Change Request

NHS Connecting for Health

NHS Data Model and Dictionary Service

Reference: Change Request 1208
Version No:1.0
Subject:Patient Health Questionnaire
Effective Date:Immediate
Reason for Change:Change to Data Standards
Publication Date:2 November 2010


The NHS Data Model and Dictionary Service are currently working with the Department of Health and The NHS Information Centre for Health and Social Care to develop a number of Data Sets.

During the business analysis stage, it has been identified that these Data Sets cover a number of common areas which are either not currently in the NHS Data Model and Dictionary or amendments are required to make the current information suitable for use in these Data Sets.

This Change Request adds "Patient Health Questionnaire" to support these new data sets.

Summary of changes:

Supporting Information
Attribute Definitions
ASSESSMENT TOOL TYPE   Changed Description

Date:2 November 2010
Sponsor:Nicholas Oughtibridge , Acting Director - Data Standards and Products, Technology Office, Department of Health Informatics Directorate

Note: New text is shown with a blue background. Deleted text is crossed out. Retired text is shown in grey. Within the Diagrams deleted classes and relationships are red, changed items are blue and new items are green.

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Change to Supporting Information: New Supporting Information

This item is being used for development purposes and has not yet been assured by the Information Standards Board for Health and Social Care. 

The Patient Health Questionnaire (PHQ9) is a type of ASSESSMENT TOOL.

The Patient Health Questionnaire is designed to facilitate the recognition and diagnosis of depression in PATIENTS.

For PATIENTS with a depressive disorder, a Patient Health Questionnaire can be calculated and repeated over time to monitor change.

The responses for each of the 9 items are as follows:

  • 0 - Not at all
  • 1 - Several days
  • 2 - More than half the days
  • 3 - Nearly every day

The score ranges are:

0 - 4None
5 - 9Mild
10 - 14Moderate
15 - 19Moderately Severe
20 - 27Severe

If one or two values are missing from the score, then they can be substituted with the average score of the non-missing items. Questionnaires with more than two missing values should be disregarded.

The recommended cut off score for the Patient Health Questionnaire is 9, so a PERSON scoring 10 or above will be considered to be suffering from clinically significant symptoms of depression.

Further details about the Patient Health Questionnaire (PHQ9) are available from the PHQ screeners website. 

This supporting information is also known by these names:
pluralPatient Health Questionnaires



Change to Attribute: Changed Description

This item is being used for development purposes and has not yet been assured by the Information Standards Board for Health and Social Care. 


National Codes:

001Health of the Nation Outcome Scale (Working Age Adults)
002Health of the Nation Outcome Scale (Children and Adolescents)
003Patient Health Questionnaire


For enquiries about this Change Request, please email