Exeter Test Group

All things related to #medical #test #evaluation | research group based at the University of Exeter Medical School, UK
We also run #ExeterTestClub

[Exeter Test Group @ExeterTestGroup]

ETG are looking for a researcher with an interest in tests who has some evaluation or health economic modelling experience. Initially to help with a one year project. Funding is available to develop this into a long term post to improve modelling of test cost-effectivness.

[Exeter Uni Jobs @UoE_Jobs]

We're looking for a Health Economist (Postdoctoral Research Associate) to work on evaluating the implementation of an artificial intelligence system for the detection of skin cancer in primary care. Apply here: https://t.co/QtwKDJd7ME

[Exeter Uni Jobs @UoE_Jobs]

We're looking for a Health Economist (Postdoctoral Research Associate) to work on evaluating the implementation of an artificial intelligence system for the detection of skin cancer in primary care. Apply here: https://t.co/QtwKDJd7ME

[UCU @ucu]

🥹 What incredible students

Watch, share and make sure everyone sees this

#ucuRISING

[Exeter Test Group @ExeterTestGroup]

Whether AI is currently being sufficiently evaluated remains legitimately under debate. Hope this pre-print shows how the evidence-base for AI could be improved through carefully collection of data as part of post-marketing surveillance.

[Exeter Test Group @ExeterTestGroup]

Exeter Test Club 4/4/2023. Fascinating talk from Tim MacDonald on developing the evidence base for a potential screening programme for neonatal diabetes. Recording available shortly https://t.co/XvEsaEv2wo Many thanks Tim.

[Exeter Test Group @ExeterTestGroup]

Comparative accuracy. Just a reminder that theres a great tool to help judge validity. Yang B, et al. QUADAS-C: A Tool for Assessing Risk of Bias in Comparative Diagnostic Accuracy Studies. Ann Intern Med. 2021 Nov;174(11):1592-1599. doi: 10.7326/M21-2234.

[Richard Riley (R²) @Richard_D_Riley]

Here's my talk on (in)stability of prediction models that covers work with @GSCollins to appear shortly

https://t.co/uY1La7zrn7

[Exeter Test Group @ExeterTestGroup]

@epi_rad @leeflang_m @pmmbossuyt Sorry to disagree Matt. There is a fundamental problem that the accuracy was assessed on different numbers of participants. This will introduce confounding into any comparisons

[Exeter Test Group @ExeterTestGroup]

@GuyattGH Important paper Gordon. Can we make it more accessible?

[Gordon H. Guyatt @GuyattGH]

Some may be surprised at the number and variety of randomized trials of diagnostic tests/strategies looking at diagnostic impact (effect on patient-important outcomes) that investigators have conducted. https://t.co/WRrR9SAMkm

[Beverley Shields @bshieldsexeter]

Exciting new PhD opportunity in our friendly and supportive team using statistical modelling of electronic healthcare records to develop precision medicine approaches for long term outcomes in Type 2 diabetes. https://t.co/iUvAPEJVE8

[Exeter Test Group @ExeterTestGroup]

In tomorrows Exeter Test Club Prof Tsaneva-Atanasova will be talking about Digital tests as diagnostic aids for mental health. “I will present our work on identifying and quantifying movement signature during human - virtual partner interaction" says @KrasiTsaneva #ExeterTestClub

[Exeter Test Group @ExeterTestGroup]

@Richard_D_Riley Perhaps we can have a crack at heterogeneity in test accuracy systematic reviews and meta-analyses next? I'm fed up with people telling me it doesn't matter🤬

[Exeter Test Group @ExeterTestGroup]

More about evidence linkage in Health technology assessment of diagnostic tests: A state of the art review of methods guidance from international organizations. International Journal of Technology Assessment in Health Care, 39(1), E14. doi:10.1017/S0266462323000065.

[Exeter Test Group @ExeterTestGroup]

More about treatment of direct evidence in Health technology assessment of diagnostic tests: A state of the art review of methods guidance from international organizations. International Journal of Technology Assessment in Health Care, 39(1), E14. doi:10.1017/S0266462323000065

[Exeter Test Group @ExeterTestGroup]

More about incorporating test claims in Health technology assessment of diagnostic tests: A state of the art review of methods guidance from international organizations. International Journal of Technology Assessment in Health Care, 39(1), E14. doi:10.1017/S0266462323000065

[Exeter Test Group @ExeterTestGroup]

This was a hard slog, but the results are important. There are many aspects of HTAs of tests which are inconsistent between national HTA organisations. Taking into account claims of tests is one. Most do, but few use these to systematically and transparently guide the HTA process

[Exeter Test Group @ExeterTestGroup]

@RoxanaDaneshjou @jd_wilko @whria78 @theJIDJournal If the only outcome is accuracy it is debatable whether this an RCT. A comparative accuracy study might be a better description based on the description in the abstract at least.

[Exeter Test Group @ExeterTestGroup]

Currently teaching our med students about tests. Often wonder whether I am doing more harm than good by cramming formulae for sensitivity etc. Exploring whether understanding of test accuracy results by direct engagement with 2x2 table might work. Thoughts welcome

[Gary Collins @GSCollins]

NEW preprint 'Stability of prediction models' @Richard_D_Riley

https://t.co/UwZ0b3Liwv

Influenced by @f2harrell 'example models', different samples from a population to train models (small/mod. N) will lead to wildly different predictions for the same individual. #statstwitter