Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,710 questions · 14,842 findings · 1,394 reviews

No studies found 2,880 · 19.4%GRADE not reported 1,413 · 9.5%Very low 3,103 · 20.9%Low 3,870 · 26.1%Moderate 2,663 · 17.9%High 913 · 6.2%

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Blood pressure intervention/intensive blood pressure intervention vs placebo/standard blood pressure intervention

Change in visual loss associated with PSR: visual loss is defined by the deterioration of visual acuity of 3 lines or more with the Snellen chart · type 1 or type 2 diabetics

It is very uncertain whether blood pressure intervention/intensive blood pressure intervention changes visual acuity (loss of 3 lines or more) by 5 years compared with placebo/standard blood pressure intervention (very low certainty).

1 finding from 1 review

Blood pressure intervention/intensive blood pressure intervention vs placebo/standard blood pressure intervention

Adverse events: hypotension · type 1 or type 2 diabetics

Blood pressure intervention/intensive blood pressure intervention may leads to higher adverse events—hypotension compared with placebo/standard blood pressure intervention (low certainty).

1 finding from 1 review