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What do systematic reviews say?

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Evidence found and GRADE certainty

888 questions · 936 findings · 109 reviews

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No studies found 196 · 20.9%GRADE not reported 88 · 9.4%Very low 226 · 24.1%Low 217 · 23.2%Moderate 152 · 16.2%High 57 · 6.1%

Antibiotics vs placebo or no intervention

Laboratory‐confirmed leptospirosis · farmworkers, soldiers, and people in endemic areas

It is very uncertain whether summary of findings table ‐ Antibiotics changes laboratory‐confirmed leptospirosis compared with placebo or no intervention (very low certainty).

1 finding from 1 review

Antibiotics vs placebo or no intervention

Clinical diagnosis of infection regardless of laboratory confirmed · farmworkers, soldiers, and people in endemic areas

Summary of findings table ‐ Antibiotics showed no clear difference in clinical diagnosis of infection regardless of laboratory confirmed compared with placebo or no intervention (low certainty).

1 finding from 1 review

Antibiotics vs placebo or no intervention

Clinical diagnosis confirmed by laboratory diagnosis · farmworkers, soldiers, and people in endemic areas

Summary of findings table ‐ Antibiotics showed no clear difference in clinical diagnosis confirmed by laboratory diagnosis compared with placebo or no intervention (low certainty).

1 finding from 1 review

Antibiotics vs placebo or no intervention

Non‐serious adverse events · farmworkers, soldiers, and people in endemic areas

It is very uncertain whether summary of findings table ‐ Antibiotics changes non‐serious adverse events compared with placebo or no intervention (very low certainty).

1 finding from 1 review

Antibiotics vs placebo or no intervention

All‐cause mortality · people with leptospirosis

It is very uncertain whether summary of findings table ‐ Antibiotics changes all‐cause mortality compared with placebo or no intervention (very low certainty).

1 finding from 1 review

Antibiotics vs placebo or no intervention

Adverse events considered non‐serious · people with leptospirosis

It is very uncertain whether summary of findings table ‐ Antibiotics changes adverse events considered non‐serious compared with placebo or no intervention (very low certainty).

1 finding from 1 review

Summary of findings: intranasal steroids plus oral antibiotic vs control plus antibiotic

OME resolution at intermediate‐term · Children with otitis media with effusion

Summary of findings: intranasal steroids plus oral antibiotic showed no clear difference in OME resolution at intermediate‐term compared with control plus antibiotic (moderate certainty).

1 finding from 1 review

Early discontinuation of antibiotic treatment vs treatment until neutropenia resolution

All‐cause mortality · febrile neutropenia

Early discontinuation of antibiotic treatment showed no clear difference in mortality compared with treatment until neutropenia resolution (low certainty).

1 finding from 1 review

Early discontinuation of antibiotic treatment vs treatment until neutropenia resolution

Clinical failure · febrile neutropenia

It is very uncertain whether early discontinuation of antibiotic treatment changes clinical failure compared with treatment until neutropenia resolution (very low certainty).

1 finding from 1 review

Early discontinuation of antibiotic treatment vs treatment until neutropenia resolution

Bacteraemia · febrile neutropenia

It is very uncertain whether early discontinuation of antibiotic treatment changes any bacteraemia compared with treatment until neutropenia resolution (very low certainty).

1 finding from 1 review

Adverse events with anti‐gram‐positive antibiotics vs placebo

Overall mortality · people with cancer who have febrile neutropenia

Mortality with anti‐gram‐positive antibiotics showed no clear difference in overall mortality compared with placebo (moderate certainty).

1 finding from 1 review

Combined HBO and perioperative antibiotics prior to dental implant therapy vs antibiotics alone

Adverse effects (including quality of life) · Adults with head and neck cancer undergoing curative or adjuvant radiotherapy (at risk of osteoradionecrosis of the jaws)
1 finding from 1 review