Where are the numbers? by Norman Fenton and Martin Neil

Where are the numbers? by Norman Fenton and Martin Neil

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Where are the numbers? by Norman Fenton and Martin Neil
Where are the numbers? by Norman Fenton and Martin Neil
Why most studies into COVID19 risk factors may be producing flawed conclusions - and how to fix the problem

Why most studies into COVID19 risk factors may be producing flawed conclusions - and how to fix the problem

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Norman Fenton
May 15, 2020
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Where are the numbers? by Norman Fenton and Martin Neil
Where are the numbers? by Norman Fenton and Martin Neil
Why most studies into COVID19 risk factors may be producing flawed conclusions - and how to fix the problem
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In a new paper we extend the recent work by Griffith et al which highlights how ‘collider bias’ in studies of COVID19 undermines our understanding of the disease risk and severity. This is typically caused by the data being restricted to people who have undergone COVID19 testing, among whom healthcare workers are over-represented. For example, collider …

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