Open sebbacon opened 5 years ago
CRUK have a PSA infographic which doesn't address all the numbers, but is visually quite nice.
It is an illustration of the Cochrane Review that finds no reduction in prostate-cancer-related mortality, so doesn't indicate (for reasonable didactic purposes) the number of extra true cancer cases found, and doesn't attempt to illustrate harm from over-treatment (which is just a footnote).
There are some interesting (if unrelated) approaches to statistical visualisation here
An excel tool for visualising the relationships between odds rations and sensitivity / selectivity
Another tool combining screening and relative risk into data tables
From Jessica's paper:
Luana Micallef had a 2012 paper comparing the effectiveness of 6 visualizations (more data):
It is cited by a couple of papers by Karin Binder et al that may be of interest:
Fab, thanks!
Tangentially related: we found this RCT recently, which compares GP understanding of post-test probability based on (a) text summary of sensitivity and specificity, (b) Fagan’s nomogram, (c) probability-modifying plot (PMP), (d) natural frequency tree. Spoiler: (c) and (d) won.
@jamesscottbrown my hypothesis is that an interactive tool with sliders to change the prior probabilities might be helpful. You've obviously been thinking about the problem too. Any thoughts yourself?
Same website has these posters:
This smiley faces approach (from Tom at North Devon) is a common approach (original)![image](https://user-images.githubusercontent.com/211271/53333953-46f03f80-38ef-11e9-96ca-37c62f342455.png)
There is a similar, animated version here, which couches it in terms of Bayes' Theorem, and includes the classic "finding terrorists" example among others:![image](https://user-images.githubusercontent.com/211271/53334619-3b9e1380-38f1-11e9-9e7b-d11aefb2f03e.png)
North Devon also piloted a diabetes test in a single practice (full write up), showing each patient their test results in context, and found a significant drop in HbA1c in patients with the intervention: