Data for testing

Michael Marshn made this Freedom of Information request to Office for National Statistics

Automatic anti-spam measures are in place for this older request. Please let us know if a further response is expected or if you are having trouble responding.

The request was partially successful.

Dear Office for National Statistics,

Please can you provide the following information:

*A weekly data set of actual covid deaths that have occurred in patients with whom have no pre-existing medical conditions / co-morbidities; up to present date (13/04/2021) for the U.K, if the data is available.

*A weekly or monthly figure for unconfirmed Covid-19 deaths (deaths that have occurred without a positive test result from either a lateral flow or PCR test), up to present date of the data being collected.

*A total monthly figure of tests (in totality) undertaken by staff members within the U.K, up to present date of the data being collected.

*A monthly figure in a easy read document (to date) of all staff within U.K, who have been required to retest after a positive lateral flow result, with a PCR test.

*Should a staff member or an inpatient receive a 2nd positive test result, are both positive test results being inputted in to the daily figures as two positive cases? Or is there differentiation between the groups?.

*At what CT value is the PCR test conducted at? And is this individualised to a Trust or set nationally.

*What has been identified the false positive rate to be of the PCR test to date ?

Yours faithfully,

Michael Marshn

system@share.ons.gov.uk,

Workflow Notification

show quoted sections

For the latest data on the economy and society, consult our
website at [3]http://www.ons.gov.uk

show quoted sections

Legal Disclaimer:  Any views expressed by the sender of this message are
not necessarily those of the Office for National Statistics
***********************************************************************************************

References

Visible links
1. mailto:[ONS request email]
2. http://ons.gov.uk/coronavirus
3. http://www.ons.gov.uk/

FOI Team, Office for National Statistics

Link: [1]File-List
Link: [2]themeData
Link: [3]colorSchemeMapping

Our Reference:

 

Dear

 

Thank you for your email requesting data pertaining to

 

I am writing to confirm that the Office for National Statistics has now
completed its search for the information which you requested and the
response can be found here:

 

You have the right to have this response to your Freedom of Information
request reviewed internally by an internal review process and, if you
remain unhappy with the decision, by the Information Commissioner. If you
would like to have the decision reviewed please email the Freedom of
Information Team at ‘[ONS request email]’ or write to The FoI Team, Room
1100, Office for National Statistics, Segensworth Road, Titchfield PO15
5RR, and mark your correspondence "Internal Review".

If you have any queries about this email, please contact the Freedom of
Information Team ('[ONS request email]').

Please remember to quote the reference number above in any future
communications.

 

The Freedom of Information Team

Office for National Statistics

 

For information on Coronavirus, please visit [4]ONS.gov.uk/coronavirus

 

References

Visible links
1. file:///tmp/cid:filelist.xml@01D6E9CA.E56AB6D0
2. file:///tmp/~~themedata~~
3. file:///tmp/~~colorschememapping~~
4. http://ons.gov.uk/coronavirus

FOI Team, Office for National Statistics

Our Reference: FOI/2021/2176

 

Dear Michael

 

Thank you for your email requesting data pertaining to Confirmed and
unconfirmed COVID-19 deaths, PCR testing and false positive rate.

 

I am writing to confirm that the Office for National Statistics has now
completed its search for the information which you requested and the
response can be found here:

You Asked:

Please can you provide the following information:

 1. A weekly data set of actual COVID-19 deaths that have occurred in
patients with whom have no pre-existing medical conditions /
co-morbidities; up to present date (13/04/2021) for the U.K, if the
data is available.
 2. A weekly or monthly figure for unconfirmed COVID-19 deaths (deaths
that have occurred without a positive test result from either a
lateral flow or PCR test),  up to present date of the data being
collected.
 3. A total monthly figure of tests (in totality) undertaken by staff
members within the U.K, up to present date of the data being
collected.
 4. A monthly figure in a easy read document  (to date) of all staff
within U.K, who have been required to retest after a positive lateral
flow result, with a PCR test.
 5. Should a staff member or an inpatient receive a 2nd positive test
result, are both positive test results being inputted in to the daily
figures as two positive cases? Or is there differentiation between the
groups?.
 6. At what CT value is the PCR test conducted at? And is this
individualised to a Trust or set nationally.
 7. What has been identified the false positive rate to be of the PCR test
to date ? 

 

We Said:

​Thank you for your enquiry.

1. COVID deaths by pre-existing condition

Unfortunately, we do not hold analysis showing weekly data for COVID-19
deaths with pre-existing conditions  In order to fulfil this request, we
would need use to create bespoke analysis. Under the Freedom of
Information Act 2000, Public Authorities are not obligated to create
information to respond to requests. We therefore consider this to be
information not held.

However, please see the following analysis, which may be of interest:

For January to July 2020, this information is available in our [1]Deaths
involving COVID-19, England and Wales - Office for National Statistics
(ons.gov.uk) publication. Table 6a shows deaths involving COVID and
pre-existing conditions for ages 0-44 and then 5-year age band after the
age of 45.

We also hold the following analysis: [2]Pre-existing conditions of people
who died due to COVID-19, England and Wales - Office for National
Statistics. This provides deaths from January 2020 to December 2020 by two
age groups in the dataset in table 2. This is the latest data available.

England

+--------------------------------------------------------------------------------------+
|Number of |January|​ |April|​ |July to |​ |October |​ |January |​ |
|PRE-EXISTING|to | |to | |September| |to | |to | |
|CONDITIONS |March | |June | |2020 | |December| |December| |
| |2020 | |2020 | | | |2020 | |2020 | |
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|​ |Aged |Aged |Aged |Aged |Aged 1-64|Aged |Aged |Aged |Aged |Aged |
| |1-64 |65 |1-64 |65 and|years |65 |1-64 |65 |1-64 |65 and|
| |years |and |years|over | |and |years |and |years |over |
| | |over | | | |over | |over | | |
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|0 |27 |137 |949 |4,620 |59 |213 |406 |2,238|1,441 |7,208 |
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|1 |67 |336 |1,329|11,712|70 |433 |588 |5,615|2,054 |18,096|
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|2 |44 |366 |1,085|10,219|47 |447 |507 |5,754|1,683 |16,786|
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|3 |46 |298 |655 |6,734 |28 |338 |322 |4,123|1,051 |11,493|
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|4 |12 |130 |317 |3,147 |15 |163 |134 |1,907|478 |5,347 |
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|5 or more |11 |91 |160 |1,915 |7 |133 |78 |1,093|256 |3,232 |
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|Proportion |13.0% |10.1%|21.1%|12.0% |26.1% |12.3%|20.0% |10.8%|20.7% |11.6% |
|with no | | | | | | | | | | |
|pre-existing| | | | | | | | | | |
|conditions | | | | | | | | | | |
|------------+-------+-----+-----+------+---------+-----+--------+-----+--------+------|
|Mean number |1.92 |2.20 |1.70 |1.97 |1.55 |2.17 |1.73 |2.09 |1.71 |2.02 |
|of | | | | | | | | | | |
|pre-existing| | | | | | | | | | |
|conditions | | | | | | | | | | |
+--------------------------------------------------------------------------------------+

Wales

+------------------------------------------------------------------------------------+
|Number of |January|​ |April|​ |July to |​ |October |​ |January |​ |
|PRE-EXISTING|to | |to | |September| |to | |to | |
|CONDITIONS |March | |June | |2020 | |December| |December| |
| |2020 | |2020 | | | |2020 | |2020 | |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|​ |Aged |Aged |Aged |Aged |Aged 1-64|Aged |Aged |Aged |Aged |Aged |
| |1-64 |65 |1-64 |65 |years |65 |1-64 |65 |1-64 |65 |
| |years |and |years|and | |and |years |and |years |and |
| | |over | |over | |over | |over | |over |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|0 |1 |7 |56 |339 |2 |12 |49 |285 |108 |643 |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|1 |3 |23 |59 |653 |4 |28 |50 |617 |116 |1,321|
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|2 |0 |15 |51 |470 |2 |27 |38 |477 |91 |989 |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|3 |0 |6 |25 |294 |1 |19 |24 |275 |50 |594 |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|4 |0 |3 |11 |119 |1 |9 |9 |143 |21 |274 |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|5 or more |1 |4 |5 |73 |0 |4 |6 |72 |12 |153 |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|Proportion |20.0% |12.1%|27.1%|17.4%|20.0% |12.1%|27.8% |15.2%|27.1% |16.2%|
|with no | | | | | | | | | | |
|pre-existing| | | | | | | | | | |
|conditions | | | | | | | | | | |
|------------+-------+-----+-----+-----+---------+-----+--------+-----+--------+-----|
|Mean number |1.80 |1.79 |1.49 |1.73 |1.50 |2.05 |1.50 |1.81 |1.50 |1.77 |
|of | | | | | | | | | | |
|pre-existing| | | | | | | | | | |
|conditions | | | | | | | | | | |
+------------------------------------------------------------------------------------+

2021 data will be published on 20 May 2021. 

 

2. COVID-19 deaths without PCR test.

For deaths involving COVID-19, whether or not there was a positive test
result is only one piece of information to be taken into account,
alongside the patient's symptoms and other evidence. So, a death can be
certified as involving COVID-19 without a positive test, based on any
sound medical evidence, like observed symptoms or X-ray images of the
lungs. In the absence of a test result, the doctor may sometimes certify
the death as 'suspected' COVID-19.

ONS data as described here are different from the figures on COVID-19
deaths published on the government's [3]COVID-19 dashboard which shows
'deaths within 28 days of a positive test'. You can read a blog by
Professor John Newton of Public Health England [4]about the complexities
of counting COVID-19 deaths and the different methods used.

Unfortunately, we would be unable to provide you with weekly data for
COVID-19 deaths without a PCR test. In order to fulfil this request, we
would need to create bespoke analysis. Under the Freedom of Information
Act 2000, Public Authorities are not obligated to create information to
respond to requests. We therefore consider this to be information not
held.

However, we do hold the following analysis, which may be of interest:

For COVID-19 deaths with a positive test result, we use ICD-10 code U0.71
and for suspected COVID we use ICD-10 U0.72.  You can find this
information in our [5]Monthly mortality analysis in the "Definition of
COVID" paragraph as a cumulative total.

As of our March publication (latest available data), Of the 122,683 deaths
due to COVID-19, 4,009 (3.3%) were classified as "suspected" COVID-19.
Including all deaths involving COVID-19 (137,570 deaths), "suspected"
COVID-19 was recorded on 3.3% (4,587 deaths) of all deaths involving
COVID-19 in England and Wales. This information will be updated with April
deaths on 22^nd May 2021. 

 

3, 4, 5 & 6.COVID-19 tests taken by staff and PCR testing

The COVID-19 Infection Survey (CIS) is a household survey which refers to
the number of current COVID-19 infections within the community population;
community in this instance refers to private residential households and it
excludes those in hospitals, care homes or other institutional settings. 

In response to questions 3 and 4, in the [6]dataset accompanying our 22
February 2021 [7]article, on tabs 3a and 3b you can find the percentage of
people testing positive by occupation, the sample size for each occupation
group will tell you how many people in each occupation were tested in
England.  Alternatively, daily publication of testing numbers are found on
the Government COVID-19 [8]dashboard. These figures can be found daily and
testing figures can be separated by pillar.

Public Health England (PHE) are responsible for PCR testing so would be
better placed to assist with your queries on testing. They can be
contacted via email at [9][email address]. 

We publish percentage and Ct values of COVID-19 cases in the [10]technical
dataset accompanying our [11]weekly bulletin. These can be found on tab
1a for the UK and tab 1b for a breakdown by English regions.  

 

7. False positive rate

A test's specificity measures how often the test correctly identifies
those who do not have the virus, in effect it is a check of the false
positive rate of a test; the higher a test's specificity, the lower the
number of false positives. We know the specificity of our RT-PCR test must
be very close to 100%, in particular, the data suggest that the
false-positive rate is very low -- under 0.005%. For more information on
the accuracy of PCR and Lateral Flow testing, please see
this [12]study and our recently published [13]blog. Additionally, we have
also published further information on test specificity and sensitivity in
our [14]Methods article under section 5.

 

You have the right to have this response to your Freedom of Information
request reviewed internally by an internal review process and, if you
remain unhappy with the decision, by the Information Commissioner. If you
would like to have the decision reviewed please email the Freedom of
Information Team at ‘[ONS request email]’ or write to The FoI Team, Room
1100, Office for National Statistics, Segensworth Road, Titchfield PO15
5RR, and mark your correspondence "Internal Review".

If you have any queries about this email, please contact the Freedom of
Information Team ('[ONS request email]').

Please remember to quote the reference number above in any future
communications.

 

The Freedom of Information Team

Office for National Statistics

 

For information on Coronavirus, please visit [15]ONS.gov.uk/coronavirus

 

References

Visible links
1. https://www.ons.gov.uk/peoplepopulationa...
2. https://www.ons.gov.uk/peoplepopulationa...
3. https://coronavirus.data.gov.uk/
4. https://publichealthmatters.blog.gov.uk/...
5. https://www.ons.gov.uk/peoplepopulationa...
6. https://www.ons.gov.uk/peoplepopulationa...
7. https://www.ons.gov.uk/peoplepopulationa...
8. https://coronavirus.data.gov.uk/
9. mailto:[email address]
10. https://www.ons.gov.uk/peoplepopulationa...
11. https://www.ons.gov.uk/peoplepopulationa...
12. https://assets.publishing.service.gov.uk...
13. https://blog.ons.gov.uk/2021/04/09/accur...
14. https://www.ons.gov.uk/peoplepopulationa...
15. http://ons.gov.uk/coronavirus

Dear FOI Team,

I appreciate your response, however the document format is not open to interpretation. Please could this be reformatted so it could be readable and the data be visible for the correct data.

Yours sincerely,

Michael Marshn

FOI Team, Office for National Statistics

Dear Michael,

Thank you for your email.

Please accept our apologies. The formatting of the tables in our response appears to have been jumbled a little when sent when sent through the What Do They Know website.

Please see the following link, which is the published version of your FOI request: https://www.ons.gov.uk/aboutus/transpare...

Should you have any further questions about your request, please do not hesitate to contact us again.

Kind regards,
 
The Freedom of Information Team | UK Statistics Authority | Awdurdod Ystadegau’r Deyrnas Unedig
@UKStatsAuth | [email address] | http://www.statisticsauthority.gov.uk

show quoted sections