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Does anyone use QUAY - an assessment of the certainty of the evidence - or any other form of rating of the reliability of data or source? How do you use it, and how do you feel about the results of such a rating?
I use it infrequently. The problem is it is personally judgemental and of no use to anyone else. I only use it to indicate both ends of the spectrum. I use a '0' (zero) for SOURces that have been discredited/wrong and I use '4' to indicate the SOURce is accurate/reliable. I don't use intermediate values.
Pretty much a subjective analysis, but regardless, the GEDCOM standard suggests reasons for each, from 0 to 3 (not a 4) and no other characters or comment.
The QUAY tag's value conveys the submitter's quantitative evaluation of the credibility of a piece of
information, based upon its supporting evidence. Some systems use this feature to rank multiple
conflicting opinions for display of most likely information first. It is not intended to eliminate the
receiver's need to evaluate the evidence for themselves.
0 = Unreliable evidence or estimated data
1 = Questionable reliability of evidence (interviews, census, oral genealogies, or potential for bias
for example, an autobiography)
2 = Secondary evidence, data officially recorded sometime after event
3 = Direct and primary evidence used, or by dominance of the evidence