Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,532 questions · 2,642 findings · 483 reviews · Headline outcomes only

No studies found 534 · 20.2%GRADE not reported 82 · 3.1%Very low 641 · 24.3%Low 807 · 30.5%Moderate 472 · 17.9%High 106 · 4%

Oxygenation vs no oxygenation during the apnoeic period preceding intubation

All‐cause mortality · people requiring tracheal intubation

Oxygenation showed no clear difference in mortality compared with no oxygenation during the apnoeic period preceding intubation (low certainty).

1 finding from 1 review

Laser trabeculoplasty vs medication

Failure to stabilise visual field progression (as defined by study investigators) · people with open‐angle glaucoma

Laser trabeculoplasty showed no clear difference in failure to stabilise visual field progression (as defined by study… compared with medication (moderate certainty).

1 finding from 1 review

Laser trabeculoplasty vs medication

Failure to stabilise optic neuropathy progression (as defined by study investigators) · people with open‐angle glaucoma

It is very uncertain whether laser trabeculoplasty changes failure to stabilise optic neuropathy progression (as defined by… compared with medication (very low certainty).

1 finding from 1 review

Lower blood pressure targets vs standard blood pressure targets

Total serious adverse events · cardiovascular disease with high blood pressure

Lower blood pressure targets showed no clear difference in total serious adverse events compared with standard blood pressure targets (low certainty).

1 finding from 1 review

Lower blood pressure targets vs standard blood pressure targets

Cardiovascular mortality · cardiovascular disease with high blood pressure

Lower blood pressure targets showed no clear difference in cardiovascular mortality compared with standard blood pressure targets (moderate certainty).

1 finding from 1 review

Lower blood pressure targets vs standard blood pressure targets

Withdrawals due to adverse events · cardiovascular disease with high blood pressure

It is very uncertain whether lower blood pressure targets changes participant withdrawals due to adverse effects compared with standard blood pressure targets (very low certainty).

1 finding from 1 review