per 1000 (from 3 fewer to 6 fewer)

  

Major bleeding (follow-up 35–75 days)

8

randomised trials

serious1

no serious inconsistency

no serious indirectness

serious3

none

185/8679 (2.1%)

92/6936 (1.3%)

RR 1.37 (1.05 to 1.78)

5 more per 1000 (from 1 more to 10 more)

ΟΟ LOW

CRITICAL

        

1.5%

 

6 more per 1000 (from 1 more to 12 more)

  

All-cause mortality (follow-up 35–75 days)

8

randomised trials

serious1

no serious inconsistency

no serious indirectness

no serious imprecision

none

10/8679 (0.1%)

15/6936 (0.2%)

RR 0.63 (0.27 to 1.44)

1 fewer per 1000 (from 2 fewer to 1 more)

Ο MODERATE

CRITICAL

        

0.1%

 

0 fewer per 1000 (from 1 fewer to 0 more)

  

Symptomatic deep vein thrombosis (follow-up 28–75 days)

9

randomised trials

serious1

no serious inconsistency

no serious indirectness

no serious imprecision

none

19/8781 (0.2%)

53/7048 (0.8%)

RR 0.36 (0.21 to 0.61)

5 fewer per 1000 (from 3 fewer to 6 fewer)

Ο MODERATE

CRITICAL

        

0.6%

 

4 fewer per 1000 (from 2 fewer to 5 fewer)

  

Symptomatic pulmonary embolism (follow-up 28–75 days)

9

randomised trials

serious1

no serious inconsistency

no serious indirectness

no serious imprecision

none

19/8781 (0.2%)

19/7048 (0.3%)

RR 0.79 (0.35 to 1.79)

1 fewer per 1000 (from 2 fewer to 2 more)

Ο MODERATE

CRITICAL

        

0%

 

  

Clinically relevant non-major bleeding (follow-up 35–75 days)

8

randomised trials

serious1

no serious inconsistency

no serious indirectness

serious4

none

251/8679 (2.9%)

156/6936 (2.2%)

RR 1.23 (1 to 1.51)

5 more per 1000 (from 0 more to 11 more)

ΟΟ LOW

IMPORTANT

        

2.3%

 

5 more per 1000 (from 0 more to 12 more)

  

Postoperative wound infection (follow-up 40–75 days)

4

randomised trials

serious5

no serious inconsistency

no serious indirectness

no serious imprecision

none

27/6356 (0.4%)

28/6373 (0.4%)

RR 0.97 (0.57 to 1.66)

0 fewer per 1000 (from 2 fewer to 3 more)

Ο MODERATE

CRITICAL

        

0.4%

 

0 fewer per 1000 (from 2 fewer to 3 more)

  
  1. RR: relative risk.
  2. 1All the trials were judged to be at high risk of bias or unclear risk of bias.
  3. 2RR with 95% CI for one trial was 3.06 (0.17–56.46).
  4. 3RR with 95% CI for one trial was 14.60 (0.89–239.70).
  5. 4RR with 95% CI for one trial was 9.12 (0.55–149.84).
  6. 5All the trials were judged to be at unclear risk of bias.
  7. *GRADE Working Group grades of evidence: high quality = further research is very unlikely to change our confidence in the estimate of effect; moderate quality = further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate; low quality = further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate; very low quality = we are very uncertain about the estimate.