Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,271 questions · 1,326 findings · 329 reviews

No studies found 247 · 18.6%GRADE not reported 237 · 17.9%Very low 379 · 28.6%Low 285 · 21.5%Moderate 141 · 10.6%High 37 · 2.8%

Antibiotics vs placebo

Annual Exacerbation Rates · Adults (aged 40 or over) with COPD presenting with 1 or more exacerbations in the previous year. The 2 larger studies (Albert 2011; Sethi…

Antibiotics probably leads to lower rate of exacerbation per patient/year WMD of compared with placebo (moderate certainty).

1 finding from 1 review

Antibiotics vs placebo

All‐cause mortality WMD of · Adults (aged 40 or over) with COPD presenting with 1 or more exacerbations in the previous year. The 2 larger studies (Albert 2011; Sethi…

Antibiotics showed no clear difference in all‐cause mortality WMD of compared with placebo (moderate certainty).

1 finding from 1 review

Antibiotics vs placebo

Serious adverse events WMD of · Adults (aged 40 or over) with COPD presenting with 1 or more exacerbations in the previous year. The 2 larger studies (Albert 2011; Sethi…

Antibiotics showed no clear difference in serious adverse events WMD of compared with placebo (moderate certainty).

1 finding from 1 review

Fewer vs more courses of chemotherapy (with or without radiotherapy

Secondary malignant neoplasms · Patients with untreated Hodgkin lymphoma (early stages)

Fewer showed no clear difference in secondary malignant neoplasms compared with more courses of chemotherapy (with or without radiotherapy (moderate certainty).

1 finding from 1 review

Fewer vs more courses of chemotherapy (with or without radiotherapy

Death · Patients with untreated Hodgkin lymphoma (early stages)

Fewer showed no clear difference in death compared with more courses of chemotherapy (with or without radiotherapy (high certainty).

1 finding from 1 review

Fewer vs more courses of chemotherapy (with or without radiotherapy

Progression/relapse · Patients with untreated Hodgkin lymphoma (early stages)

Fewer showed no clear difference in progression/relapse compared with more courses of chemotherapy (with or without radiotherapy (high certainty).

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Denture plaque · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

Educational intervention with information and practical components… showed no clear difference in denture plaque compared with (Optimised) usual care (low certainty).

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Caries/root caries · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)
1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Nutritional status · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

Educational intervention with information and practical components… showed no clear difference in nutritional status compared with (Optimised) usual care; GRADE not reported.

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Incidence of respiratory diseases and pneumonia · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

The review found no eligible studies for this question.

1 finding from 1 review

Root-end resection (with or without root-end filling; surgical retreatment) vs Non-surgical re-treatment (orthograde root canal therapy)

Healing rate · People with one or more endodontically treated teeth and a periapical condition requiring retreatment

Root-end resection (with or without root-end filling; surgical… showed no clear difference in healing - 10 years compared with root canal retreatment (non-surgical/orthograde); GRADE not reported.

2 findings from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Oral health · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

The review found no eligible studies for this question.

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Adverse effects of the interventions · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

The review found no eligible studies for this question.

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Denture-induced stomatitis · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)
1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Gingivitis · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)
1 finding from 1 review

Root-end resection (with or without root-end filling; surgical retreatment) vs Non-surgical re-treatment (orthograde root canal therapy)

Participants reporting swelling · People with one or more endodontically treated teeth and a periapical condition requiring retreatment
1 finding from 1 review
  • Endodontic procedures for retreatment of periapical lesions 2016 · Cochrane All outcomes
    first postoperative week
    Significantly higher number of participants reporting swelling in the root-end resection group than in the root canal retreatment group during the first postoperative week (Analysis 1.5); per-day totals not pooled.
    1 study
    GRADE not reported

Intervention not reported

Pain intensity (VAS) short term · patients with chronic mechanical neck pain (pain for more than 90 days)
1 finding from 1 review