Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,938 questions · 2,020 findings · 107 reviews

No studies found 570 · 28.2%GRADE not reported 266 · 13.2%Very low 578 · 28.6%Low 462 · 22.9%Moderate 118 · 5.8%High 26 · 1.3%

Bethanechol vs Artificial saliva

Salivary flow rate (stimulated) · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

Bethanechol led to higher salivary flow rate (stimulated, ml/min) compared with artificial saliva; GRADE not reported.

2 findings from 1 review

Amifostine (intravenous) vs Amifostine (subcutaneous)

Xerostomia (grade >= 2, 0-4 scale) · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

Amifostine (intravenous) led to lower xerostomia (grade >= 2, 0-4 scale) compared with amifostine (subcutaneous); GRADE not reported.

2 findings from 1 review

Bethanechol vs placebo

Xerostomia (grade >= 2, 0-3 scale) · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

Bethanechol led to lower xerostomia (grade >= 2, 0-3 scale) compared with placebo; GRADE not reported.

2 findings from 1 review

Bethanechol vs placebo

Salivary flow rate (stimulated) · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

Bethanechol showed no clear difference in salivary flow rate (stimulated, ml/min) compared with placebo; GRADE not reported.

1 finding from 1 review

Amifostine vs no treatment/placebo

Overall survival · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

It is very uncertain whether amifostine changes overall survival compared with no treatment/placebo (very low certainty).

1 finding from 1 review

Bethanechol vs placebo

Salivary flow rate (unstimulated) · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

Bethanechol led to higher salivary flow rate (unstimulated, ml/min) compared with placebo; GRADE not reported.

1 finding from 1 review