Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,304 questions · 1,352 findings · 210 reviews

No studies found 230 · 17%GRADE not reported 163 · 12.1%Very low 269 · 19.9%Low 277 · 20.5%Moderate 291 · 21.5%High 122 · 9%

Tiotropium vs ipratropium

Mortality (all‐cause) · chronic obstructive pulmonary disease (COPD). Participants in included studies had an average baseline FEV1 of around 40% predicted and…

Tiotropium showed no clear difference in mortality (all‐cause) compared with ipratropium (moderate certainty).

1 finding from 1 review

Intervention not reported

At least 50% of maximum pain relief over 4 to 6 h · adults with moderate or severe acute postoperative pain

The intervention leads to higher at least 50% of maximum pain relief over 4 to 6 h (high certainty).

1 finding from 1 review

Intervention not reported

Participants with at least 1 adverse event · adults with moderate or severe acute postoperative pain

The intervention showed no clear difference in participants with at least 1 adverse event (moderate certainty).

1 finding from 1 review

Chlorhexidine spray vs Placebo or no intervention (including routine care)

Outcome not reported · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…

The review found no eligible studies for this question.

1 finding from 1 review

Chlorhexidine toothpaste vs Placebo or no intervention (including routine care)

Outcome not reported · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…

The review found no eligible studies for this question.

1 finding from 1 review

Chlorhexidine gel (0.12%) vs no treatment

Presence of new caries in the primary teeth · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…

It is very uncertain whether chlorhexidine gel (0.12%) changes presence of new caries in the primary teeth compared with no treatment (very low certainty).

1 finding from 1 review

Chlorhexidine varnish vs placebo or no treatment

Pain, quality of life, patient satisfaction or costs · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…

The review found no eligible studies for this question.

1 finding from 1 review

Chlorhexidine chewing gum vs Placebo or no intervention (including routine care)

Outcome not reported · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…

The review found no eligible studies for this question.

1 finding from 1 review

Chlorhexidine varnish (10%) vs placebo or no treatment

Elevated mutans streptococci levels (>=4 with caries screen; high vs low) · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…

It is very uncertain whether chlorhexidine varnish (10%) changes elevated mutans streptococci levels (>=4 with caries screen; high vs… compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Chlorhexidine varnish vs placebo or no treatment

Dental caries: dmfs increment (primary teeth) · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with mixed, permanent or…
1 finding from 1 review

Intervention not reported

At least 50% of maximum pain relief over 4 to 6 hours · adults with moderate or severe acute postoperative pain

The intervention leads to higher at least 50% of maximum pain relief over 4 to 6 hours (high certainty).

1 finding from 1 review

Intervention not reported

Participants with at least 1 adverse event · adults with moderate or severe acute postoperative pain

The intervention showed no clear difference in participants with at least 1 adverse event (moderate certainty).

1 finding from 1 review