Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,918 questions · 5,537 findings · 1,803 reviews

No studies found 1,309 · 23.6%GRADE not reported 440 · 7.9%Very low 1,560 · 28.2%Low 1,292 · 23.3%Moderate 751 · 13.6%High 185 · 3.3%

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Azathioprine or 6‐mercaptopurine vs 5‐aminosalicylic acid (5‐ASA) (mesalazine)

Withdrawals due to adverse events · people with surgically‐induced remission in Crohn's disease

Azathioprine or 6‐mercaptopurine may leads to higher withdrawal due to adverse events compared with 5‐aminosalicylic acid (low certainty).

1 finding from 1 review

Azathioprine or 6‐mercaptopurine vs anti TNF‐ɑ

Withdrawals due to adverse events · people with surgically‐induced remission in Crohn's disease

Azathioprine or 6‐mercaptopurine showed no clear difference in withdrawal due to adverse events compared with anti TNF‐α (low certainty).

1 finding from 1 review

Azathioprine or 6‐mercaptopurine vs placebo

Withdrawals due to adverse events · people with surgically‐induced remission in Crohn's disease

Azathioprine or 6‐mercaptopurine showed no clear difference in withdrawal due to adverse events compared with placebo (moderate certainty).

1 finding from 1 review

Anti‐TNF discontinuation vs anti‐TNF continuation

Number of serious adverse events · people with rheumatoid arthritis with low disease activity using a standard dose of anti‐TNF agents

It is very uncertain whether anti‐TNF discontinuation changes number of serious adverse events compared with anti‐TNF continuation (very low certainty).

1 finding from 1 review

Anti‐TNF disease activity–guided dose tapering vs anti‐TNF continuation

Number of serious adverse events · people with rheumatoid arthritis with low disease activity using a standard dose of anti‐TNF agents

It is very uncertain whether anti‐TNF disease activity–guided dose tapering changes number of serious adverse events compared with anti‐TNF continuation (very low certainty).

1 finding from 1 review

Anti‐TNF dose reduction vs anti‐TNF continuation

Number of serious adverse events · people with rheumatoid arthritis with low disease activity using a standard dose of anti‐TNF agents

Anti‐TNF dose reduction showed no clear difference in number of serious adverse events compared with anti‐TNF continuation (low certainty).

1 finding from 1 review

Physical activity as part of weight reduction programme vs watchful waiting

Withdrawals due to adverse events · men with lower urinary tract symptoms secondary to benign prostatic obstruction

It is very uncertain whether physical activity as part of weight reduction programme changes withdrawal due to adverse events compared with watchful waiting (very low certainty).

1 finding from 1 review