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Evidence found and GRADE certainty

4,317 questions · 75,239 findings · 5,342 reviews

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No studies found 15,213 · 20.2%GRADE not reported 10,323 · 13.7%Very low 17,528 · 23.3%Low 17,951 · 23.9%Moderate 11,190 · 14.9%High 3,034 · 4%

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Microwave coagulation vs radiofrequency ablation

Recurrence of liver metastases local progression · people with liver metastases

It is very uncertain whether microwave coagulation changes recurrence of liver metastases local progression compared with radiofrequency ablation (very low certainty).

1 finding from 1 review

Microwave coagulation vs radiofrequency ablation

Recurrence of liver metastases distant recurrence · people with liver metastases

It is very uncertain whether microwave coagulation changes recurrence of liver metastases distant recurrence compared with radiofrequency ablation (very low certainty).

1 finding from 1 review

Nicotine EC vs NRT

Smoking cessation · people who smoke

Nicotine EC leads to higher smoking cessation at 6 months to 1 year compared with NRT (high certainty).

1 finding from 1 review

Nicotine EC vs NRT

Adverse events at 4 weeks to 6 months Assessed by self‐report · people who smoke

Nicotine EC showed no clear difference in adverse events at 4 weeks to 6‐9 months Assessed by self‐report compared with NRT (moderate certainty).

1 finding from 1 review

Nicotine EC vs NRT

Serious adverse events at 4 weeks to 1 year Assessed via self‐report and medical records · people who smoke

Nicotine EC showed no clear difference in serious adverse events at 4 weeks to 1 year Assessed via self‐report… compared with NRT (low certainty).

1 finding from 1 review

Nicotine EC vs non‐nicotine EC

Adverse events at 1 week to 6 months Assessed via self‐report · People who smoke cigarettes

Nicotine EC showed no clear difference in adverse events at 1 week to 6 months Assessed via self‐report compared with non‐nicotine EC (moderate certainty).

1 finding from 1 review

Nicotine EC vs non‐nicotine EC

Serious adverse events at 1 week to 1 year Assessed via self‐report and medical records · People who smoke cigarettes

Nicotine EC showed no clear difference in serious adverse events at 1 week to 1 year Assessed via self‐report… compared with non‐nicotine EC (low certainty).

1 finding from 1 review