Appendix 3—table 4. Other covariates used for analysis.
| Other covariate related to cohort selection for analysis | Variable name | Covariate values | Covariate description |
|---|---|---|---|
|
Sex
(recode other/prefer not to say gender -->missing) |
der_sex | Male, Female | |
| Breast cancer | der_Breast | 0=No; 1=Yes | |
|
Cancer type of second malignancy. If the patient has more than two malignancies, please select the second-most recently diagnosed cancer type. If unknown or unclear, please specify in the free text box below |
cancer_type_21 | ‘’ indicates no second malignancy | |
| Region of patient residence with US and ex-US collapsed | der_region_v3 | Non-US; Other; US |