Researchers are suggesting that coronavirus death statistics for England are way off the mark, and this is why
People living in England have become increasingly concerned in the face of Public Health England’s (PHE) figures demonstrating a relentless daily toll of more than a hundred COVID-associated deaths several days a week.
This appears to be in stark contrast to the more reassuring recovery rate in neighbouring regions (Wales, Scotland and Northern Ireland), where there are days with no COVID-associated deaths whatsoever.
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Now researchers from the Centre for Evidence-Based Medicine at the University of Oxford are suggesting the reason for this is a statistical flaw in the way that PHE compiles ‘out of hospital’ deaths data, rather than any genuine difference between the regions of the UK.
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Positive cases
“Linking data on confirmed positive cases (identified through testing by NHS and PHE laboratories and commercial partners) to the NHS Demographic Batch Service: when a patient dies, the NHS central register of patients is notified (this is not limited to deaths in hospitals). The list of all lab-confirmed cases is checked against the NHS central register each day, to check if any of the patients have died” say researchers Yoon K Loke and Carl Heneghan.
“Here, it seems that PHE regularly looks for people on the NHS database who have ever tested positive, and simply checks to see if they are still alive or not. PHE does not appear to consider how long ago the COVID test result was, nor whether the person has been successfully treated in hospital and discharged to the community. Anyone who has tested COVID positive but subsequently died at a later date of any cause will be included on the PHE COVID death figures.”
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By this PHE definition, the researchers suggest that no one with COVID in England is allowed to ever recover from their illness. A patient who has tested positive, but successfully treated and discharged from hospital, will still be counted as a COVID death even if they had a heart attack or were run over by a bus three months later.
This, it’s suggested, is why the PHE figures vary substantially from day to day. For example, 16 new deaths were announced on 6th July, but the following day, 152 were reported – the figure for 16th July was 66.
Treated and discharged
PHE data also confirms that more than 125,000 patients have been admitted to NHS hospitals for COVID, the majority being successfully treated and discharged. There are now fewer than 1900 patients in hospital. So, roughly 80,000 recovered patients in the community will continue being monitored by PHE for the daily death statistics. More and more people (who are mainly in the older age group) are being discharged to the community, but they clearly may die of other illnesses.
This, the research suggests, is why ‘out of hospital setting’ deaths remain constantly high, even though the Office of National Statistics data shows there have been fewer deaths than the five year average in the last three weeks, and NHS England data shows a moving average of 19 deaths per day in hospital.
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The researchers say: “It’s time to fix this statistical flaw that leads to an over-exaggeration of COVID-associated deaths. One reasonable approach would be to define community COVID-related deaths as those that occurred within 21 days of a COVID positive test result.
“In summary, PHE’s definition of the daily death figures means that everyone who has ever had COVID at any time must die with COVID too. So, the COVID death toll in Britain up to July 2020 will eventually exceed 290,000, if the follow-up of every test-positive patient is of long enough duration.”
Steady decline
Statistics quoted in the report confirm a gradual but steady decline in NHS England deaths in hospital, but there is a persistent pattern where ‘out of hospital’ data are contributing hundreds of additional deaths to the daily figures, and this shows no signs of letting up.
“Indeed, there were more than 100 non-hospital daily deaths recorded on 14 occasions over the last 30 days,” say the researchers. “The fluctuations across the working week and weekends are likely related to the intermittent frequency of database updates and subsequent inclusion of data not captured from previous weeks.”
The research has not been peer-reviewed, and the views expressed commentary represent the views of the authors and not necessarily those of the host institution, the NHS, the NIHR, or the Department of Health and Social Care.
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Profesor Yoon K Loke is Professor of Medicine and Pharmacology, Norwich Medical School, University of East Anglia; Carl Heneghan is Professor of Evidence-Based Medicine and Director of Studies for the Evidence-Based Health Care Programmes.
If it’s true that the relentless daily toll of more than a hundred COVID-associated deaths several days a week in England is a result of a statistical anomaly in figures from Public Health England (PHE), perhaps people should be concerned at whether these figures are demonstrating the real facts of the pandemic.
