Natural frequencies combined with graphical aids produced the highest proportion of correct post-test probability estimates in one RCT¶

Claim · All claims
Evidence · 1 study · review r3 · q3
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? One RCT found natural frequencies with graphical aids produced 73% correct post-test probability estimates, compared with 68% for probabilities with graphical aids, 48% for natural frequencies alone and 23% for probabilities alone. → Whiting Penny F 2015

Evidence¶

Whiting Penny F 2015¶

Whiting Penny F, Davenport Clare, Jameson Catherine, Burke Margaret, Sterne Jonathan A C, Hyde Chris, Ben-Shlomo Yoav. (2015). How well do health professionals interpret diagnostic information? A systematic review. BMJ Open. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4521525/

q3 · i? · review · r3

Randomised controlled trial reported within the review comparing four presentation formats for test accuracy information. Natural frequencies with graphical aids produced the highest proportion of correct estimates at 73%, versus 68%, 48% and 23% for the other formats.

"One RCT demonstrated that presenting test accuracy information as natural frequencies with graphical aids resulted in the highest proportion of correct post-test probability estimates (73%) compared with probabilities with graphical aids (68%), natural frequencies alone (48%) or probabilities alone (23%)."

Discussion¶

Related Claims¶

• Presenting accuracy data as natural frequencies rather than probabilities improves post-test probability estimation and speed of calculations — a broader claim this one bears on
• Health professionals' estimation of post-test probability is generally poor with a tendency to overestimation — related