Data dictionary: Breast Cancer - NBCA

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This is a summary of the variables available in the database. You can download the complete data dictionary. Click here to learn more.

Table 1: Patient Information.

Variables
Health Facility
Unique Patient Number
Date of Birth
Gender
Date of Death (if applicable)
Cause of Death

Table 2: Treatment Details.

Variables
Episode Start Date (Incidence Date)
Has the patient participated in a registered trial?
Has the patient received neo-adjuvant therapy (min. 4 weeks before surgery)?
Start Date of Neo-adjuvant Therapy
End Date of Neo-adjuvant Therapy
Number of Neo-adjuvant Cycles Actually Given
Neo-adjuvant Chemotherapy
Adjuvant Chemotherapy Actually Received by the Patient
Start Date of Adjuvant Chemotherapy
End Date of Adjuvant Chemotherapy
Number of Adjuvant Cycles Actually Given
Adjuvant Immunotherapy Received by the Patient
Complicated Course After Chemotherapy

Table 3: Diagnosis and Pathology.

Variables
Lateralization of this Tumor
Is there a history? It concerns the history of (one of) the breast(s).
Was the tumor discovered during population screening (screening)?
Is the tumor palpable?
Final BIRADS classification after imaging (before biopsy)
Incidence Date (date of first tumor-positive biopsy based on cytology or histology)
Invasiveness
Histological Type
Estrogen Receptor %
Progesterone Receptor %
HER-2 Determination

Table 4: Surgical and Oncological Treatment.

Variables
Date of First Tumor Excision
Type of Breast Operation at First Tumor Excision
Was the Plastic Surgeon Involved in the Surgery?
Sentinel Lymph Node Biopsy Done?
Date of Sentinel Lymph Node Biopsy
Result of Sentinel Lymph Node Biopsy
Was there an Axillary Lymph Node Dissection?
Date of Axillary Lymph Node Dissection

Table 5: Radiation and Postoperative Details.

Variables
Radiotherapy
Type of Radiotherapy Received by the Patient
Radiotherapy Institute Where the Radiotherapy Was Given
Start Date of Radiotherapy
End Date of Radiotherapy
Was the Patient Discussed in a Multidisciplinary Team Post-Operation?

Table 1: COVID-19 Specific.

Variables
Was there a (clinical) suspicion or a test for SARS-CoV-2 infection in the period before admission to 30 days after admission?
Date of First Suspicion of SARS-CoV-2 Infection
Date of First Specific Test for SARS-CoV-2 Infection
Date of First Positive Lab Test for SARS-CoV-2
ICU Admission Date and Time
ICU Discharge Date and Time
Discharge Destination after ICU Stay
Final Status Regarding SARS-CoV-2