Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,256 questions · 2,339 findings · 262 reviews

No studies found 555 · 23.7%GRADE not reported 398 · 17%Very low 572 · 24.5%Low 476 · 20.4%Moderate 240 · 10.3%High 98 · 4.2%

Anti‐D administration in pregnancy vs no treatment

Incidence of Rhesus D alloimmunisation postpartum (at birth of Rh‐positive infant and at · Rh‐negative women without anti‐D antibodies

Anti‐D administration in pregnancy showed no clear difference in incidence of Rhesus D alloimmunisation postpartum (at birth of… compared with no treatment (low certainty).

1 finding from 1 review

Intervention not reported

Adverse effects from chest radiographs · adults and children with clinical signs and symptoms of acute lower respiratory tract infection

The review found no eligible studies for this question.

1 finding from 1 review

Regional anaesthesia vs conventional pain control

Knee Society Score compared to preoperative value · people undergoing total knee replacement
2 findings from 1 review

9.5% adhesion HP strip vs HP strips

Tooth whitening - assessed by the dentist · Adults (>=18 years) undergoing home-based bleaching (including tetracycline- and smoking-stained teeth, any baseline shade)

It is very uncertain whether 9.5% adhesion HP strip changes tooth whitening - assessed by the dentist compared with 10% HP strip (very low certainty).

1 finding from 1 review

Annual chest x‐ray screening vs usual care (no regular screening)

Mortality: lung cancer · Patients with lung cancer

Annual chest x‐ray screening showed no clear difference in lung cancer mortality at 6 years of compared with usual care (no regular screening) (high certainty).

2 findings from 1 review

Annual chest x‐ray screening vs usual care (no regular screening)

Deaths from all causes (excluding deaths from PLCO cancers) · Patients with lung cancer

Annual chest x‐ray screening showed no clear difference in deaths from all causes (excluding deaths from PLCO cancers) compared with usual care (no regular screening) (high certainty).

1 finding from 1 review