Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,191 questions · 2,354 findings · 362 reviews

No studies found 323 · 13.7%GRADE not reported 382 · 16.2%Very low 555 · 23.6%Low 597 · 25.4%Moderate 345 · 14.7%High 152 · 6.5%

Nitrous oxide vs carbon dioxide

Participant‐reported pain intensity VAS (0‐10, lower score = less pain) · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether nitrous oxide changes pain scores (first postoperative day) VAS, lower score indicates… compared with carbon dioxide (very low certainty).

1 finding from 1 review

Binocular iPad treatment vs occlusion therapy

Visual acuity · 5‐ to 8‐year‐old children with amblyopia
2 findings from 1 review

Whole‐facility changes: Home‐like models vs traditional environment

Global behaviour Neuropsychiatric Inventory (NPI), Neuropsychiatric Inventory‐Nursing Home version (NPI‐NH) and Nurses Observations Scale for Geriatric Patients (NOSGER) (lower scores = better) · older adults living in long‐term residential care including, but not limited to, dementia‐specific care settings
1 finding from 1 review