Cochrane · systematic review · CD011402

External drains versus no drains after burr‐hole evacuation for the treatment of chronic subdural haematoma in adults

Peng, D, Zhu, Y · Cochrane Database of Systematic Reviews · 2016 · Cochrane Library

InjuriesAMSTAR 2: not assessed

SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.

Questions

current version

GRADE rated

No studies

Included studies

No studies 0 · 0%Ungraded 0 · 0%Very low 0 · 0%Low 5 · 71.4%Moderate 2 · 28.6%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Drains compared to no drains for burr‐hole evacuation of CSDH in adults

Population: adults with burr‐hole evacuation of CSDH

7 questions

Outcome	Effect	Evidence	Status / GRADE
Overall recurrence Drains vs no drains	RR 0.45 [0.32, 0.61]	9 studies · 968 participants	Moderate Downgraded: risk of bias
Recurrence with 2 burr holes (subgroup) Drains vs no drains	RR 0.46 [0.26, 0.8]	3 studies · 306 participants	Low Downgraded: risk of bias, imprecision
Recurrence with 1 burr hole (subgroup) Drains vs no drains	RR 0.17 [0.05, 0.56]	2 studies · 156 participants	Low Downgraded: risk of bias, imprecision
Recurrence with 1 or 2 burr holes (subgroup) Drains vs no drains	RR 0.52 [0.34, 0.79]	4 studies · 506 participants	Moderate Downgraded: risk of bias
Complications Drains vs no drains	RR 1.15 [0.77, 1.72]	7 studies · 710 participants	Low Downgraded: risk of bias, imprecision
Mortality Drains vs no drains	RR 0.78 [0.45, 1.33]	5 studies · 539 participants	Low Downgraded: risk of bias, imprecision
Poor functional outcome (includes death) Drains vs no drains	RR 0.68 [0.44, 1.05]	5 studies · 490 participants	Low Downgraded: risk of bias, imprecision