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. 2018 Jul 3;2018(7):CD012522. doi: 10.1002/14651858.CD012522.pub2

Summary of findings 3. NPWT 75 mmHg compared with standard care in other open traumatic wounds.

NPWT 75 mmHg compared with standard care in other open traumatic wounds
Patient or population: other open traumatic wounds
 Setting: rabies clinic
 Intervention: NPWT 75 mmHg
 Comparison: standard care
Outcomes Anticipated absolute effects* (95% CI) Relative effect
 (95% CI) № of participants
 (studies) Certainty of the evidence
 (GRADE) Comments
Risk with standard care Risk with NPWT 75 mmHg
Complete wound healing Not estimable Not estimable Not estimable Not estimable Not estimable
Wound infection
Follow‐up: unclear
90 per 1000 39 per 1000
 (15 to 99) RR 0.44
 (0.17 to 1.10) 463
 (1 study) ⊕⊝⊝⊝
Very low1
It is uncertain whether there are differences in incidence of infection between the intervention groups.
Adverse events Not estimable Not estimable Not estimable Not estimable Not estimable
Time to closure or coverage surgery Not estimable Not estimable Not estimable Not estimable Not estimable
Pain Not estimable Not estimable Not estimable Not estimable Not estimable
*The risk in the intervention group (and its 95% confidence interval) is based on the median risk in the comparison group and the relative effect of the intervention (and its 95% CI).
 CI: confidence interval; RR: risk ratio
GRADE Working Group grades of evidenceHigh certainty: we are very confident that the true effect lies close to that of the estimate of the effect
 Moderate certainty: we are moderately confident in the effect estimate: the true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
 Low certainty: our confidence in the effect estimate is limited: the true effect may be substantially different from the estimate of the effect
 Very low certainty: we have very little confidence in the effect estimate: the true effect is likely to be substantially different from the estimate of effect

1Downgraded three levels: risk of bias (no blind outcome assessment); very serious imprecision due to small sample size and wide confidence interval.