CEC-UW EHR Data Elements

Patient-level data - 40 elements

CEC-UW uses data pulled via secure encryption from the electronic health records of approximately 370,000 patients at 21 participating health systems. This includes 70,000 inpatients. This project has four data element categories, with 195 individual data elements:

Patient-Level Data 

  • Healthcare System Organization ID
  • Patient ID
  • Sex
  • Age
  • Height
  • Weight
  • Multiracial
  • First Race
  • Second Race
  • Ethnicity
  • Insurance Status at Patient Index Day
  • Highest Level of Education
  • Housing Status
  • Blood Type
  • Blood Type Rh factor
  • Chronic Lung Disease – Asthma
  • Chronic Lung Disease – COPD
  • Chronic Lung Disease – Bronchiectasis
  • Diabetes Mellitus
  • Cardiovascular Disease
  • Chronic Renal Disease
  • On Dialysis
  • Immunocompromised Condition
  • If Female, Currently Pregnant
  • Cancer
  • Hypertension
  • Depression
  • Anxiety
  • Alcohol Abuse
  • Pro-Clotting Disorders
  • Anti-Clotting Disorders

Encounter-level data - 54 elementsEncounter-Level Data

  • COVID-19 diagnosis
  • Treatment site
  • Intensive care unit admission (include all variations of intensive care)
  • Required supplemental oxygen
  • Intubated for ventilator use
  • Pneumonia
  • Septic shock
  • Number of days hospitalized
  • Mortality
  • Smoking Status
  • For former smokers, years since quitting
  • Packs Smoked Per Day
  • Pack years
  • Smokeless Tobacco Use
  • Type of tobacco
  • Marijuana Use
  • Passive smoke exposure
  • Chronic Lung Disease – Asthma
  • Chronic Lung Disease – COPD
  • Chronic Lung Disease – Bronchiectasis
  • Diabetes Mellitus
  • Cardiovascular Disease
  • Chronic Renal Disease
  • On Dialysis
  • Immunocompromised Condition
  • If Female, Currently Pregnant
  • Cancer
  • Hypertension
  • Depression
  • Anxiety
  • Alcohol Abuse
  • Pro-Clotting Disorders
  • Anti-Clotting Disorders
  • Radiographics

*These categories have multiple lines of data per patient, i.e., each patient may have more than one encounter, multiple medications, and multiple lab tests.

Meds data - 76 elementsMedications

Use of medications by category:

  • Smoking cessation medications
  • Blood thinners
  • Steroids
  • ACE inhibitors
  • ARBs
  • Short-acting adrenergic bronchodilators
  • COVID medications
  • Long-acting adrenergic bronchodilators
  • Anticholinergic bronchodilators
  • Bronchodilators combos
  • Inhaled corticosteroids (includes combo medications)

* Medication data included a one year “look back” and any medication use during encounters beginning at the COVID diagnosis.

Lab data - 25 elementsLabs

The lab data are varied and include:

  • COVID PCR and antibody tests
  • CBC
  • Chemistry (e.g., potassium, BUN, creatinine, glucose)
  • Liver function tests
  • Coagulation (INR, D-dimer)
  • Inflammatory markers (e.g., ESR, IL-6, C-reactive protein)
  • Troponin
  • Hemoglobin A1C
  • Tests for various infections
  • Blood type

* Lab Data include all labs beginning at the COVID diagnosis (one exception was hemoglobin A1C and blood sugar that  included a three year look back as a marker for diabetes).

CEC-UW Essentials

370,000 COVID patients

21 health systems

Harmonized EHR Data