Methodological changes

Summary

This page informs you of changes to the methodology used in our publications.

Audits and performance

Ambulance services

Methodological changes Publication

Ambulance Services, England, 2010-11

Published: 23 June 2011

Ambulance Services, England, 2010-11

Ambulance Services, England, 2011-12

Published: 20 June 2012

Ambulance Services, England, 2011-12

 

Data on written complaints

Methodological changes

Publication

Data on written complaints in the NHS, 2011-12

Published: 29 August 2012

Data on written complaints in the NHS, 2011-12

 

National diabetes audit

Methodological changes

Publication

National Diabetes Audit: Report Care Processes and Treatment Targets

Published: 2 October 2014

National Diabetes Audit - 2012-2013: Report 1, Care Processes and Treatment Targets

National Diabetes Audit: Complications

Published: 29 January 2015

 

 

NHS Safety Thermometer

Methodological changes

Publication

NHS ST classification as management information

Published: 17 March 2017

NHS Safety Thermometer Report

 

Health and lifestyles

Health Survey for England 

Methodological changes Publication

Health Survey for England: Trend tables - 2010

Published: 15 December 2011

Health Survey for England - 2010, Trend tables

Health Survey for England: Respiratory health - 2010

Published: 15 December 2011

Health Survey for England - 2010, Respiratory health

Health Survey for England: Trend Tables - 2011

Published: 20 December 2012

Health Survey for England - 2011, Trend tables

Health Survey for England 2013

Published:18 December 2013

Health Survey for England - 2012

 

NHS contraceptive services

Methodological changes Publication

NHS Contraceptive Services, England, 2010-11

Published: 1 December 2011

NHS Contraceptive Services - England, 2010-11, Community contraceptive clinics

Sexual and Reproductive Health Services, England, 2014-15

Published (as Sexual and Reproductive Health Services, England): 14 October 2015

Sexual and Reproductive Health Services, England - 2014-15

 

NHS immunisation statistics

Methodological changes Publication

NHS Immunisation Statistics, England, 2010-2011

Published: 28 September 2011

NHS Immunisation Statistics - England, 2010-11

NHS Immunisation Statistics, England, 2012-2013

Published: 26 September 2013

NHS Immunisation Statistics, England - 2012-13

NHS Immunisation Statistics, England, 2013-14

Published: 25 September 2014

NHS Immunisation Statistics, England - 2013-14

Statistics on alcohol

Methodological changes Publication

Statistics on alcohol, England, 2012

Published: 31 May 2012


Statistics on Alcohol: England, 2012

Statistics on alcohol, England, 2014

Published: 29 May 2014

 

Statistics on alcohol, England - 2016

Published: 30 June 2016

Statistics on Alcohol, England, 2016

 

Statistics on drug misuse

Methodological changes

Publication

Statistics on Drug Misuse, England, 2016

Published: 27 July 2016


Statistics on Drugs Misuse: England, 2016

 

Statistics on NHS stop smoking services

Methodological changes

Publication

Statistics on NHS Stop Smoking Services in England April 2014 - June 2014

Published: 29 October 2014

Statistics on NHS Stop Smoking Services in England - April 2014 to June 2014

 

Statistics on smoking

Methodological changes

Publication

Statistics on Smoking: England, 2011

Published: 16 August 2011

Statistics on Smoking - England, 2011

Statistics on Smoking: England, 2014

Published: 8 October 2014
 

Statistics on Smoking, England - 2014

Statistics on Smoking

Published: 18 June 2018

Statistics on Smoking, England, 2018

 

Statistics on women's smoking status at time of delivery

Methodological changes Publication

Statistics on Women's Smoking Status at Time of Delivery, England

Published: 13 November 2013

 

Statistics on Women's Smoking Status at Time of Delivery, England

Published: 07 September 2017

Statistics on Women's Smoking Status at Time of Delivery, England - Quarter 1, 2017-18

 

Statistics on smoking, drinking and drug use among young people

Methodological changes

Publication

Smoking, drinking and drug use among young people in England, 2010

Published: 28 July 2011

Smoking, Drinking and Drug Use Among Young People in England - 2010

Smoking, Drinking and Drug Use among Young People in England,  2011

Published: 26 July 2012

Smoking, Drinking and Drug Use Among Young People in England - 2011

 

Statistics on obesity, physical activity and diet, England

Methodological changes

Publication

Statistics on Obesity, Physical Activity and Diet, England, 2014

Published: 26 February 2014

Statistics on Obesity, Physical Activity and Diet - England, 2014

Statistics on Obesity, Physical Activity and Diet, England, 2017

Published: 30 March 2017

Statistics on Obesity, Physical Activity and Diet - England, 2017

 

Hospital care

Provisional Accident and Emergency Quality Indicators - England, by provider and Provisional Monthly Hospital Episode Statistics for Admitted Patient Care, Outpatients and Accident and Emergency data

Methodological changes Publication

Methodological Changes, 2017

Published: 14 December 2017

Hospital Episode Statistics

 

Provisional Monthly Hospital Episode Statistics for Admitted Patient Care, Outpatients and Accident and Emergency Data

Methodological changes Publication

Methodological Changes: Provisional Monthly Hospital Episode Statistics for Admitted Patient Care, Outpatients and Accident and Emergency Data

Published: 31 July 2014

Hospital Episode Statistics

Methodological Changes: Provisional Monthly Hospital Episode Statistics for Admitted Patient Care, Outpatients and Accident and Emergency Data

Published: 23 March 2016

Hospital Episode Statistics

 

Patient Reported Outcome Measures (PROMs)

Methodological changes Publication

Patient Reported Outcome Measures (PROMs) in England: Experimental Statistics

Published: 17 August 2011

Finalised Patient Reported Outcome Measures (PROMs) in England - April 2009 to March 2010, Pre- and post-operative data, Experimental statistics

Provisional Monthly Patient Reported Outcome Measures (PROMs) in England

Published: 10 May 2012

Patient Reported Outcome Measures (PROMs)

Provisional Monthly Patient Reported Outcome Measures (PROMs) in England

Published: 11 December 2012

Provisional Monthly Patient Reported Outcome Measures (PROMs) in England - April 2011 to March 2012, Pre- and post-operative data, December 2012 release

Finalised Patient Reported Outcome Measures (PROMs) in England

Published: 14 August 2013

Provisional Monthly Patient Reported Outcome Measures (PROMs) in England - April 2011 to March 2012, Pre- and post-operative data, December 2012 release

Finalised Patient Reported Outcome Measures (PROMs) in England and Provisional Monthly Patient Reported Outcome Measures (PROMs) in England

Published 15 October 2013

Finalised Patient Reported Outcome Measures (PROMs) in England - April 2011 to March 2012

Patient Reported Outcome Measures (PROMs) in England: Experimental Statistics 

Published: 12 November 2015

Provisional Monthly Patient Reported Outcome Measures (PROMs) in England - April 2015 to June 2015

Indicators

Clinical Commissioning Group (CCG) Indicators

Methodological changes Publication

CCG Outcomes Indicator Set - emergency admissions

Published: 27 March 2013

CCG Outcomes Indicator Set - March 2013

CCG Outcomes Indicator Set - potential years of life lost

Published: 25 June 2015

CCG Outcomes Indicator Set - June 2015

CCG Outcomes Indicator Set - mortality from breast cancer in females

Published: 22 September 2015

CCG Outcomes Indicator Set - September 2015

 

Compendium of population health indicators

Methodological changes  Publication

Hospital Episode Statistics: deaths within 30 days of a hospital procedure or of an emergency admission to hospital

Published: 19 August 2015

 

 

NHS Outcomes Framework

Methodological changes Publication

NHS Outcomes Framework indicators - June 2012 release

Published: 28 June 2012

NHS Outcomes Framework Indicators - June 2012 Release

NHS Outcomes Framework - Cancer Survival

Published: 27 March 2013

NHS Outcomes Framework Indicators - March 2013 Release

NHS Outcomes Framework - Emergency Admissions 

Published: 27 March 2013

NHS Outcomes Framework Indicators - March 2013 Release

NHS Outcomes Framework indicators - December 2013 release

Published: 05 December 2013

 

NHS Outcomes Framework indicators publication - May 2014

Published: 22 May 2014

 

 

Accident and Emergency

Methodological changes Publication

Provisional Accident & Emergency Quality Indicators for England. Experimental Statistics by provider for March 2012

Published: 27 July 2012

Provisional Accident and Emergency Quality Indicators - England, Experimental statistics by provider for March 2012

Provisional Accident and Emergency Quality Indicators for England - July 2017

Published: 17 August 2017

Provisional Accident and Emergency Quality Indicators - England, by provider for July 2017

 

Seven-day services

Methodological changes Publication

Seven-day Services

Published: 29 January 2016

Seven-day Services - England, Provisional, July 2014 - June 2015, Experimental statistics

Seven-day Services

Published: 26 October 2016

Seven-day Services - England, April 2015 - March 2016, Experimental statistics

Seven-day Services

Published: 18 June 2018

Seven Day Servcies

 

Summary Hospital-Level Mortality Indicator (SHMI)

Methodological changes Publication

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, April 2010 - March 2011

Published: 27 October 2011

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, April 2010 - March 2011, Experimental statistics

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, July 2010 - June 2011, Experimental Statistics

Published: 25 January 2012

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, July 2010 - June 2011, Experimental statistics

Summary Hospitality-level mortality indicator (SHMI) - Deaths associated with hospitalisation, England, October 2010 - September 2011, Experimental Statistics

Published: 24 April 2012

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, October 2010 - September 2011, Experimental statistics

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, January 2011 - December 2011, Experimental Statistics

Published: 25 July 2012

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, January 2011 - December 2011, Experimental statistics

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, April 2011 - March 2012, Experimental Statistics, Methodological Change

Published: 23 October 2012

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, April 2011 - March 2012, Experimental statistics

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, July 2011 - June 2012, Experimental Statistics, Methodological Change

Published: 24 January 2013

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, July 2011 - June 2012, Experimental statistics

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, October 2012 - September 2013, Experimental Statistics

Published: 30 April 2014

 

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, April 2013 - March 2014

Published: 23 October 2014

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, April 2013 - March 2014

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, January 2014 - December 2014 

Published: 29 July 2015

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, January 2014 - December 2014

 

Mental health

Improving Access to Psychological Therapies (IAPT)

Methodological changes Publication

Improving Access to Psychological Therapies, Key Performance Indicators (IAPT KPIs) 

Published: 11 September 2012

Improving Access to Psychological Therapies, Key Performance Indicators (IAPT KPIs) - Q4 2011-12 final and Q1 2012-13 provisional

Improving Access to Psychological Therapies (IAPT) Reports 2014 

Published: 21 November 2014

Monthly Improving Access to Psychological Therapies Data Quality Reports - Final July, final August and provisional September 2014

Improving Access to Psychological Therapies (IAPT) Reports 2015

Published: 21 April 2015

Improving Access to Psychological Therapies Report, January 2015 Final

Improving Access to Psychological Therapies (IAPT) Monthly Reports 2016

Published: 26 July 2016

Improving Access to Psychological Therapies Report, April 2016 Final, May 2016 Primary + Quarter 4 2015/16

Improving Access to Psychological Therapies (IAPT) Monthly Reports 2017

Published: 25 April 2017

Improving Access to Psychological Therapies Report, January 2017 Final, February 2017 Primary + Quarter 3 2016/17

Improving Access to Psychological Therapies (IAPT) Monthly and Annual Reports 2018

Published: 18 June 2018

Improving Access to Psychological Therapies (IAPT) monthly and annual reports

 

Mental Health Act

Methodological changes

Publication

Inpatients formally detained in hospitals under the Mental Health Act 1983 and patients subject to Supervised Community Treatment - Annual Figures, England 2011/12 

Published: 24 October 2012

Inpatients Formally Detained in Hospitals Under the Mental Health Act 1983 and Patients Subject to Supervised Community Treatment - England, 2011-2012, Annual figures

Mental Health Act Statistics, Annual Figures 2016-17, Experimental statistics Methodological Change Notice

Published 10 October 2017

Mental Health Act Statistics, Annual Figures: 2016-17, Experimental statistics

 

Mental Health Minimum Dataset

Methodological changes

Publication

Mental Health Bulletin: Annual report from MHMDS returns - England 2011/12, initial national figures

Published: 19 February 2013

Mental Health Bulletin: Annual report from MHMDS returns - England, 2011-12, further analysis and organisation-level data

Routine Quarterly Mental Health Minimum Dataset Reports - Provisional Q1 2011/12 summary statistics and related information

Published: 16 December 2011

Routine Quarterly Mental Health Minimum Data Set (MHMDS) Reports - Provisional Q1 2011-2012, Summary statistics and related information

Monthly Mental Health Minimum Dataset (MHMDS) Reports

Published: 03 September 2013

 

Monthly MHMDS Reports 2014-15

Published: 17 June 2014

Mental Health and Learning Disabilities Statistics

 

Mental Health and Learning Disabilities Statistics

Methodological changes

Publication

Monthly MHLDS Reports

Published: 20 January 2016

Mental Health and Learning Disabilities Statistics Monthly Report: Final October and Provisional November

 

Patient environment

Patient Led Assessments of the Care Environment - PLACE, England 2014

Methodological changes

Publication

Patient Led Assessments of the Care Environment - PLACE, England 2014

Published: 27 August 2014

Patient-Led Assessments of the Care Environment (PLACE), England 2014

 

Prescribing

Methodological changes Publication

Prescriptions dispensed in the community

Published: 30 July 2013

Prescriptions Dispensed in the Community, Statistics for England - 2002-2012

CCG Prescribing Data

Published: 04 September 2013

 

Use of NICE-appraised Medicines in the NHS in England - 2016

NICE Technology Appraisals in the NHS in England, Innovation Scorecard - to June 2015, Experimental statistics

Use of NICE-appraised Medicines in the NHS in England - 2012, Experimental Statistics

Published: 21 January 2014

 

NICE Technology Appraisals in the NHS in England (Innovation Scorecard)

Published: 05 March 2014

 

NICE Technology Appraisals in the NHS in England (Innovation Scorecard) 

Published: 25 September 2014

NICE Technology Appraisals in the NHS in England, Innovation Scorecard - to March 2014, Experimental statistics

NICE Technology Appraisals in the NHS in England (Innovation Scorecard), January 2015

Published: 20 January 2015

NICE Technology Appraisals in the NHS in England, Innovation Scorecard - to June 2014, Experimental statistics

NICE Technology Appraisals in the NHS in England (Innovation Scorecard) Methodological Change

Published: 19 May 2015

NICE Technology Appraisals in the NHS in England, Innovation Scorecard - to September 2014, Experimental statistics

NICE Technology Appraisals in the NHS in England (Innovation Scorecard) Oct 2015

Published: 1 October 2015

NICE Technology Appraisals in the NHS in England, Innovation Scorecard - to March 2015, Experimental statistics

NICE Technology Appraisals in the NHS in England (Innovation Scorecard) Oct 2016

Published: 12 October 2016

NICE Technology Appraisals in the NHS in England (Innovation Scorecard): to March 2016

 

Primary care

Screening

Breast Screening Programme

Methodological changes

Publication

Breast Screening Programme, England, Statistics for 2012-13

Published: 27 February 2014

Cervical Screening Programme - England, 2010-2011

 

Cervical Screening Programme

Methodological changes

Publication

Cervical screening programme, England, 2010-11

Published: 24 November 2011

 

Cervical screening programme, England, 2012-13

Published: 24 October 2013

Cervical Screening Programme, England - 2012-2013

Cervical screening programme, England, 2013-14 

Published: 25 November 2014

Cervical Screening Programme, England - 2012-2013

 

Social care

Adult Social Care Survey

Methodological changes Publication

Adult Social Care Survey, England 2011-12 Provisional Release

Published: 12 September 2012

Personal Social Services Adult Social Care Survey - England, 2011-2012, Provisional

Personal Social Services Adult Social Care Survey, England, 2014-15

Personal Social Services Adult Social Care Survey, England - 2014-15

 

Community Care Statistics

Methodological changes Publication

Community Care Statistics: Social Services Activity, England - 2009-10 (further release)

Published: 20 April 2011

Community Care Statistics, Social Services Activity, England - 2009-10, Further release

Community Care Statistics: Social Services Activity, England 2011-12, Provisional Release

Published: 12 September 2012

Community Care Statistics, Social Services Activity, England - 2011-12, Provisional release

Community Care Statistics: Social Services Activity, England 2014-15

Published: 6 October 2015

Community Care Statistics, Social Services Activity, England - 2014-15

 

National Indicator Set

Methodological changes Publication

Social Care and Mental Health Indicators from the National Indicator Set: 2010-11 Provisional 

Published: 21 October 2011 (provisional) and 28 March 2012 (final)

Social Care and Mental Health Indicators from the National Indicator Set - 2010-11, Final release

 

Personal Social Services

Methodological changes Publication

Personal Social Services: Expenditure and Unit Costs, England - 2010-11 Provisional Release

Published: 30 November 2011

Personal Social Services expenditure and unit costs - England, 2010-2011, Provisional release

Personal Social Services: Staff of Social Services Departments, England - At 30 September 2010

Published: 31 March 2011

Personal Social Services: Staff of Social Services Departments at 30 September - England, 2010

Personal Social Services: Staff of Social Services Departments, England - as at September 2011

Published: 29 March 2012

Personal Social Services: Staff of Social Services Departments at 30 September - England, 2011

Personal Social Services Survey of Adult Carers in England, 2014 -15

Published: 16 September 2015

Personal Social Services Survey of Adult Carers in England, 2014-15

Personal Social Services: Expenditure and Unit Costs, England 2014/15 onwards

Published: 16 September 2015

Personal Social Services: Expenditure and Unit Costs, England - 2014-15, Provisional release

 

Registered Blind and Partially Sighted People

Methodological changes Publication

Registered Blind and Partially Sighted People - Year ending 31 March 2011

Published: 1 September 2011

Registered Blind and Partially Sighted People - England, Year ending 31 March 2011

 

 

Workforce

Dental Earnings and Expenses

Methodological changes Publication

Dental Earnings and Expenses - England and Wales, 2009/10

Published: 5 October 2011

Dental Earnings and Expenses, England and Wales - 2009-10

Dental Earnings and Expenses - Northern Ireland, 2009/10

Published: 19 October 2011

Dental Earnings and Expenses, Northern Ireland - 2009-10

Dental Earnings and Expenses - Scotland, 2009/10

Published: 25 October 2011

Dental Earnings and Expenses, Scotland - 2009-10, Experimental statistics

Dental Earnings and Expenses - England and Wales, 2010/11 

Published: 22 August 2012

Dental Earnings and Expenses, England and Wales - 2010-11

Dental Earnings and Expenses - Northern Ireland, 2010/11

Published: 3 October 2012

Dental Earnings and Expenses, Northern Ireland - 2010-11

Dental Earnings and Expenses - Scotland, 2010/11

Published: 26 October 2012

Dental Working Hours, Scotland - 2010-11 and 2011-12, Experimental statistics

Dental Earnings and Expenses England and Wales, 2011/12

Published: 22 August 2013

 

 

Dental Working Hours

Methodological changes Publication

Dental Working Hours - England and Wales, 2010/11 and 2011/12

Published: 22 August 2012

Dental Working Hours, England and Wales - 2010-11 and 2011-12

Dental Working Hours - Northern Ireland, 2010/11 and 2011/12 

Published: 3 October 2012

Dental Working Hours, Northern Ireland - 2010-11 and 2011-12, Experimental statistics

Dental Working Hours - Scotland, 2010/11 and 2011/12

Published: 26 October 2012

Dental Working Hours, Scotland - 2010-11 and 2011-12, Experimental statistics

 

General Ophthalmic Services: Workforce Statistics for England and Wales

Methodological changes Publication

General Ophthalmic Services: Workforce Statistics for England and Wales 31 December 2014

Published: 24 March 2015

 

 

General and Personal Medical Services, England

Methodological changes Publication

General and Personal Medical Services, England September 2015

(Statistical change notice)

Published: 27 April 2016
Delayed from 30 March 2016 for technical reasons

General and Personal Medical Services, England 2005-2015, as at 30 September, Provisional Experimental statistics

General and Personal Medical Services, England September 2015 

(Methodological change notice)

Published: 27 April 2016
Delayed from 30 March 2016 for technical reasons

General and Personal Medical Services, England 2005-2015, as at 30 September, Provisional Experimental statistics

 

GP Earnings and Expenses

Methodological changes Publication

GP Earnings and Expenses - 2009/10

Published: 09 November 2011

GP Earnings and Expenses - 2009-10

GP Earnings and Expenses - 2010/11

Published: 26 September 2012

GP Earnings and Expenses - 2010-11

GP Earnings and Expenses 2011/12

Published: 25 September 2013

 

 

Investment in General Practice

Methodological changes Publication

Investment in General Practice, England, Wales, Northern Ireland and Scotland 2008/09 to 2012/13

Published: 25 September 2013

 

 

NHS Workforce Statistics

Methodological changes Publication

Sources for Workforce Publications 

NHS Workforce Statistics

Published: 30 March 2015

 

Workforce Statistics publication - Sep 2015 (experimental)

Workforce Statistics publication - Dec 2015 (provisional)

Healthcare Workforce Statistics publication - Sep 15 (experimental)

Please note that publication of the General and Personal Medical Services statistics has been delayed due to technical reasons. A new release date will be announced shortly.