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| New covariate | Variable name | Covariate values | Covariate description |
|---|---|---|---|
| MBC vs non-MBC | der_metastatic | 0=No; 1=Yes; 99=Unknown | Metastatic cancer status (only applicable to solid tumors/lymphoma) |
| MBC site of metastasis | der_met_bone | 0=No; 1=Yes; 99=Unknown | Metastatic to bone |
| MBC site of metastasis | der_met_liver | 0=No; 1=Yes; 99=Unknown | Metastatic to liver |
| MBC site of metastasis | der_met_lung_v2 | 0=No; 1=Yes; 99=Unknown | Metastatic to lung |
