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Publication, Part of

National Estimates, August 2022 to March 2023

Official statistics

Publication Date:
8 Jun 2023
Geographic Coverage:
England
Geographical Granularity:
Clinical Commissioning Groups, Councils with Adult Social Services Responsibilities (CASSRs), Independent Sector Health Care Providers, Provider, Mental Health Trusts, Regions, Ambulance Trusts, NHS Trusts, Clinical Commissioning Regions, Country
Date Range:
01 Sep 2021 to 31 Mar 2023

Re-release of Performance October 2022 Imputed National Estimates following reprocessing.

Shortly after the imputed national estimates for Performance October 2022 were published on 12 January 2023, the data used to calculate the factors for each month was reprocessed. In a small number of cases, published data did not not cover the full twelve month period between August 2021 and July 2022. As such, data has been reprocessed to cover the full twelve month period and factors have been recalculated. The change was very minor and only affected a small number of metrics.

The imputed national estimates for Performance October 2022 have now been updated and available as 'version 2' under 'Resources' below.

9 February 2023 09:30 AM

'Official Statistics' designation

A note was added to all monthly publications from Performance August 2022 to Performance March 2023 inclusive, informing users that the  ‘Official Statistics’ designation did not apply to those editions, as a cyber incident had substantially impacted the ability of 13 mental health service providers to submit data.

As of Performance April 2023, the impact of the cyber incident has substantially diminished.  As a result, the ‘Official Statistics’ designation has now been been reinstated.

The Data Quality chapter provides an assessment of the quality of the statistical output of the MHSDS Monthly publication series.  This is set out in reference to the UK Statistics Authority (UKSA) Code of Practice for Official Statistics.

12 January 2023 09:30 AM

Page contents

Summary

NHS England excluded observed national data from the main publication for all months from August 2022 to March 2023 inclusive. This was in response to a cyber incident which meant that it was considered inappropriate to publish actual national level given that it would not have been an accurate reflection of activity for those months.

As an interim measure for all months from August 2022 to March 2023 inclusive, NHS England produced national level estimates, calculated through imputation, and made them available on this supplementary page.

As of Performance April 2023, the impact of the cyber incident has substantially diminished, and as a result, observed national data has been reinstated into the main publication.

National data will no longer be imputed and this page will no longer be updated.

Background

The recent cyber incident impacted the following Mental Health Service providers:

NNV - YOUR HEALTHCARE
NO6 - RETHINK MENTAL ILLNESS
NV2 - THE HUNTERCOMBE GROUP
R1A - WORCESTERSHIRE HEALTH AND CARE NHS TRUST
RNK - TAVISTOCK AND PORTMAN NHS FOUNDATION TRUST
RNU - OXFORD HEALTH NHS FOUNDATION TRUST
RQ3 - BIRMINGHAM WOMEN'S AND CHILDREN'S NHS FOUNDATION TRUST
RV5 - SOUTH LONDON AND MAUDSLEY NHS FOUND TRUST
RWV - DEVON PARTNERSHIP NHS TRUST
RXA - CHESHIRE & WIRRAL PARTNERSHIP NHS FOUNDATION TRUST
RY6 - LEEDS COMMUNITY HEALTHCARE NHS TRUST
RYG - COVENTRY & WARKS PARTNERSHIP NHS TRUST
TAF - CAMDEN & ISLINGTON NHS FOUNDATION TRUST

It has been necessary to impute the National Measures assuming these providers are not submitting data.

While NHS England work with providers to try and improve the data for those affected by the cyber incident, a set of data files presenting national level data using imputed values is being published to provide users with estimates of national activity.

The files below provide national level data and present the observed value from the providers known to not be impacted by the cyber incident, the factor applied for each measure and the imputed value.

For the measures which have been recalculated using the imputed values, the factor will be blank.


Methodology

In order to create estimates from the data submitted for Performance August 2022 onwards, data was run for the period August 2021 to July 2022 to create national totals for all providers and national totals excluding the 13 impacted providers listed above. From this, NHS England was able to calculate the average percentage difference across the 12 month period. We were then able to apply this factor to the current observed values from the data submitted to MHSDS (excluding the providers listed above). Where possible NHS England has tried to recalculate rates or proportions using the imputed value rather than estimating a new rate or proportion.

This methodology allows for the calculation of national totals which, for the most part, are in line with the actual published metrics between August 2021 and July 2022. Extreme caution should be used when interpreting these statistics however, and the following should be considered:

Data presented are estimates based on providers submitting data to MHSDS who are not impacted by the cyber incident. The trends and activity reported by these providers is for the most part reflective of the providers impacted by the cyber incident but given the lack of data, this is currently an assumption.

For volatile metrics (such as MHS24, the count of children on adult wards) or metrics which include smaller numbers, the accuracy of the estimates is reduced. Some of the estimates are as much as 6% different when compared with the actual published metric values for Performance July 2022 and prior months. For measures which are relatively stable (for example the 12 month rolling access metrics), the estimates are generally within 1-2% of the national total.

Counts are also presented with both the minimum and maximum factors which were calculated from the data. This data is included to help users understand the possible range of values the imputed values could cover.

Last edited: 10 July 2023 4:07 pm