Correlation of heuristics with diagnostic error:
Representativeness: of the 33 errors detected, 17 of them showed a concordance between the FDI and the CD. In a little more than half of the diagnostic errors (51.5%) a possible use of the Representativeness heuristic could be identified. However, the statistics calculated do not show a statistically significant correlation between both variables
Availability: in 25 of the 33 diagnostic errors there is a concordance between the confirmation diagnosis and one of the differential diagnoses (DD). This represents 75.8%. However, statistical tests show no statistically significant correlation between this agreement and diagnostic error, even though, with an odds ratio of 1.73, the prevalence indicates a high probability of diagnostic error when DD=CD,
Overconfidence: In 22 of the 33 diagnostic errors they (66.7%) showed above-average confidence in the diagnosis. In terms of prevalence, with an Odds Ratio of 1.44 we obtain that the frequency of making diagnostic errors by our doctors is 44% more frequent when they show an excess of confidence. However, as in the case of the previous heuristics, the correlation is not statistically significant.