data, models or analyses, then
the following scale of confidence levels is used to express the assessed chance of a finding being correct: very high confidence at least 9 out
of 10; high confidence about 8 out of 10; medium confidence about 5 out of 10;
low confidence about 2 out of 10; and very
low confidence less
than 1 out of 10.
Where uncertainty in specific outcomes is assessed using expert
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