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  • 2021-11-10 (xsd:date)
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  • Be wary of claims Covid-19 deaths soar on Tuesdays (en)
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  • Daily Covid deaths in the UK soared on 9 November 2021. This is missing key context. The number reported on that day was higher than the day before, but this happens almost every Tuesday, which usually includes the backlog from the weekend. The weekly average number of daily reported Covid-19 deaths actually fell on 9 November 2021. UK Covid deaths soar to 262 UK daily Covid deaths hit 262 in highest rise in a WEEK Several newspapers gave a misleading impression of the latest Covid-19 death figures on Tuesday 9 November 2021. While it was true that 262 deaths within 28 days of a positive Covid test were reported in the UK that day, this did not represent a rise in the general trend. The average daily number of reported Covid deaths actually fell slightly on 9 November, to about 166. The number of Covid deaths reported is often very high on Tuesdays, which generally include many deaths not reported over the weekend. Overall, deaths involving Covid have risen since the summer. On average, there have been more than 100 a day throughout the autumn. We’ve written before about how daily Covid death figures can be distorted, both upwards and downwards, by reporting delays. Stay informed Be first in line for the facts – get our free weekly email Subscribe The number of Covid-19 deaths announced each day cover those reported in England and Wales during the 24-hour period up to 5pm the previous day, and those reported in Northern Ireland and Scotland during the 24 hours to 9:30am on the day they are announced. So most deaths announced on Monday were reported on Sunday. Most announced on Sunday were reported on Saturday, and so on. However, the reporting process is generally slower at the weekend. As a result, the number of Covid-19 deaths announced on Sundays and Mondays is typically low. Then the reporting catches up on Tuesdays, when many of the missing weekend deaths are added to the day’s total, making it higher. This causes the number of Covid deaths by reporting date to rise and fall in a weekly cycle. It doesn’t mean that there are dramatic changes in the number of people dying each day. The About section on the government’s Coronavirus Dashboard says: Counts of cases, admissions, deaths, etc vary from day to day just through natural random changes, but also tend to vary throughout the week systematically, so that rates are consistently lower at weekends for example. To see how daily deaths are really changing over time, the Coronavirus Dashboard recommends looking at a weekly average. This evens out the fluctuations, because it always includes data from each day of the week. We also have data showing the number of Covid deaths by date of death, not date of reporting. However, it often takes a few days for a death to be reported, so the totals for the most recent days are usually incomplete. The dashboard shows the centred average on each day, meaning it includes the figures from the three days before and the three days after. At the time of writing, we don’t yet know the figures for the three days after 9 November, so we’ve calculated a trailing average, which includes the six days before instead. This trailing average rose in the second half of October, and has been roughly flat in November so far. The average number of daily Covid deaths has risen since the summer, whichever way of measuring you use. However, it is often misleading to say that reported deaths soared, climbed or rose on a Tuesday, as the Evening Standard, The Guardian and Sky News did on 9 November, unless you’re talking about the average. The Sun’s article put it slightly differently, saying: Yesterday, the number of Covid deaths was 57 as figures continued to decline this week. But the number of fatalities linked to Covid has shot up again today - with 262 deaths reported. Its headline and tweet said this was the highest rise in a week. But this is also misleading, because as we have seen there is almost always an apparent large rise each week, on Tuesday. After we published this fact check, we contacted The Guardian, The Sun and The Evening Standard to request corrections regarding these claims. The Sun slightly amended their article. The Guardian did not change the line in their live blog but agreed with us on the need for context when reporting these figures in future. The Evening Standard did not respond. Will you add your name for better standards in public debate? Yes, I’ll join the fight for good information (en)
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