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Table 1 Scheme to express level of confidence.

From: We’re only in it for the knowledge? A problem solving turn in environment and health expert elicitation

4
Very high confidence.
3
High confidence.
2
Medium confidence.
1
Low confidence.
0
Very low confidence.
At least a 9 out of 10 chance of being correct. At least an 8 out of 10 chance of being correct. At least a 5 out of 10 chance of being correct. At least a 2 out of 10 chance of being correct. Less than a 1 out of 10 chance of being correct.
  1. In: IPCC: Fourth Assessment Report. Climate change 2007: Synthesis report; 2007.