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Basic Data Structure and Terms1
| 2nd Tumor | |||
|---|---|---|---|
| Sub-Type A | Sub-Type B | ||
| 1st Tumor | Sub-Type A | FAA | FAB |
| Sub-Type B | FBA | FBB | |
The entries in the table, FAA, FAB, FBA and FBB, represent the frequencies of patients’ tumors cross-classified by tumor sub-type among a total sample of N patients.
