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Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,923 questions · 1,956 findings · 143 reviews · Musculoskeletal

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No studies found 555 · 28.4%GRADE not reported 107 · 5.5%Very low 255 · 13%Low 555 · 28.4%Moderate 357 · 18.3%High 127 · 6.5%

Tramadol vs placebo

Number experiencing adverse effects · Patients with osteoarthritis of the knee or hip

Tramadol alone probably leads to higher number of participants experiencing any adverse events compared with placebo (moderate certainty).

1 finding from 1 review

Tramadol vs placebo

Withdrawals due to adverse events · Patients with osteoarthritis of the knee or hip

Tramadol alone probably leads to higher number of participants who withdrew due to adverse events compared with placebo (moderate certainty).

1 finding from 1 review

Tramadol vs placebo

Number of participants experiencing any serious adverse events · Patients with osteoarthritis of the knee or hip

Tramadol alone may leads to higher number of participants experiencing any serious adverse events compared with placebo (low certainty).

1 finding from 1 review