1. Overview

    Phenotype Type
    Disease or syndrome
    Sex
    Both
    Valid Event Date Range
    No data
    Coding System
    Read codes v2
    Data Sources
    Welsh Longitudinal General Practice Dataset (WLGP) - Welsh Primary Care
    Collections
    No data
    Tags
    No data
    Ontology
    No data

  2. Definition

    This phenotype is intended to capture either sleep apnoea or obesity hypoventilation syndrome recorded in primary care.

    This is a primary-care-data only phenotype designed for analysis of recorded prevalent disease in the general practice population. Additional cases may be identified using other data sources, including secondary care data. In addition, it only includes coded diagnosis or treatment, not automated definitions based on records of screening tool scores.

    This is based on PH309, 618, with additional codes for CPAP and obesity hypoventilation syndrome.

    Codes have been standardised to 5 character format (not including the possible additional 2 characters of the term code, but with padding to 5 digits using “.” where stems appear). Please note that codes including “.” may be corrupted if opened using software that attempts to coerce them to numeric (such as Excel).

  3. Implementation

    Implementation

    Any appearance of these codes can be identified in Read-coded primary care data (such as WLGP) to identify the phenotype. Note that this is a primary-care-data only phenotype designed for analysis of recorded prevalent disease in the general practice population. It therefore relies on cases being recorded in primary care data. Additional cases may be identified using other sources, including secondary care data.

  4. Clinical Codelist

  5. Publication

    Related publications

    No known publications

    Citation Requirements

    Please cite this phenotype definition.

  6. API

    To Export Phenotype Details:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH4700/version/9993/detail/?format=json
    R Package

    # Download here

    library(ConceptLibraryClient)


    # Connect to API

    client = ConceptLibraryClient::Connection$new(public=TRUE)


    # Get details of Phenotype

    phenotype_details = client$phenotypes$get_detail(
     'PH4700',
     version_id=9993
    )

    Py Package

    # Download here

    from pyconceptlibraryclient import Client


    # Connect to API

    client = Client(public=True)


    # Get details of Phenotype

    phenotype_detail = client.phenotypes.get_detail(
     'PH4700',
     version_id=9993
    )

    To Export Phenotype Code List:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH4700/version/9993/export/codes/?format=json
    R Package

    # Download here

    library(ConceptLibraryClient)


    # Connect to API

    client = ConceptLibraryClient::Connection$new(public=TRUE)


    # Get codelist of Phenotype

    phenotype_codelist = client$phenotypes$get_codelist(
     'PH4700',
     version_id=9993
    )

    Py Package

    # Download here

    from pyconceptlibraryclient import Client


    # Connect to API

    client = Client(public=True)


    # Get codelist of Phenotype

    phenotype_codelist = client.phenotypes.get_codelist(
     'PH4700',
     version_id=9993
    )

  7. Version History

    Version IDNameOwnerPublish date
    Sleep apnoea or obesity hypoventilation syndrome (primary care) walmslro2026-10-07 17:16