Findings

What do systematic reviews say?

5 questions · 6 findings · 1 reviews · Dental caries

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No studies found 0 · 0%GRADE not reported 4 · 66.7%Very low 1 · 16.7%Low 0 · 0%Moderate 1 · 16.7%High 0 · 0%

Hyperfractionated radiotherapy vs Conventional (standard) fractionation radiotherapy

Total mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Hyperfractionated radiotherapy led to lower total mortality compared with conventional (standard) fractionation radiotherapy; GRADE not reported.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancer: radiotherapy 2010 · Cochrane All outcomes
HR 0.78 [0.68, 0.90]
3 studies · 966 participants
GRADE not reported

Altered fractionation radiotherapy (hyperfractionated and/or accelerated) vs Conventional (standard) fractionation radiotherapy

Total mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Hyperfractionated/accelerated radiotherapy showed no clear difference in total mortality compared with conventional (standard) fractionation radiotherapy; GRADE not reported.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancer: radiotherapy 2010 · Cochrane All outcomes
HR 0.87 [0.75, 1.00]
4 studies · 1071 participants
GRADE not reported

Altered fractionation radiotherapy (hyperfractionated and/or accelerated) vs Conventional (standard) fractionation radiotherapy

All‐cause mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

It is very uncertain whether altered fractionation radiotherapy (hyperfractionated and/or… changes mortality compared with conventional (standard) fractionation radiotherapy (very low certainty).

2 findings from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancer: radiotherapy 2010 · Cochrane All outcomes
5 years · All included studies
HR 0.86 [0.76, 0.98]
13 studies · 3751 participants
Very low
Interventions for the treatment of oral cavity and oropharyngeal cancer: radiotherapy 2010 · Cochrane All outcomes
5 years · Studies at low risk of bias (sensitivity analysis)
HR 0.93 [0.80, 1.07]
5 studies · 1511 participants
Moderate

Hyperfractionated/accelerated split-course radiotherapy vs Accelerated radiotherapy with concomitant boost

Total mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancer: radiotherapy 2010 · Cochrane All outcomes
Hyperfractionated/accelerated split course vs accelerated boost (Fu 1995, feasibility study, 75 participants): authors report no significant difference in total mortality; data not presented in a way that allows…
1 study · 75 participants
GRADE not reported

Hyperfractionated/accelerated/split-course radiotherapy vs Conventional (standard) fractionation radiotherapy

Total mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Hyperfractionated/accelerated/split-course radiotherapy showed no clear difference in total mortality compared with conventional (standard) fractionation radiotherapy; GRADE not reported.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancer: radiotherapy 2010 · Cochrane All outcomes
HR 1.02 [0.90, 1.17]
4 studies · 1299 participants
GRADE not reported