Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

146 questions · 151 findings · 10 reviews · Headline outcomes only

No studies found 50 · 33.1%GRADE not reported 2 · 1.3%Very low 14 · 9.3%Low 43 · 28.5%Moderate 31 · 20.5%High 11 · 7.3%

Second‐generation endometrial ablation vs first‐generation endometrial ablation

Proportion given local anaesthesia (%) · heavy menstrual bleeding

It is very uncertain whether overall analyses: second‐generation endometrial ablation changes proportion given local anaesthesia (%) compared with first‐generation endometrial ablation (very low certainty).

1 finding from 1 review

Regional anaesthesia vs conventional pain control

Persistent pain 3 to 12 months after breast cancer surgery (We defined persistent postsurgical pain as new pain that did not exist before the operation, measured using differences in scores based on validated pain scales; patient interview between... · women with breast cancer undergoing elective surgery

Regional anaesthesia may leads to lower persistent pain 3 to 12 months after breast cancer surgery (We… compared with conventional pain control (low certainty).

1 finding from 1 review

Thoracic epidural anaesthesia vs conventional pain control

Persistent pain 3 to 18 months after thoracotomy (We defined persistent postsurgical pain as new pain that did not exist before the operation, measured using differences in scores based on validated pain scales; patient interview between 3 to 18 m... · Patients undergoing thoracotomy

Thoracic epidural anaesthesia probably leads to lower persistent pain 3 to 18 months after thoracotomy (We defined… compared with conventional pain control (moderate certainty).

1 finding from 1 review

Local anaesthetic injection vs no treatment/placebo

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · septal surgery

The review found no eligible studies for this question.

3 findings from 1 review

Local anaesthetic application via nasal packing vs no packing/packing with placebo

Additional analgesia required (escape analgesia) · septal surgery

Local anaesthetic application via nasal packing probably leads to lower requirement for additional analgesia compared with no packing/packing with placebo (moderate certainty).

1 finding from 1 review