TRIPOD+AI statement: updated guidance for reporting clinical prediction models that use regression or machine learning methods bmj.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bmj.com Daily Mail and Mail on Sunday newspapers.
An external validation study evaluates the performance of a prediction model in new data, but many of these studies are too small to provide reliable answers. In the third article of their series on model evaluation, Riley and colleagues describe how to calculate the sample size required for external validation studies, and propose to avoid rules of thumb by tailoring calculations to the model and setting at hand.
External validation studies evaluate the performance of one or more prediction models (eg, developed previously using statistical, machine learning, or artificial intelligence approaches) in a different dataset to that used in the model development process.1 2 3 Part 2 in our series describes how to undertake a high quality external validation study,4 including the need to estimate model performance measures such as calibration (agreement between observed and predicted values), discrimination (separation between predicted values in those with and without an outcome event), o
Researchers put new findings about COVID-19 and neurodevelopmental conditions in context, tweet about new ways to analyze cortical neuroanatomy and adapt “how it started, how it’s going.”
Authors of a newly published study on the use of an antidepressant for COVID-19 claim the drug greatly reduces hospitalizations and mortality. But some experts question whether that s really what the data show.
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IPPING A BEER on a pub terrace may be the Netherlands’ holiest rite of spring. But the country’s grim incidence of covid-19, currently far higher than in Germany or Italy, has kept its pubs shut. As the weather has warmed, cries of “open the
terrasjes!” have sounded ever louder in Dutch politics, and this week the government gave in. From April 28th cafés may open outdoor seating (two people per table, maximum) between noon and 6pm. Meanwhile the state is eyeing a more permanent solution. It is funding pilot programmes to explore whether rapid testing of patrons can allow reopening of restaurants, museums, cultural events and the like.