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Publication, Part of

Routine Quarterly Mental Health Minimum Data Set (MHMDS) Reports - Final Q3 and Provisional Q4 2011-2012, Summary statistics and related information

Other reports and statistics
Publication Date:
Geographic Coverage:
Wales, England
Geographical Granularity:
Country, Mental Health Trusts, Strategic Health Authorities, Primary Care Trusts, Independent Sector Health Care Providers, Primary Care Organisations, Clinical Commissioning Groups
Date Range:
01 Oct 2011 to 31 Mar 2012


Mental Health Minimum Data Set (MHMDS) is a regular return of data from providers of NHS funded adult secondary mental health services, produced during in the course of delivering services to patients. Providers currently submit data every quarter. From Quarter 1 2011/12, a new version of MHMDS (version 4) includes new data items and is processed using a new system. Some of the changes have been introduced to support the implementation of of Payment by Results for mental health.


Note:  Incomplete reference data was used in the production of the data quality measure (DQM9) for NHS Occupation Code, which means that the published measure for Q1, Q2 and Q3 final quarterly data, for this measure, are unreliable.  The reference data has been updated for the Q4 reports.

Key Facts

In MHMDS Q3 final (October to December) and Q4 provisional (January to March) data 2011/12.

  • The data quality measures showed that in Q3:

- Over 97 per cent of records had valid coding for NHS number, postcode, birth date and gender;

- 93 per cent of primary diagnosis records had valid codes;

- 95 per cent of records had a valid Payment by Results cluster code.

  • The Q3 data show that of 811,309 people eligible for a Payment by Results cluster and in contact with services at the end of the quarter (31 December 2011), 467,048 had been assigned to a valid cluster (57.6 per cent).
  • Data quality assessments are being carried out in conjunction with suppliers and are on-going. It is important to treat all statistics with caution especially when comparing historical data and to refer to the background data quality statement which accompanies this release and provides further details about coverage, issues and changes relating to the move to version 4 MHMDS.

In Community MHA Q3 final (October to December) and Q4 provisional (January to March) data 2011/12:

  • The number of home treatment episodes year to date was 95,023;
  • The number of assessments by crisis resolution teams year to date was 189,860;
  • The number of patients receiving home treatment year to date was 78,053;
  • The number of patients being treated by early intervention teams was 21,944;
  • The number of people receiving assertive outreach services in was 19,970.


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Last edited: 11 April 2018 5:18 pm