Table 1 Number of distinct values per variable overall, for only breast, only colorectal, and only prostate tumor records. Each tumor record contains 16 categorical variables describing the disease, the patient, and the diagnostic procedure. The variables are sorted by the decreasing number of distinct values overall
Variable | Explanation | Example | Number of distinct values | |||
|---|---|---|---|---|---|---|
Overall | Breast | Colorectal | Prostate | |||
ICD-O morphology | Cell type and behavior of tumor | 8140/3 | 127 | 91 | 57 | 33 |
TNM T | Spread of tumor | 4 | 74 | 59 | 33 | 28 |
TNM N | Spread of lymph node metastases | 3 | 51 | 42 | 25 | 8 |
ICD-10 code | Classification of disease | C50.9 | 30 | 13 | 15 | 2 |
ICD-O topography | Location of tumor | C50.9 | 23 | 9 | 12 | 2 |
TNM M | Presence of remote metastases | 1 | 18 | 9 | 15 | 13 |
Metastasis | Location of remote metastases | PUL | 12 | 11 | 11 | 10 |
Grading | Amount of abnormality of tumor | 2 | 11 | 11 | 10 | 11 |
Diagnosis assurance | Diagnostic method | 6 | 7 | 7 | 6 | 7 |
Lateral localization | Side location of tumor | L | 6 | 5 | 6 | 6 |
c/p-prefix N | Diagnostic method for TNM N | C | 5 | 5 | 3 | 3 |
Diagnosis age (binned) | Age at diagnosis | [59,65) | 5 | 5 | 5 | 5 |
Age at death (binned) | Age at death (if patient has died) | [66,70) | 5 | 5 | 5 | 5 |
Sex | Sex of patient | W | 3 | 3 | 3 | 3 |
c/p-prefix T | Diagnostic method for TNM T | C | 3 | 3 | 3 | 3 |
c/p-prefix M | Diagnostic method for TNM M | C | 3 | 3 | 3 | 3 |