<p dir="ltr">These data are modelled using the OMOP Common Data Model v5.3.</p><h3><u>Correlated Data Source</u></h3><ol><li>NG tube vocabularies</li></ol><h3><u>Generation Rules</u></h3><ul><li>The patient’s age should be between 18 and 100 at the moment of the visit.</li><li>Ethnicity data is using 2021 census data in England and Wales (<a href="https://www.ons.gov.uk/peoplepopulationandcommunity/culturalidentity/ethnicity/bulletins/ethnicgroupenglandandwales/census2021" target="_blank">Census in England and Wales 2021</a>) .</li><li>Gender is equally distributed between Male and Female (50% each).</li><li>Every person in the record has a link in procedure_occurrence with the concept “Checking the position of nasogastric tube using X-ray”</li><li>2% of person records have a link in procedure_occurrence with the concept of “Plain chest X-ray”</li><li>60% of visit_occurrence has visit concept “Inpatient Visit”, while 40% have “Emergency Room Visit”</li></ul><h3><u>Notes</u></h3><ul><li>Version 0</li><li>Generated by man-made rule/story generator</li><li>Structural correct, all tables linked with the relationship</li><li>We used national ethnicity data to generate a realistic distribution (see below)</li></ul><h3>2011 Race Census figure in England and Wales</h3><p dir="ltr">Ethnic Group : Population(%)</p><ul><li>Asian or Asian British: Bangladeshi - 1.1</li><li>Asian or Asian British: Chinese - 0.7</li><li>Asian or Asian British: Indian - 3.1</li><li>Asian or Asian British: Pakistani - 2.7</li><li>Asian or Asian British: any other Asian background -1.6</li><li>Black or African or Caribbean or Black British: African - 2.5</li><li>Black or African or Caribbean or Black British: Caribbean - 1</li><li>Black or African or Caribbean or Black British: other Black or African or Caribbean background - 0.5</li><li>Mixed multiple ethnic groups: White and Asian - 0.8</li><li>Mixed multiple ethnic groups: White and Black African - 0.4</li><li>Mixed multiple ethnic groups: White and Black Caribbean - 0.9</li><li>Mixed multiple ethnic groups: any other Mixed or multiple ethnic background - 0.8</li><li>White: English or Welsh or Scottish or Northern Irish or British - 74.4</li><li>White: Irish - 0.9</li><li>White: Gypsy or Irish Traveller - 0.1</li><li>White: any other White background - 6.4</li><li>Other ethnic group: any other ethnic group - 1.6</li><li>Other ethnic group: Arab - 0.6</li></ul><p></p>