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OpenSAFELY Service Restoration Observatory Monthly Dashboard: Eleven key measures for monitoring general practice clinical activity during COVID-19

Description
This report describing trends and variation in clinical activity codes using a set of key measures indicative of overall activity to evaluate NHS service restoration throughout the COVID-19 pandemic. This analysis is run on data for patients registered at a TPP practice. This covers 40% of the population of England. For details on the results presented here, please refer to the main report or to the accompanying preprint linked below.
Authors
Louis Fisher, Helen J. Curtis, Richard Croker, Milan Wiedemann, Victoria Speed, Christopher Wood, Andrew Brown, Lisa EM Hopcroft, Rose Higgins, Jon Massey, Peter Inglesby, Caroline E. Morton, Alex J. Walker, Jessica Morley, Amir Mehrkar, Seb Bacon, George Hickman, Orla Macdonald, Tom Lewis, Marion Wood, Martin Myers, Miriam Samuel, Robin Conibere, Wasim Baqir, Harpreet Sood, Charles Drury, Kiren Collison, Chris Bates, David Evans, Iain Dillingham, Tom Ward, Simon Davy, Rebecca M. Smith, William Hulme, Amelia Green, John Parry, Frank Hester, Sam Harper, Jonathan Cockburn, Shaun O'Hanlon, Alex Eavis, Richard Jarvis, Dima Avramov, Paul Griffiths, Aaron Fowles, Nasreen Parkes, Brian MacKenna, Ben Goldacre
Contact
Get in touch and tell us how you use this report or new features you'd like to see: team@opensafely.org
First published
25 Oct 2023
Last released
12 Apr 2024
Links

Summary of results

These key measures demonstrated substantial changes in clinical activity throughout the COVID-19 pandemic. Using our classification of activity change methods, six of the measures recovered to their pre-pandemic baseline within a year of the pandemic, showing a rapid, adaptive response by primary care in the midst of a global health pandemic. The remaining five measures showed a more sustained drop in activity; asthma and COPD reviews did not recover to their pre-pandemic baseline until around August 2021 and blood pressure monitoring, cardiovascular disease risk assessment and medication reviews had a sustained drop in activity that persisted up to December 2021. Since December 2021 activity rates for all measures have recovered and in some cases are now above the pre-pandemic baseline.

Findings in context

Discussion of the specific causes and reasons for the changes in narrow measures of clinical activity we have described is best addressed through quantitative analyses that identify practices in high and low deciles to approach for targeted qualitative interviews with patients and front line staff. However we believe the following broad points may help aid interpretation. Our measures reflect only a few areas of high volume clinical activity; decreases may reflect appropriate prioritisation of other clinical activity. For example NHS Health Checks, which are used to detect early signs of high blood pressure, heart disease or type 2 diabetes, were paused during the pandemic; this is likely to explain the sustained drop in activity in cardiovascular disease risk assessment and blood pressure monitoring. However, in specific cases this may reflect changes in the style of delivery of a clinical activity, rather than the volume: for example, where patients record their own blood pressure at home since, as we have previously highlighted, home monitoring of blood pressure may not be recorded completely or consistently in GP records. In addition, not all reductions should be interpreted as problematic: as part of the COVID-19 recovery, health systems are aiming to be more resilient, responsive and sustainable; complete recovery may not always be appropriate and reductions in clinical activity across some domains may reflect rational reprioritisation of activity. Where these changes in priority have not been nationally planned, data analyses such as ours may help to rapidly identify the pragmatic changes in prioritisation being made by individual dispersed organisations or people across the healthcare ecosystem before those changes are explicitly surfaced or discussed through other mechanisms. For more detail, please see our published manuscript here.

Blood Pressure Monitoring

The codes used for this measure are available in this codelist.

What is it and why does it matter?

A commonly-used assessment used to identify patients with hypertension or to ensure optimal treatment for those with known hypertension. This helps ensure appropriate treatment, with the aim of reducing long term risks of complications from hypertension such as stroke, myocardial infarction and kidney disease.

Caveats

We use codes which represent results reported to GPs so tests requested but not yet reported are not included. Only test results returned to GPs are included, which will usually exclude tests requested while a person is in hospital and other settings like a private clinic.

Practices included: 2564

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
72313002 Systolic arterial pressure 94.82
413606001 Average home systolic blood pressure 4.04
407554009 Sitting systolic blood pressure 0.51
314449000 Average 24 hour systolic blood pressure 0.21
407556006 Lying systolic blood pressure 0.15

Total events: 72.00M

Cardiovascular Disease 10 year Risk Assessment

The codes used for this measure are available in this codelist.

What is it and why does it matter?

A commonly-used risk assessment used to identify patients with an increased risk of cardiovascular events in the next 10 years. This helps ensure appropriate treatment, with the aim of reducing long term risks of complications such as stroke or myocardial infarction.

Practices included: 2560

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
718087004 QRISK2 cardiovascular disease 10 year risk score 98.55
763244005 QRISK cardiovascular disease 10 year risk calculator score 0.86
1085871000000105 QRISK3 cardiovascular disease 10 year risk calculator score 0.56
809311000000105 Joint British Societies cardiovascular disease risk score 0.02
752451000000100 Cardiovascular disease risk assessment by third party 0.01

Total events: 9.16M

Cholesterol Testing

The codes used this measure are available in Codelist.

What is it and why does it matter?

A commonly-used blood test used as part of a routine cardiovascular disease 10 year risk assessment and also to identify patients with lipid disorders (e.g. familial hypercholesterolaemia). This helps ensure appropriate treatment, with the aim of reducing long term risks of complications such as stroke or myocardial infarction.

Caveats

We use codes which represent results reported to GPs so tests requested but not yet reported are not included. Only test results returned to GPs are included, which will usually exclude tests requested while a person is in hospital and other settings like a private clinic.

Practices included: 2561

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
1005671000000105 Serum cholesterol level 99.05
1017161000000104 Plasma total cholesterol level 0.72
850981000000101 Cholesterol level 0.23
395153009 Pre-treatment serum cholesterol level < 0.005

Total events: 32.93M

Liver Function Testing - Alanine Transferaminase (ALT)

The codes used for this measure are available in this codelist.

What is it and why does it matter?

An ALT blood test is one of a group of liver function tests (LFTs) which are used to detect problems with the function of the liver. It is often used to monitor patients on medications which may affect the liver or which rely on the liver to break them down within the body. They are also tested for patients with known or suspected liver dysfunction.

Caveats

In a small number of places, an ALT test may NOT be included within a liver function test. We use codes which represent results reported to GPs so tests requested but not yet reported are not included. Only test results returned to GPs are included, which will usually exclude tests requested while a person is in hospital and other settings like a private clinic.

Practices included: 2563

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
1018251000000107 Serum alanine aminotransferase level 96.67
1013211000000103 Plasma alanine aminotransferase level 3.23
250637003 Alanine aminotransferase - blood measurement 0.05
34608000 Alanine aminotransferase measurement 0.05

Total events: 50.71M

Thyroid Testing

The codes used for this measure are available in this codelist.

What is it and why does it matter?

TSH is used for the diagnosis and monitoring of hypothyroidism and hyperthyroidism, including making changes to thyroid replacement therapy dosing.

Caveats

We use codes which represent results reported to GPs so tests requested but not yet reported are not included. Only test results returned to GPs are included, which will usually exclude tests requested while a person is in hospital and other settings like a private clinic.

Practices included: 2562

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
1022791000000101 Serum thyroid stimulating hormone level 97.9
1022801000000102 Plasma thyroid stimulating hormone level 1.87
1027151000000105 Thyroid stimulating hormone level 0.23

Total events: 32.64M

Full Blood Count - Red Blood Cell (RBC) Testing

The codes used for this measure are available in this codelist.

What is it and why does it matter?

RBC is completed as part of a group of tests referred to as a full blood count (FBC), used to detect a variety of disorders of the blood, such as anaemia and infection.

Caveats

We use codes which represent results reported to GPs so tests requested but not yet reported are not included. Only test results returned to GPs are included, which will usually exclude tests requested while a person is in hospital and other settings like a private clinic.

Practices included: 2563

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
1022451000000103 Red blood cell count 100.0

Total events: 52.61M

Glycated Haemoglobin A1c Level (HbA1c)

The codes used for this measure are available in this codelist.

What is it and why does it matter?

HbA1c is a long term indicator of diabetes control. NICE guidelines recommend that individuals with diabetes have their HbA1c measured at least twice a year. Poor diabetic control can place individuals living with diabetes at an increased risk of the complications of diabetes.

Caveats

We use codes which represent results reported to GPs so tests requested but not yet reported are not included. Only test results returned to GPs are included, which will usually exclude tests requested while a person is in hospital and other settings like a private clinic.

Practices included: 2561

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
999791000000106 Haemoglobin A1c level - International Federation of Clinical Chemistry and Laboratory Medicine standardised 99.55
1003671000000109 Haemoglobin A1c level 0.36
43396009 Hemoglobin A1c measurement 0.09
365845005 Hemoglobin A1C - diabetic control finding < 0.005

Total events: 42.31M

Renal Function Assessment - Sodium Testing

The codes used for this measure are available in this codelist.

What is it and why does it matter?

Sodium is completed as part of a group of tests referred to as a renal profile, used to detect a variety of disorders of the kidneys. A renal profile is also often used to monitor patients on medications which may affect the kidneys or which rely on the kidneys to remove them from the body.

Caveats

We use codes which represent results reported to GPs so tests requested but not yet reported are not included. Only test results returned to GPs are included, which will usually exclude tests requested while a person is in hospital and other settings like a private clinic.

Practices included: 2563

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
1000661000000107 Serum sodium level 97.91
1017381000000106 Plasma sodium level 2.09

Total events: 61.47M

Asthma Reviews

The codes used for this measure are available in this codelist.

What is it and why does it matter?

The British Thoracic Society and Scottish Intercollegiate Guidelines Network on the management of asthma recommend that people with asthma receive a review of their condition at least annually. If a patient has not been reviewed, it is possible that their asthma control may have worsened, leading to a greater chance of symptoms and admission to hospital.

Practices included: 2554

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
394700004 Asthma annual review 53.82
401182001 Asthma monitoring by nurse 19.81
394720003 Asthma medication review 18.86
394701000 Asthma follow-up 5.56
754061000000100 Asthma review using Royal College of Physicians three questions 0.84

Total events: 6.49M

Chronic Obstructive Pulmonary Disease (COPD) Reviews

The codes used for this measure are available in this codelist.

What is it and why does it matter?

It is recommended by NICE that all individuals living with COPD have an annual review with the exception of individuals living with very severe (stage 4) COPD being reviewed at least twice a year. If a patient has not been reviewed, it is possible that their COPD control may have worsened, leading to a greater chance of symptoms and admission to hospital.

Practices included: 2552

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
394703002 Chronic obstructive pulmonary disease annual review 93.92
760621000000103 Chronic obstructive pulmonary disease 6 monthly review 3.17
760601000000107 Chronic obstructive pulmonary disease 3 monthly review 2.91

Total events: 2.33M

Medication Reviews

The codes used for this measure are a combination of codes available in this NHS Digital care planning medication review refset (Note refset now inactive, but codes within refset are frequently used and so continue to be included within this report) and this primary care domain medication review refset.

What is it and why does it matter?

Many medicines are used long-term and they should be reviewed regularly to ensure they are still safe, effective and appropriate. Medication review is a broad term ranging from a notes-led review without a patient, to an in-depth Structured Medication Review with multiple appointments and follow-up. The codelist provided captures all types of reviews to give an overview of medication reviews in primary care.

Practices included: 2564

Most Common Codes (Codelist)

Code Description Proportion of codes (%)
314530002 Medication review done 58.31
88551000000109 Medication review with patient 6.61
93311000000106 Medication review of medical notes 3.62
719329004 Medication review done by pharmacist 3.57
182836005 Review of medication 3.54

Total events: 50.36M